Service manual Caterpillar 326D2 L Excavator with C7.1 Engine | KER00001-UP

Air Conditioning and Heating R134a for All Cat Machines
– General Information
– Refrigerant Orifice Tube System
– Refrigerant Compressor
– Refrigerant Compressor
– Refrigerant Compressor
– Refrigerant Condenser
– Refrigerant Condenser
– Refrigerant Receiver-Dryer
– Refrigerant Receiver-Dryer
– Refrigerant Expansion Valve
– In-line Refrigerant Dryer
– Identifying the Refrigerant
– In-line Refrigerant Dryer
– Refrigerant Orifice Tube Assembly
– Refrigerant Orifice Tube Assembly
– Evaporator Coil
– Refrigerant Accumulator
– Refrigerant Accumulator
– Refrigerant Accumulator
– Refrigerant Compressor Protection System
– Temperature Control
– Temperature Control
– Identifying the Refrigerant
– Pressure Switch (Refrigerant)
– Pressure Switch (Refrigerant)
– Cab Pressurization and Filtration System
– Cab Pressurization and Filtration System
– Cab Pressurization and Filtration System
– Condensate Drainage System
– Condensate Drainage System
– Service Intervals
– Service Intervals
– Glossary of Terms
– Identifying the Air Conditioning System
– General Troubleshooting Information
– General Troubleshooting Information
– Machine Preparation for Testing and Adjusting
– Machine Preparation for Testing and Adjusting
– Air Conditioning Performance – Test
– Refrigerant Leakage – Test
– Manifold Gauge Set (Refrigerant) – Install
– Manifold Gauge Set (Refrigerant) – Install
– Refrigerant Recovery
– Refrigerant Recovery
– Identifying the Air Conditioning System
– Refrigerant System – Flush
– Refrigerant Oil – Test
– Refrigerant Compressor – Test
– Refrigerant Compressor – Test
– Refrigerant Compressor – Test
– Refrigerant System – Evacuate
– Refrigerant System – Evacuate
– Refrigerant System – Charge
– Refrigerant System – Charge
– Manifold Gauge Set (Refrigerant) – Remove
– Identifying the Heating System
– Manifold Gauge Set (Refrigerant) – Remove
– Compressor Protection System – Test
– Compressor Protection System – Test
– Electronic Heat Control – Test
– Electronic Heat Control – Test
– Heater Performance – Test
– Heating and Air Conditioning Service Publications
– General Information
– General Information
– Machine Preparation for Disassembly and Assembly
– Refrigerant Expansion Valve System
– Air Conditioner Lines – Remove and Install
– Refrigerant Compressor – Remove and Install
– Refrigerant Accumulator – Remove and Install
– Refrigerant Expansion Valve – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– In-Line Refrigerant Dryer – Remove and Install
– Refrigerant Orifice Tube Assembly – Remove and Install
– Refrigerant Expansion Valve System
– Refrigerant Orifice Tube System
– General Information
Disassembly and Assembly 326D2, 329D2 and 330D2 Excavators Engine Supplement
– Aftercooler – Remove and Install
– Aftercooler – Remove and Install
– Aftercooler – Remove and Install
– Air Cleaner – Remove and Install
– Air Cleaner – Remove and Install
– Air Cleaner – Remove and Install
– Alternator – Remove and Install
– Alternator – Remove and Install
– Alternator – Remove and Install
– Battery – Remove and Install
– Battery – Remove and Install
– Battery – Remove and Install
– Battery – Remove and Install
– Belt Tensioner – Remove and Install
– Coolant Tank (Expansion) – Remove and Install
– Coolant Tank (Expansion) – Remove and Install
– Coolant Tank (Expansion) – Remove and Install
– Crankshaft Front Seal – Remove and Install
– Crankshaft Front Seal – Remove and Install
– Crankshaft Vibration Damper and Pulley – Remove and Install
– Crankshaft Vibration Damper and Pulley – Remove and Install
– Crankshaft Vibration Damper and Pulley – Remove and Install
– Electric Starting Motor – Remove and Install
– Electric Starting Motor – Remove and Install
– Electric Starting Motor – Remove and Install
– Electric Starting Motor – Remove and Install
– Electronic Control Module – Remove and Install
– Engine – Remove and Install
– Engine – Remove and Install
– Engine – Remove and Install
– Engine Front Mount – Install
– Engine Front Mount – Install
– Engine Front Mount – Install
– Engine Front Mount – Remove
– Engine Front Mount – Remove
– Engine Front Mount – Remove
– Engine Oil Cooler – Remove and Install
– Engine Oil Cooler – Remove and Install
– Engine Oil Cooler – Remove and Install
– Engine Oil Filter and Oil Filter Base – Remove and Install
– Engine Oil Filter and Oil Filter Base – Remove and Install
– Engine Oil Filter and Oil Filter Base – Remove and Install
– Engine Oil Pump – Remove and Install
– Engine Oil Pump – Remove and Install
– Engine Oil Pump – Remove and Install
– Engine Rear Mount – Install
– Engine Rear Mount – Install
– Engine Rear Mount – Install
– Engine Rear Mount – Remove
– Engine Rear Mount – Remove
– Engine Rear Mount – Remove
– Exhaust Manifold – Remove and Install
– Exhaust Manifold – Remove and Install
– Fan – Remove and Install
– Fan – Remove and Install
– Fan – Remove and Install
– Fan – Remove and Install
– Fan Drive – Remove and Install
– Fan Drive – Remove and Install
– Fan Drive – Remove and Install
– Fan Guard – Remove and Install
– Fan Guard – Remove and Install
– Fan Guard – Remove and Install
– Flexible Exhaust Pipe – Remove and Install
– Fuel Cooler – Remove and Install
– Fuel Filter (Secondary) and Fuel Filter Base – Remove and
– Fuel Priming Pump and Fuel Filter Base – Remove and Install
– Fuel Priming Pump and Fuel Filter Base – Remove and Install
– Fuel Priming Pump and Fuel Filter Base – Remove and Install
– Fuel Priming Pump and Fuel Filter Base – Remove and Install
– Hood – Remove and Install
– Hood – Remove and Install
– Muffler – Remove and Install
– Muffler – Remove and Install
– Muffler – Remove and Install
– Muffler – Remove and Install
– Oil Pan – Remove and Install
– Oil Pan – Remove and Install
– Oil Pan – Remove and Install
– Radiator and Hydraulic Oil Cooler – Install
– Radiator and Hydraulic Oil Cooler – Install
– Radiator and Hydraulic Oil Cooler – Install
– Radiator and Hydraulic Oil Cooler – Remove
– Radiator and Hydraulic Oil Cooler – Remove
– Radiator and Hydraulic Oil Cooler – Remove
– Refrigerant Compressor – Remove and Install
– Refrigerant Compressor – Remove and Install
– Refrigerant Compressor – Remove and Install
– Refrigerant Condenser – Remove and Install
– Refrigerant Condenser – Remove and Install
– Refrigerant Condenser – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– System Pressure – Release
– System Pressure – Release
– System Pressure – Release
– Valve Mechanism Cover – Remove and Install
– Water Pump – Remove and Install
– Water Pump – Remove and Install
– Water Pump – Remove and Install
– Water Separator and Fuel Filter (Primary) – Remove and
– Water Separator and Fuel Filter (Primary) – Remove and
– Water Temperature Regulator – Remove and Install
– Water Temperature Regulator – Remove and Install
– Water Temperature Regulator – Remove and Install
Disassembly and Assembly 326D2, 329D2 and 330D2 Excavators Machine Systems
– Accumulator – Remove and Install
– Actuator Motor (Air Distributor) – Remove and Install
– Auxiliary Pilot Valve (Straight Travel) – Assemble
– Auxiliary Pilot Valve (Straight Travel) – Disassemble
– Auxiliary Pilot Valve (Straight Travel) – Disassemble
– Auxiliary Pilot Valve (Straight Travel) – Install
– Auxiliary Pilot Valve (Straight Travel) – Remove
– Blower Motor (Air Conditioner, Heater) – Remove and Install
– Boom – Install
– Boom – Remove
– Boom Bearings and Seals – Remove and Install
– Boom Bearings and Seals – Remove and Install
– Boom Cylinder – Remove and Install
– Bucket – Install
– Bucket – Remove
– Bucket Cylinder – Remove and Install
– Bucket Linkage – Install
– Bucket Linkage – Remove
– Bucket Linkage Bearings and Seals – Install
– Bucket Linkage Bearings and Seals – Remove
– Cab – Install
– Cab – Install
– Cab – Remove
– Cab – Remove
– Check Valve (Cooler Bypass) – Assemble
– Check Valve (Cooler Bypass) – Disassemble
– Check Valve (Cooler Bypass) – Install
– Check Valve (Cooler Bypass) – Install
– Check Valve (Cooler Bypass) – Remove
– Check Valve (Cooler Bypass) – Remove
– Control Manifold (Pilot Oil) – Assemble – Hydraulic Lockout,
– Control Manifold (Pilot Oil) – Disassemble – Hydraulic Lockout,
– Control Manifold (Pilot Oil) – Install
– Control Manifold (Pilot Oil) – Remove
– Control Module (Automatic Temperature Control Unit) –
– Control Module (Automatic Temperature Control Unit) –
– Control Valve (Auxiliary) – Assemble
– Control Valve (Auxiliary) – Disassemble
– Control Valve (Auxiliary) – Install
– Control Valve (Auxiliary) – Remove
– Counterbalance Valve (Travel) – Assemble
– Counterbalance Valve (Travel) – Disassemble
– Counterbalance Valve (Travel) – Disassemble
– Counterbalance Valve (Travel) – Install
– Counterbalance Valve (Travel) – Install
– Counterbalance Valve (Travel) – Remove
– Counterbalance Valve (Travel) – Remove
– Counterweight – Remove and Install
– Counterweight – Remove and Install
– Duo-Cone Conventional Seals – Install
– Evaporator Coil – Install
– Evaporator Coil – Remove
– Final Drive – Assemble
– Final Drive – Assemble
– Final Drive – Assemble
– Final Drive – Assemble
– Final Drive – Disassemble
– Final Drive – Disassemble
– Final Drive – Disassemble
– Final Drive – Disassemble
– Final Drive – Install
– Final Drive – Install
– Final Drive – Remove
– Front Idler and Recoil Spring – Install
– Front Idler and Recoil Spring – Remove
– Front Idler, Recoil Spring and Hydraulic Track Adjuster –
– Front Idler, Recoil Spring and Hydraulic Track Adjuster –
– Fuel Tank – Install
– Fuel Tank – Remove
– Gear Pump (Auxiliary) – Assemble
– Gear Pump (Auxiliary) – Disassemble
– Gear Pump (Auxiliary) – Install
– Gear Pump (Auxiliary) – Remove
– Gear Pump (Pilot) – Assemble
– Gear Pump (Pilot) – Disassemble
– Gear Pump (Pilot) – Install
– Gear Pump (Pilot) – Remove
– Heater Core – Install
– Heater Core – Remove
– Heating and Air Conditioning Unit – Install
– Heating and Air Conditioning Unit – Install
– Heating and Air Conditioning Unit – Remove
– Heating and Air Conditioning Unit – Remove
– Hood – Remove and Install
– Hydraulic Lockout Control – Assemble
– Hydraulic Lockout Control – Disassemble
– Hydraulic Lockout Control – Install
– Hydraulic Lockout Control – Remove
– Hydraulic Oil Cooler – Install
– Hydraulic Oil Cooler – Remove
– Hydraulic Oil Cooler and Radiator – Remove and Install
– Hydraulic System Pressure – Release
– Hydraulic Tank – Install
– Hydraulic Tank – Remove
– Hydraulic Track Adjusters – Assemble
– Hydraulic Track Adjusters – Disassemble
– Hydraulic Track Adjusters – Install
– Hydraulic Track Adjusters – Remove
– Load Control Valve (Boom Cylinder) – Assemble
– Load Control Valve (Boom Cylinder) – Disassemble
– Load Control Valve (Boom Cylinder) – Install
– Load Control Valve (Boom Cylinder) – Remove
– Load Control Valve (Stick Cylinder) – Assemble
– Load Control Valve (Stick Cylinder) – Disassemble
– Load Control Valve (Stick Cylinder) – Install
– Load Control Valve (Stick Cylinder) – Remove
– Main Control Valve – Assemble
– Main Control Valve – Disassemble
– Main Control Valve – Install
– Main Control Valve – Install
– Main Control Valve – Remove
– Main Control Valve – Remove
– Main Hydraulic Pump – Assemble
– Main Hydraulic Pump – Assemble
– Main Hydraulic Pump – Disassemble
– Main Hydraulic Pump – Disassemble
– Main Hydraulic Pump – Install
– Main Hydraulic Pump – Remove
– Main Hydraulic Pump and Pump Drive Coupling – Remove and
– Manual Valve (Auxiliary Shutoff) – Install
– Manual Valve (Auxiliary Shutoff) – Remove
– Oil Filter (Hydraulic, Return) – Install
– Oil Filter (Hydraulic, Return) – Install
– Oil Filter (Hydraulic, Return) – Remove
– Oil Filter (Hydraulic, Return) – Remove
– Operator Console – Remove and Install
– Operator Console – Remove and Install
– Pilot Valve (Joystick) – Assemble
– Pilot Valve (Joystick) – Assemble
– Pilot Valve (Joystick) – Disassemble
– Pilot Valve (Joystick) – Install
– Pilot Valve (Joystick) – Remove
– Pilot Valve (Joystick) – Remove
– Pilot Valve (Travel) – Assemble
– Pilot Valve (Travel) – Disassemble
– Pilot Valve (Travel) – Install
– Pilot Valve (Travel) – Remove
– Pressure Reducing Valve (Implement and Swing Priority) –
– Pressure Reducing Valve (Implement and Swing Priority) –
– Pressure Reducing Valve (Implement and Swing Priority) –
– Pressure Reducing Valve (Implement and Swing Priority) –
– Pressure Switch (Refrigerant Pressure Cutoff) – Remove and
– Recoil Spring – Assemble
– Recoil Spring – Assemble
– Recoil Spring – Disassemble
– Recoil Spring – Disassemble
– Refrigerant Condenser – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– Relief Valve (Auxiliary Circuit) – Assemble
– Relief Valve (Auxiliary Circuit) – Disassemble
– Relief Valve (Auxiliary Circuit) – Install
– Relief Valve (Auxiliary Circuit) – Remove
– Relief Valve (Pilot) – Install
– Relief Valve (Pilot) – Remove
– Seat – Remove and Install
– Seat – Remove and Install
– Seat Support – Remove and Install
– Seat Suspension – Remove and Install
– Selector Valve (Alternate Pattern Control) – Assemble
– Selector Valve (Alternate Pattern Control) – Disassemble
– Selector Valve (Alternate Pattern Control) – Install
– Selector Valve (Alternate Pattern Control) – Remove
– Shuttle Valve – Assemble – Pilot Oil
– Shuttle Valve – Disassemble – Pilot Oil
– Shuttle Valve – Install – Pilot Oil
– Shuttle Valve – Install – Third Pedal Straight Travel
– Shuttle Valve – Remove – Pilot Oil
– Shuttle Valve – Remove – Third Pedal Straight Travel
– Solenoid Valve (Auxiliary Circuit) – Assemble – 1-Way/2-Way,
– Solenoid Valve (Auxiliary Circuit) – Assemble – One-Way
– Solenoid Valve (Auxiliary Circuit) – Disassemble – 1-Way/2-
– Solenoid Valve (Auxiliary Circuit) – Disassemble – One-Way
– Solenoid Valve (Auxiliary Circuit) – Install – 1-Way/2-Way,
– Solenoid Valve (Auxiliary Circuit) – Install – One-Way Check
– Solenoid Valve (Auxiliary Circuit) – Remove – 1-Way/2-Way,
– Solenoid Valve (Auxiliary Circuit) – Remove – One-Way Check
– Solenoid Valve (Negative Flow Control, Proportional Reducing
– Solenoid Valve (Negative Flow Control, Proportional Reducing
– Solenoid Valve (Negative Flow Control, Proportional Reducing
– Solenoid Valve (Negative Flow Control, Proportional Reducing
– Solenoid Valve (Negative Flow Control, Proportional Reducing
– Solenoid Valve (Negative Flow Control, Proportional Reducing
– Solenoid Valve (Rotate) – Assemble
– Solenoid Valve (Rotate) – Disassemble
– Solenoid Valve (Rotate) – Install
– Solenoid Valve (Rotate) – Remove
– Sprocket – Remove and Install
– Stick – Install
– Stick – Remove
– Stick Bearings and Seals – Install
– Stick Bearings and Seals – Install
– Stick Bearings and Seals – Remove
– Stick Bearings and Seals – Remove
– Stick Cylinder – Remove and Install
– Stick Cylinder – Remove and Install
– Storage Box and Covers (Cab) – Remove and Install
– Swing Cushion Valve – Assemble – Fine Swing Solenoid
– Swing Cushion Valve – Assemble – Fine Swing Solenoid
– Swing Cushion Valve – Disassemble – Fine Swing Solenoid
– Swing Cushion Valve – Install
– Swing Cushion Valve – Remove
– Swing Drive – Assemble
– Swing Drive – Assemble
– Swing Drive – Assemble
– Swing Drive – Disassemble
– Swing Drive – Disassemble
– Swing Drive – Disassemble
– Swing Drive – Install
– Swing Drive – Remove
– Swing Gear and Bearing – Install
– Swing Gear and Bearing – Install
– Swing Gear and Bearing – Install
– Swing Gear and Bearing – Install
– Swing Gear and Bearing – Remove
– Swing Motor – Assemble
– Swing Motor – Assemble
– Swing Motor – Disassemble
– Swing Motor – Disassemble
– Swing Motor – Install
– Swing Motor – Install
– Swing Motor – Remove
– Swing Motor – Remove
– Swivel – Assemble
– Swivel – Disassemble
– Swivel – Disassemble
– Swivel – Install
– Swivel – Remove
– Track – Connect
– Track – Connect – Press Fit Master Pin
– Track – Separate
– Track – Separate – Press Fit Master Pin
– Track Carrier Roller – Install
– Track Carrier Roller – Install
– Track Carrier Roller – Remove
– Track Carrier Roller – Remove
– Track Roller – Install
– Track Roller – Install
– Track Roller – Remove
– Track Roller – Remove
– Travel Motor – Assemble
– Travel Motor – Assemble
– Travel Motor – Assemble
– Travel Motor – Disassemble
– Travel Motor – Disassemble
– Travel Motor – Disassemble
– Travel Motor – Install
– Travel Motor – Install
– Travel Motor – Remove
– Travel Motor – Remove
– Upper Frame and Undercarriage Frame – Connect
– Upper Frame and Undercarriage Frame – Connect
– Upper Frame and Undercarriage Frame – Connect
– Upper Frame and Undercarriage Frame – Separate
– Upper Frame and Undercarriage Frame – Separate
– Upper Frame and Undercarriage Frame – Separate
– Window Wiper Motor – Remove and Install – Lower
– Window Wiper Motor – Remove and Install – Upper
Disassembly and Assembly C7.1 Engines
– Accessory Drive – Remove and Install – Accessory Drive SAE
– Accessory Drive – Remove and Install – Accessory Drive SAE
– Accessory Drive – Remove and Install – Accessory Drive SAE “A” –
– Air Compressor – Remove and Install – Single Cylinder Air
– Air Compressor – Remove and Install – Twin Cylinder Air
– Alternator – Install
– Alternator – Remove
– Alternator Belt – Remove and Install
– Bearing Clearance – Check
– Belt Tensioner – Remove and Install
– Boost Pressure Sensor – Remove and Install
– Camshaft – Remove and Install
– Camshaft Bearings – Remove and Install
– Camshaft Gear – Remove and Install
– Camshaft Position Sensor – Remove and Install
– Connecting Rod Bearings – Install – Connecting rods in position
– Connecting Rod Bearings – Remove – Connecting rods in
– Coolant Temperature Sensor – Remove and Install
– Crankcase Breather – Install – Filtered Breather
– Crankcase Breather – Install – Unfiltered Breather
– Crankcase Breather – Remove – Filtered Breather
– Crankcase Breather – Remove – Unfiltered Breather
– Crankshaft – Install
– Crankshaft – Remove
– Crankshaft Front Seal – Remove and Install
– Crankshaft Front Seal – Remove and Install – Crankshaft Front
– Crankshaft Gear – Remove and Install
– Crankshaft Main Bearings – Remove and Install – Crankshaft
– Crankshaft Position Sensor – Remove and Install
– Crankshaft Rear Seal – Install
– Crankshaft Rear Seal – Remove
– Crankshaft Timing Ring – Remove and Install
– Cylinder Head – Install
– Cylinder Head – Remove
– ECM Mounting Bracket – Remove and Install
– Electric Starting Motor – Remove and Install
– Electronic Control Module – Remove and Install
– Electronic Unit Injector – Install
– Electronic Unit Injector – Remove
– Engine Oil Cooler – Install – Engine Oil Cooler with a High
– Engine Oil Cooler – Install – Engine Oil Cooler with a Low
– Engine Oil Cooler – Remove – Engine Oil Cooler with a High
– Engine Oil Cooler – Remove – Engine Oil Cooler with a Low
– Engine Oil Filter Base – Remove and Install
– Engine Oil Pan – Install – Aluminum Oil Pan
– Engine Oil Pan – Remove – Aluminum Oil Pan
– Engine Oil Pressure Sensor – Remove and Install
– Engine Oil Pump – Install
– Engine Oil Pump – Remove
– Exhaust Elbow – Remove and Install
– Exhaust Manifold – Remove and Install – Side Mounted Exhaust
– Exhaust Manifold – Remove and Install – Top Mounted Exhaust
– Fan – Remove and Install
– Fan Drive – Remove and Install
– Flow Control Valve – Remove and Install
– Flywheel – Install
– Flywheel – Install – Equipped with Rear Power Take-Off
– Flywheel – Remove
– Flywheel – Remove – Equipped with Rear Power Take-Off
– Flywheel Housing – Remove and Install – Flywheel Housing that is
– Flywheel Housing – Remove and Install – Standard Housing
– Flywheel Housing – Remove and Install – Type A and Type B
– Front Cover – Remove and Install
– Front Cover – Remove and Install – Heavy Duty Front Cover
– Fuel Filter Base – Remove and Install
– Fuel Injection Lines – Install
– Fuel Injection Lines – Remove
– Fuel Injection Pump – Install
– Fuel Injection Pump – Remove
– Fuel Injection Pump Gear – Install
– Fuel Injection Pump Gear – Remove
– Fuel Manifold (Rail) – Remove and Install
– Fuel Pressure Sensor – Remove and Install
– Fuel Priming Pump – Remove and Install – Electric Fuel Lift
– Fuel Priming Pump – Remove and Install – Mechanical Priming
– Gear Group (Front) – Remove and Install
– Gear Group (Front) – Remove and Install – Heavy Duty Gear
– Glow Plugs – Remove and Install
– Housing (Front) – Install
– Housing (Front) – Install – Heavy Duty Housing (Front)
– Housing (Front) – Remove
– Housing (Front) – Remove – Heavy Duty Housing (Front)
– Idler Gear – Install
– Idler Gear – Remove
– Idler Pulley – Remove and Install – Flat Idler Pulley
– Idler Pulley – Remove and Install – Grooved Idler Pulley
– Inlet Air Temperature Sensor – Remove and Install
– Inlet and Exhaust Valve Springs – Remove and Install
– Inlet and Exhaust Valves – Remove and Install
– Inlet Manifold – Remove and Install
– Lifter Group – Remove and Install
– Piston Cooling Jets – Remove and Install
– Pistons and Connecting Rods – Assemble
– Pistons and Connecting Rods – Disassemble
– Pistons and Connecting Rods – Install
– Pistons and Connecting Rods – Remove
– Rear Power Take-Off (RPTO) – Install
– Rear Power Take-Off (RPTO) – Remove
– Refrigerant Compressor – Remove and Install
– Relief Valve (Fuel) – Remove and Install
– Rocker Shaft – Assemble
– Rocker Shaft – Disassemble
– Rocker Shaft and Pushrod – Install
– Rocker Shaft and Pushrod – Remove
– Turbocharger – Install – Turbocharger for Side Mounted
– Turbocharger – Install – Turbocharger for Top Mounted
– Turbocharger – Remove – Turbocharger for Side Mounted
– Turbocharger – Remove – Turbocharger for Top Mounted
– Valve Mechanism Cover – Remove and Install
– Valve Mechanism Cover Base – Remove and Install
– Vibration Damper and Pulley – Install
– Vibration Damper and Pulley – Remove
– Wastegate Solenoid – Remove and Install
– Water Pump – Install
– Water Pump – Remove
– Water Separator and Fuel Filter (Primary) – Remove and
– Water Temperature Regulator – Remove and Install
E Series Excavator Monitoring System
– Prestart Monitoring Function – If Equipped
– Power Mode Setting Menu
– Maintenance Intervals Menu
– Work Tool Select Menu
– Current Totals Menu
– Engine Shutdown Setting Menu
– Password Change Menu
– Service Menu
– ECM Summary Menu
– Diagnostic Menu
– Status Menu
– Warning Operation
– Configuration Menu
– Tool Programming Menu
– Override Parameters Menu
– Calibration Menu
– Device Test Menu
– WinFlash Menu
– System Schematic
– Password Entry
– Input Components
– Data Link
– Menu Outline
– Display Setting Menu
– Language Select Menu
– Performance Menu
– General Information
Schematic Caterpillar 326D2 Excavator Hydraulic System
– Features
– Cover Page
– Information
– Component Location
– Tap Location
– Schematic
– Machine Views
– Cab – Top View
– Machine – Right Rear View
– Main Valve – Front View
– Main Valve – Rear View
– Pump – Right Side View
Schematic Caterpillar 326D2 Excavator Hydraulic System
– Features
– Cover Page
– Information
– Component Location
– Tap Location
– Schematic
– Machine Views
– Cab – Top View
– Machine – Right Rear View
– Main Valve – Front View
– Main Valve – Rear View
– Pump – Right Side View
Schematic Caterpillar 326D2 and 330D2 Excavator Electrical System
– Feature
– Cover Page
– Information
– Component Location
– Volume 1 of 2 – Machine
– Volume 2 of 2 – Engine Wiring
– Connector Location
– Volume 1 of 2 – Machine
– Volume 2 of 2 – Engine Wiring
– Schematics
– Volume 1 of 2 – Machine
– Volume 2 of 2 – Engine Wiring
– Machine Views
– Volume 1 of 2 – Machine
– Battery Compartment Top View
– Cab Bottom
– Cab Left Side
– Cab Right Side
– Cab Top Side
– Camera View
– Engine Front
– Fan View
– Front Right corner
– Machine Left Rear
– Machine Pump Room
– Machine Rear View
– Machine Right Rear
– Machine Top View
– Volume 2 of 2 – Engine Wiring
– Chassis
– Engine Rear
– Engine Top
Schematic Caterpillar Air Conditioning Electrical System
Specifications 326D2 Excavator Machine Systems
– Accumulator (Pilot)
– Accumulator (Pilot)
– Air Cleaner – Precleaner
– Air Conditioner and Mounting
– Air Conditioner Lines
– Auxiliary Hydraulic Lines
– Auxiliary Hydraulic Lines – Coupler Lines for Reach Boom
– Boom – 10.2 m (33.46 ft)
– Boom – 5.9 m (19.36 ft)
– Boom Cylinder
– Boom Cylinder Lines
– Boom Cylinder Lines
– Boom Lines
– Boom Lines
– Bucket – Side Bar Protector
– Bucket Adjuster
– Bucket Adjuster
– Bucket Cylinder
– Bucket Cylinder
– Bucket Cylinder Lines
– Bucket Cylinder Lines
– Bucket Cylinder Lines
– Bucket Cylinder Lines
– Bucket Linkage
– Bucket Linkage – CB1 Family
– Bucket Sidecutter
– Cab
– Cab
– Cab
– Cab
– Cab Lighting
– Cab Lighting
– Chassis Lighting
– Check Valve (Return Lines)
– Check Valve (Stick Drift Reduction)
– Control Lines – Rear
– Control Manifold (Pilot Oil)
– Control Manifold (Pilot Oil)
– Control Valve (Auxiliary)
– Control Valve (Auxiliary)
– Counterweight
– Coupler Cylinder
– Cutting Edge
– Engine Mounting
– Ether Starting Aid
– Ether Starting Aid
– Fasteners – Swing Drive and Final Drive
– Final Drive
– Final Drive – Without Motor
– Flood Lighting
– Front Idler
– Front Lines
– Front Lines
– Front Lines – Boom Cylinder
– Front Lines – Control Valve
– Fuel Filter Mounting
– Fuel Lines
– Fuel Tank
– Fuel Tank Mounting
– Grease Lines
– Grease Lines
– Grease Lines – Stick
– Handle Control (Travel)
– Hood
– Hydraulic Oil Cooler Lines Group
– Hydraulic Pedal Control (Auxiliary)
– Hydraulic Tank and Filter
– Hydraulic Tank and Filter
– Hydraulic Tank Mounting
– Joystick Control
– Main Control Valve
– Main Hydraulic Pump
– Operator Console
– Operator Monitor – Mounting
– Pilot Lines
– Pilot Lines
– Pilot Lines
– Pilot Lines – Joystick and Pedals
– Pilot Lines – Travel
– Pilot Oil Filter and Relief Valve
– Pilot Valve (Auxiliary)
– Pilot Valve (Boom Drift Reduction)
– Pilot Valve (Joystick)
– Pressure Reducing Valve (Boom Priority)
– Pressure Sensor – BOOM DOWN
– Pump Control Valve
– Pump Coupling – Auxiliary Pump
– Pump Head (Main)
– Rear View Mirror
– Rear View Mirror
– Recoil Spring
– Refrigerant Compressor
– Refrigerant Compressor
– Refrigerant Condenser and Mounting
– Relief Valve (Main)
– Relief Valve (Negative Flow Control) – Auxiliary, Combined
– Relief Valve (Pilot) – Front Lines
– Relief Valve (Swing Pressure)
– Return Lines
– Rollover Protective Structure (ROPS) Mounting
– Seat Belt
– Seat Mounting
– Selector Valve (Control Pattern Change)
– Shuttle Valve (Pilot Lines)
– Shuttle Valve (Pilot Lines)
– Solenoid Valve (Quick Coupler)
– Solenoid Valve (Quick Coupler)
– Solenoid Valve (Swing Motor)
– Sprocket
– Stick – 2.5 m (8.20 ft)
– Stick – 3 m (9.8 ft)
– Stick – 7.9 m (25.92 ft)
– Stick Cylinder
– Stick Cylinder
– Stick Cylinder Lines
– Stick Cylinder Lines
– Stick Cylinder Lines – Long Reach
– Stick Lines
– Stick Lines – Coupler Lines Group
– Stick Lines – Long Reach
– Suction Fan
– Swing Cushion Valve
– Swing Drive
– Swing Drive – Without Motor
– Swing Drive Mounting
– Swing Drive Mounting
– Swing Gear and Bearing
– Swing Motor
– Swing Motor
– Swivel
– Track
– Track
– Track
– Track Adjuster
– Track Carrier Roller
– Track Roller (Single Flange)
– Track Roller (Single Flange)
– Track Roller Mounting
– Track Roller Mounting
– Transport Lock
– Travel Counterbalance Valve
– Travel Counterbalance Valve
– Travel Motor
– Travel Motor
– Travel Motor and Mounting
– Travel Motor Guard
– Travel Motor Lines
– Upper Frame
– Wiring (Battery)
– Wiring (Battery)
– Wiring (Fine Swing)
Specifications C7.1 Engines for Caterpillar Built Machines
– Alternator
– Belt Tensioner
– Boost Pressure Sensor
– Camshaft
– Camshaft Bearings
– Connecting Rod
– Connecting Rod Bearing Journal
– Coolant Temperature Sensor
– Crankcase Breather
– Crankshaft
– Crankshaft Seals
– Cylinder Block
– Cylinder Head
– Cylinder Head Valves
– Electronic Control Module
– Engine Design
– Engine Lifting Bracket
– Engine Oil Cooler
– Engine Oil Filter Base
– Engine Oil Pan
– Engine Oil Pressure
– Engine Oil Pressure Sensor
– Engine Oil Pump
– Exhaust Manifold
– Fan Drive
– Flywheel
– Flywheel Housing
– Front Housing and Covers
– Fuel Filter Base – Twin Secondary Fuel Filter Base
– Fuel Injection Lines
– Fuel Injection Nozzles
– Fuel Injection Pump
– Fuel Manifold (Rail)
– Fuel Priming Pump – Electric Fuel Priming Pump
– Gear Group (Front)
– Glow Plugs
– Inlet Manifold
– Inlet Manifold Temperature Sensor
– Lifter Group
– Main Bearing Journal
– Piston and Rings
– Piston Cooling Jet
– Refrigerant Compressor
– Rocker Shaft
– Speed/Timing Sensor
– Starter Motor
– Turbocharger
– Valve Mechanism Cover
– Vibration Damper and Pulley
– Water Pump
– Water Temperature Regulator and Housing
Systems Operation & Testing and Adjusting 320D2, 323D2, 326D2, 329D2 and 330D2 Excavators Tool Control System
– Control (Pedal) – Calibrate
– Control (Thumb Wheel) – Calibrate
– General Information
– Machine Electronic Control Module (Engine and Hydraulic)
– Machine Electronic Control Module (Engine and Hydraulic)
– Medium Pressure Hydraulic System
– Medium Pressure Hydraulic System
– Medium Pressure: Default Value of Work Tool Parameters
– Medium Pressure: Relief Valve (Main) – Test and Adjust
– Monitor Overview
– Monitor Overview
– Process for Setting Up the Work Tool
– Relays
– Senders
– Sensors
– Sensors
– Service Mode – Enter
– Service Mode – Enter
– Service Tools
– Solenoid Valve (Proportional Reducing) – Calibrate – Attachment
– Solenoid Valve (Proportional Reducing) – Calibrate – Negative
– Solenoid Valve (Proportional Reducing) – Calibrate – Negative
– Solenoid Valve (Proportional Reducing) – Calibrate – Negative
– Solenoid Valve (Proportional Reducing) – Calibrate – Number 1
– Solenoid Valves
– Switches
– Switches
– System 11: Combined Function
– System 11: Default Value of Work Tool Parameters
– System 11: Relief Valve (Line) – Test and Adjust – Line Relief
– System 11: Relief Valve (Line) – Test and Adjust – Line Relief
– System 18: Combined Function
– System 18: Combined Function
– System 18: Default Value of Work Tool Parameters
– System 18: Relief Valve (Line) – Test and Adjust – Auxiliary
– System 2: Combined Function
– System 2: Combined Function
– System 2: Default Value of Work Tool Parameters
– System 2: Default Value of Work Tool Parameters
– System 2: Relief Valve (Line) – Test and Adjust – Line Relief Valves
– System 2: Relief Valve (Line) – Test and Adjust – Line Relief Valves
– System 2: Relief Valve (Line) – Test and Adjust – Line Relief Valves
– System 3 Prime: Default Value of Work Tool Parameters
– System 3 Prime: Default Value of Work Tool Parameters
– System 3 Prime: Default Value of Work Tool Parameters
– System 3 Prime: One-Way/Two Pump – One-Way/Two Pump,
– System 3 Prime: One-Way/Two Pump – One-Way/Two Pump,
– System 3 Prime: One-Way/Two Pump – One-Way/Two Pump,
– System 3 Prime: Relief Valve (Line) – Test and Adjust – Auxiliary
– System 3 Prime: Relief Valve (Line) – Test and Adjust – Auxiliary
– System 3 Prime: Relief Valve (Line) – Test and Adjust – Tool Relief
– System 3 Prime: Relief Valve (Line) – Test and Adjust – Tool Relief
– System Identification
– Work Tool – Select
– Work Tool Parameter – Program
Systems Operation & Testing and Adjusting C7.1 Engines for Caterpillar Built Machines
– Air in Fuel – Test
– Air Inlet and Exhaust System
– Air Inlet and Exhaust System – Inspect
– Alternator – Test
– Basic Engine
– Battery – Test
– Charging System – Test
– Cleanliness of Fuel System Components
– Compression – Test
– Connecting Rod – Inspect
– Cooling System
– Cooling System – Check
– Cooling System – Inspect
– Cooling System – Test
– Cylinder Block – Inspect
– Cylinder Head – Inspect
– Electric Starting System – Test
– Electrical System
– Electronic Control System
– Engine Oil Cooler – Inspect
– Engine Oil Pressure – Test
– Engine Oil Pump – Inspect
– Engine Valve Lash – Inspect/Adjust
– Excessive Bearing Wear – Inspect
– Excessive Engine Oil Consumption – Inspect
– Finding Top Center Position for No. 1 Piston
– Flywheel – Inspect
– Flywheel Housing – Inspect
– Fuel Injection
– Fuel Injection – Engines with a Primary and Secondary Fuel
– Fuel Injection Timing – Check
– Fuel Quality – Test
– Fuel System – Inspect
– Fuel System – Prime
– Gear Group (Front) – Time
– Gear Group – Inspect
– Glossary of Electronic Control Terms
– Increased Engine Oil Temperature – Inspect
– Introduction
– Lubrication System
– Piston Height – Inspect
– Piston Ring Groove – Inspect
– Power Sources
– Turbocharger – Inspect
– V-Belt – Test
– Valve Depth – Inspect
– Valve Guide – Inspect
– Vibration Damper – Check
– Water Pump – Inspect
– Water Temperature Regulator – Test
Systems Operation 326D2 and 330D2 Excavator Machine System
– Accumulator (Pilot)
– Boom Drift Reduction Valve
– Boom Hydraulic System
– Bucket Hydraulic System
– Bypass Valve (Return) – Bypass Check Valve
– Check Valve (Load)
– Check Valve (Return Makeup) – Slow Return Check Valve
– Control Valve (Boom Lowering)
– Control Valve (Stick Lowering)
– Control Valve (Straight Travel)
– Cylinders (Boom, Stick and Bucket)
– Displacement Change Valve
– Electrical Input Components
– Electrical Output Components
– Electronic Control Module
– Engine Control
– Final Drive
– Gear Pump (Pilot)
– General Information
– Graphic Color Codes
– Hydraulic Filter (Pilot)
– Hydraulic Oil Cooler
– Hydraulic Tank and Filter
– Main Control Valve
– Main Electrical System
– Main Hydraulic Pump
– Main Hydraulic System
– Negative Flow Control System
– Oil Filter (Return) – Case Drain Filter
– Oil Makeup (Swing System)
– Oil Makeup (Travel System)
– Oil Makeup (Travel System)
– Pilot Hydraulic System
– Pilot Valve (Joystick)
– Pilot Valve (Swing Parking Brake)
– Pilot Valve (Travel)
– Pump Control (Main Hydraulic) – Main Pump Regulator
– Related Components
– Relief Valve (Cushion Crossover) – Anti-Reaction Valves
– Relief Valve (Line)
– Relief Valve (Main)
– Relief Valve (Main) – Heavy Lift
– Relief Valve (Pilot)
– Relief Valve (Swing)
– Return Hydraulic System
– Solenoid Valve (Fine Swing) – If Equipped
– Solenoid Valve (Hydraulic Lockout)
– Solenoid Valve (Proportional Reducing) – Power Shift System
– Stick Drift Reduction Valve
– Stick Hydraulic System
– Swing Drive
– Swing Hydraulic System
– Swing Motor
– Swivel
– Travel Counterbalance Valve
– Travel Counterbalance Valve
– Travel Hydraulic System
– Travel Hydraulic System
– Travel Motor
– Travel Motor
– Travel Parking Brake
– Travel Parking Brake
Systems Operation, Testing and Adjusting Air Conditioning and Heating
– Air Conditioning System
– Evaporator Coil
– Blower Motor
– Actuator (Air Conditioner Control)
– Air Conditioning and Heating System Sensor Operation
– Control Panel (Air Conditioner and Heater)
– Control Module
– Speed Control
– Heater Core (Cab)
– Machine Preparation for Troubleshooting
– General Troubleshooting Information
– Air Conditioning System
– Visual Inspection
– Troubleshooting Faults With Service Codes
– Air Conditioning E11 – Recirculation Sensor (Open Circuit)
– Air Conditioning E12 – Recirculation Sensor (Short Circuit)
– Air Conditioning E13 – Fresh Air Sensor (Open Circuit)
– Air Conditioning E14 – Fresh Air Sensor (Short Circuit)
– Air Conditioning E15 – Water Temperature Sensor (Open
– Air Conditioning E16 – Water Temperature Sensor (Short
– Air Conditioning E21 – Evaporator Sensor (Open Circuit)
– Air Conditioning E22 – Evaporator Sensor (Short Circuit)
– Refrigerant Compressor
– Air Conditioning E43 – Damper (Air Outlet)
– Air Conditioning E44 – Damper Error
– Air Conditioning System Troubleshooting
– Air Conditioning System Troubleshooting
– Heating System Troubleshooting
– Required Tools
– Refrigerant Recovery
– Manifold Gauge Set (Refrigerant) – Install
– Refrigerant System – Evacuate
– Refrigerant System – Flush
– Refrigerant Compressor
– Refrigerant Leakage – Test
– Refrigerant Compressor Oil – Check
– Refrigerant System – Charge
– Manifold Gauge Set (Refrigerant) – Remove
– Refrigerant Condenser
– Refrigerant Condenser
– Refrigerant Receiver-Dryer
– Pressure Switch (Refrigerant Pressure Cutoff)
– Refrigerant Expansion Valve
– General Information
Testing and Adjusting 326D2 Excavator Machine Systems
– Accumulator (Pilot) – Test and Charge
– Cylinder Drift – Check – Empty Bucket
– Cylinder Drift – Check – Loaded Bucket
– Cylinder Speed – Check
– Engine Performance – Test – Engine Speed
– Gear Pump (Pilot) – Test
– General Testing and Adjusting Information
– Machine Drift on a Slope – Check
– Main Hydraulic Pump Air – Purge
– Main Pump (Flow) – Test – Constant Horsepower Flow Control
– Main Pump (Flow) – Test – Hydraulic Power
– Operational Checks
– Overload Warning – Set – If Equipped
– Power Shift Pressure – Check
– Pump Control (Negative Flow) – Adjust
– Pump Control (Negative Flow) – Test
– Pump Control (Output Flow) – Adjust
– Relief Valve (Crossover) – Test and Adjust
– Relief Valve (Crossover) – Test and Adjust
– Relief Valve (Line) – Test and Adjust
– Relief Valve (Main) – Test and Adjust
– Relief Valve (Pilot) – Test and Adjust
– Relief Valve (Swing) – Test and Adjust
– Solenoid Valve (Proportional Reducing) – Calibrate – Power
– Specifications
– Specifications
– Swing Bearing Movement – Measure
– Swing Motor – Test – Measurement of Case Drain Oil
– Swing Speed and Overswing on Level Ground – Check
– Swing Speed and Swing Drift on a Slope – Check
– System Pressure – Release
– Travel Motor – Test – Measurement of Case Drain Oil
– Travel Motor – Test – Measurement of Case Drain Oil
– Travel on Level Ground – Test
– Travel on Level Ground – Test – Optional Test
– Visual Inspection
Troubleshooting 323D2, 326D2 and 330D2 Excavators and 330D2 MHPU Machine Electronic Control System
– Alarm – Test
– CAN Data Link – Test
– Connector Contact Description
– Connector Locations
– Determining Diagnostic Trouble Codes
– Diagnostic Capabilities
– Diagnostic Trouble Codes
– ECM – Configure
– ECM – Replace
– ECM Software – Install
– Electrical Connector – Inspect
– Emerging Symptom Information
– Engine Speed Control – Test
– Event Codes
– General Information
– Relay – Test
– Sensor Signal (Analog, Active) – Test
– Sensor Signal (Analog, Passive) – Test
– Sensor Signal (PWM) – Test
– Sensor Supply – Test
– Service Tools
– Solenoid Valve (Switch Controlled) – Test
– Solenoid Valve – Test
– Switch Circuits – Test
– Symptom Troubleshooting
– System Schematic
– Window Wiper Delay – Test
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
Troubleshooting C4.4 and C7.1 Engines
– Welding Precaution
– Diagnostic Trouble Codes
– Customer Passwords
– Factory Passwords
– ECM Will Not Accept Factory Passwords
– Electronic Service Tool Does Not Communicate
– Test ECM Mode
– ECM Software – Install
– ECM – Replace
– Electrical Connectors – Inspect
– Cooling Fan – Calibrate – If Applicable
– Event Codes
– Acceleration Is Poor or Throttle Response Is Poor
– Alternator Problem – Charging Problem and/or Noisy
– Battery Problem
– Belt Tensioner Noise
– Coolant Contains Oil
– Coolant Level Is Low
– Coolant Temperature Is High
– Coolant Temperature Is Low
– Electronic Service Tools
– Cylinder Is Noisy
– Engine Cranks but Does Not Start
– Engine Does Not Crank
– Engine Has Early Wear
– Engine Has Mechanical Noise (Knock)
– Engine Misfires, Runs Rough or Is Unstable
– Engine Overcrank Occurrence
– Engine Overspeeds
– Engine Shutdown Occurrence
– Engine Shutdown Occurs Intermittently
– Service Information Report
– Engine Stalls at Low RPM
– Engine Top Speed Is Not Obtained
– Engine Vibration Is Excessive
– Exhaust Has Excessive Black Smoke
– Exhaust Has Excessive White Smoke
– Exhaust Has Excessive White Smoke
– Exhaust System Contains Coolant
– Exhaust System Contains Oil
– Fuel Consumption Is Excessive
– Fuel Contains Water
– System Overview
– Fuel Filter Is Restricted
– Fuel Pressure Is Low
– Fuel Pressure Problem
– Fuel Rail Pressure Problem
– Inlet Air Is Restricted
– Intake Manifold Air Pressure Is High
– Intake Manifold Air Pressure Is Low
– Intake Manifold Air Temperature Is High
– Oil Consumption Is Excessive
– Oil Contains Coolant
– Component Location
– Oil Contains Fuel
– Oil Pressure Is Low
– Oil Pressure Is Low
– Power Is Intermittently Low or Power Cutout Is Intermittent
– Valve Lash Is Excessive
– CAN Data Link – Test
– CAN Data Link – Test
– Cooling Fan Control – Test – Hydraulic Driven Fan
– Cooling Fan Control – Test
– Cooling Fan Reversing – Test
– Engine Monitoring System
– Data Link – Test
– Data Link – Test
– Data Link Configuration Status – Test
– Electrical Power Supply – Test
– Electrical Power Supply – Test
– Ether Starting Aid – Test
– Glow Plug Starting Aid – Test
– Glow Plug Starting Aid – Test
– Idle Validation – Test
– Idle Validation – Test
– Diagnostic Capabilities
– Injector Solenoid – Test
– Injector Solenoid – Test
– Mode Selection – Test
– Mode Selection – Test
– Power Take-Off – Test
– Relay – Test – Start Relay
– Relay – Test – Electric Fuel Lift Pump Relay
– Relay – Test – ECM Power Relay
– Relay – Test – ECM Power Relay
– Sensor Calibration Required – Test
– Electrical Connectors
– Sensor Signal (Analog, Active) – Test
– Sensor Signal (Analog, Active) – Test
– Sensor Signal (Analog, Passive) – Test
– Sensor Signal (Analog, Passive) – Test
– Sensor Supply – Test
– Sensor Supply – Test
– Shutdown – Test
– Solenoid Valve – Test
– Solenoid Valve – Test
– Speed Control – Test – Analog
– Configuration Parameters
– Speed Control – Test – Analog
– Speed Control – Test – PWM
– Speed/Timing – Test
– Speed/Timing – Test
– Switch Circuits – Test – Multiposition Throttle Switch
– Switch Circuits – Test
– Throttle Lock – Test
– Water in Fuel – Test
– Service Tool Features
– Service Tool Error Identifiers
– General Information