Service manual Caterpillar 950 GC Wheel Loader with C7.1 Engine | M5K00001-UP

950 GC Wheel Loader 5 Gauge Cluster
– Alarm – Test
– CAN Data Link – Test
– Cat Data Link – Test
– Charging System – Test
– Condition Switch (Two Wire) – Test
– Connector Contact Description
– Connector Locations
– Data Link
– Determining Diagnostic Trouble Codes
– Diagnostic Capabilities
– Diagnostic Trouble Codes
– Display Module
– Electrical Connector – Inspect
– Electrical Power Supply – Test
– Emerging Symptom Information
– Event Codes
– General Information
– General Information
– Input Components
– Modes of Operation
– Modes of Operation
– Module – Flash Program
– Module – Replace
– Monitoring System
– Operator Control Switch (Switch to Battery) – Test
– Output Components
– Self Test
– Sensor Signal (Analog, Passive) – Test
– Service Tools
– Symptom Troubleshooting
– System Schematic
– Warning Operation
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
950 GC Wheel Loader Braking and Hydraulic Fan System
– Brake Accumulator
– Brake Accumulator – Test and Charge
– Brake and Hydraulic Fan System Troubleshooting
– Brake Control Valve (Parking)
– Brake Control Valve (Service)
– Brake System Air – Purge
– Control Manifold (Brake, Hydraulic Fan) – Accumulator
– Control Manifold (Charging Valve for the Brake
– Gear Motor (Hydraulic Fan)
– Gear Pump (Brake, Hydraulic Fan)
– General Information (Brake, Hydraulic Fan System)
– Hydraulic Fan Speed – Test and Adjust
– Hydraulic Fan System
– Hydraulic Oil Contamination – Test
– Limit Switch (Stop Light) – Adjust
– Machine Preparation for Troubleshooting
– Monitoring System (Brake Functions)
– Oil Coolers and Cooling System Operation
– Parking Brake
– Parking Brake – Manual Release
– Parking Brake – Test
– Parking Brake Actuator – Adjust
– Position Sensor (Left Brake Pedal)
– Pressure Tap Locations
– Rocker Switch (Transmission Neutralizer Override Control)
– Service Brake System Pressure – Test
– Service Brake Wear (Existing Brake Disc) – Check
– Service Brakes
– Service Brakes – Test
– System Pressure – Release
– Visual Inspection
950 GC Wheel Loader Electrohydraulic System
– Charging System – Test
– Determining Diagnostic Trouble Codes
– Electrical Connector – Inspect
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Replace
– Emerging Symptom Information
– Glossary of Electrical Terms
– Hydraulic Oil Contamination – Test
– Hydraulic System Troubleshooting
– Implement Cycle Time – Check
– Lift and Tilt Cylinder Drift – Check
– Machine Preparation for Troubleshooting
– Pilot Oil Accumulator (Dead Engine, Lift Arm Lower) – Test
– Pilot Pressure to the Main Control Valve – Check
– Piston Pump (Implement) Margin Pressure – Test and Adjust
– Pressure Tap Locations
– Relief Valve (Line) – Test and Adjust
– Relief Valve (Load Sensing Signal) – Test and Adjust
– Ride Control Accumulator – Test and Charge
– System Pressure – Release
– Visual Inspection
950 GC Wheel Loader Power Train Electrohydraulic Control
– Axle Housing and Bearing Preload – Adjust
– Backup Alarm Always Off
– Backup Alarm Always On
– Charging System – Test
– Condition Switch (Two Wire) – Test
– Connector Locations
– Data Link – Test
– Determining Diagnostic Trouble Codes
– Diagnostic Capabilities
– Diagnostic Trouble Codes
– Differential and Final Drive Troubleshooting
– Differential Backlash and Bearings – Adjust
– Electrical Connector – Inspect
– Electrical Power Supply – Test
– Electronic Control Module (ECM) – Configure
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Replace
– Emerging Symptom Information
– Event Codes
– Forward High Speed Lockout – Program
– General Information
– Glossary of Electrical Terms
– Limited Slip Differential Disc End Play – Check
– Machine Preparation for Troubleshooting
– Operator Control Switch (Switch to Ground) – Test
– Output Transfer Gears – Adjust
– Relay – Test
– Reverse High Speed Lockout – Program
– Ride Control Configuration – Program
– Secondary Steering – Program
– Sensor Signal (Analog, Active) – Test
– Sensor Signal (Analog, Passive) – Test
– Sensor Signal (PWM) – Test
– Sensor Supply – Test
– Service Tools
– Solenoid Valve – Test
– Speed Sensor – Adjust
– Speed Sensor – Test
– Switch Circuits – Test
– Symptom Troubleshooting
– System Schematic – Power Train
– Torque Converter Stall – Test
– Torque Converter Troubleshooting
– Transmission Pressures – Test and Adjust
– Transmission Troubleshooting
– Visual Inspection
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
950 GC Wheel Loader Steering System
– Articulated Hitch – Adjust
– General Information (Steering) – HMU Steering
– Hydraulic Oil Contamination – Test
– Machine Preparation for Troubleshooting
– Metering Pump (HMU)
– Monitoring System (Steering Functions)
– Piston Pump (Steering)
– Piston Pump (Steering) High Pressure Stall – Test and Adjust
– Piston Pump (Steering) Low Pressure Standby – Test and
– Piston Pump (Steering) Margin Pressure – Test and Adjust
– Pressure Tap Locations
– Secondary Steering Pump and Electric Motor
– Secondary Steering System (HMU Steering)
– Secondary Steering Valve
– Steering System Troubleshooting
– Steering Time – Check
– System Pressure – Release
– Visual Inspection
Air Conditioning and Heating R134a for All Caterpillar Machines
– Refrigerant Compressor
– System Capacities for Refrigerant (Off-Highway Trucks)
– General Information
– Identifying the Refrigerant
– Identifying the Air Conditioning System
– Identifying the Heating System
– Refrigerant Expansion Valve System
– Refrigerant Orifice Tube System
– Refrigerant Compressor
– Refrigerant Condenser
– Refrigerant Receiver-Dryer
– Refrigerant Compressor
– Refrigerant Expansion Valve
– In-line Refrigerant Dryer
– Refrigerant Orifice Tube Assembly
– Evaporator Coil
– Refrigerant Accumulator
– Refrigerant Compressor Protection System
– Temperature Control
– Pressure Switch (Refrigerant)
– Cab Pressurization and Filtration System
– Condensate Drainage System
– Refrigerant Compressor
– Service Intervals
– Glossary of Terms
– Required Tools
– Machine Preparation for Troubleshooting
– General Troubleshooting Information
– General Troubleshooting Information
– Visual Inspection (Troubleshooting)
– Air Conditioning System Troubleshooting
– Heating System Troubleshooting
– Automatic Temperature Control System (ECM Controlled)
– Refrigerant Compressor
– Troubleshooting Heating and Air Conditioning Control System
– Troubleshooting Heating and Air Conditioning Control System
– Automatic Temperature Control Panel Troubleshooting – 584
– Troubleshooting Condensate Drainage System
– Machine Preparation for Testing and Adjusting
– Air Conditioning Performance – Test
– Refrigerant Leakage – Test
– Manifold Gauge Set (Refrigerant) – Install
– Refrigerant Recovery
– Refrigerant System – Flush
– Refrigerant Compressor
– Refrigerant Oil – Test
– Refrigerant Compressor – Test
– Refrigerant System – Evacuate
– Refrigerant System – Charge
– Manifold Gauge Set (Refrigerant) – Remove
– Compressor Protection System – Test
– Electronic Heat Control – Test
– Heater Performance – Test
– Heating and Air Conditioning Service Publications
– General Information
– Refrigerant Compressor
– Machine Preparation for Disassembly and Assembly
– 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 Compressor
– System Capacities for Refrigerant (Motor Graders)
– System Capacities for Refrigerant (Off-Highway Trucks) –
– Refrigerant Compressor
Cat Autolube System for Medium Wheel Loaders
– Automatic Lubrication System – Charge
– Automatic Lubrication System – Flush
– Automatic Lubrication System – Test
– Automatic Lubrication System Troubleshooting
– General Information
– Lubrication Distribution Valve
– Lubrication Pump
– System Pressure – Release
Cat Payload Kit For Medium Wheel Loaders
– Editing Truck and Material Lists
– General Information (Calibration)
– Menu Navigation
– Normal Weighing Operation
– Reweigh Operation
– Scale System
– Service Menu
– Simple Calibration
– Software – Install
– Totals Menu
– Troubleshooting
– Zero Operation
Disassembly and Assembly 950 GC Wheel Loader Engine Supplement
– Aftercooler Core – Remove and Install
– Air Cleaner – Remove and Install
– Alternator – Remove and Install
– Belt Tensioner – Remove and Install
– Cooling System Package (Radiator, Fan, Aftercooler, Oil
– Crankshaft Front Seal – Install
– Crankshaft Front Seal – Remove
– Electric Starting Motor – Remove and Install
– Engine – Remove and Install
– Engine Enclosure – Remove and Install
– Engine Oil Cooler – Remove and Install
– Fan Group – Remove and Install
– Fuel Filter (Secondary) and Fuel Filter Base – Remove and
– Fuel Priming Pump and Primary Filter (Water Separator) –
– Hydraulic Oil Cooler – Remove and Install
– Muffler – Remove and Install
– Radiator – Remove and Install
– Radiator Top Tank – Remove and Install
– Refrigerant Compressor – Remove and Install
– Transmission Oil Cooler – Remove and Install
– Turbocharger – Remove and Install
– Water Pump – Install
– Water Pump – Remove
– Water Temperature Regulator – Remove and Install
Disassembly and Assembly 950 GC Wheel Loader Machine Systems
– Blower Motor (Air Conditioner and Heater) – Remove and
– Brake Accumulator – Remove and Install
– Brake Control Valve (Parking) – Assemble
– Brake Control Valve (Parking) – Disassemble
– Brake Control Valve (Parking) – Remove and Install
– Brake Control Valve (Service) – Assemble
– Brake Control Valve (Service) – Disassemble
– Brake Control Valve (Service) – Remove and Install
– Bucket – Install
– Bucket – Remove
– Cab – Remove and Install
– Control Manifold (Brake Charge) (Hydraulic Fan Control) –
– Control Manifold (Brake Charge) (Hydraulic Fan Control) –
– Control Manifold (Brake Charge) (Hydraulic Fan Control) –
– Evaporator Coil and Heater Coil – Remove and Install
– Gear Motor (Hydraulic Fan) – Assemble
– Gear Motor (Hydraulic Fan) – Disassemble
– Gear Pump (Brake, Hydraulic Fan) – Assemble
– Gear Pump (Brake, Hydraulic Fan) – Disassemble
– Gear Pump (Brake, Hydraulic Fan) – Install
– Gear Pump (Brake, Hydraulic Fan) – Remove
– Gear Pump (Secondary Steering) – Assemble
– Gear Pump (Secondary Steering) – Disassemble
– Hydraulic Tank – Remove and Install
– Lift Arms – Remove and Install
– Lift Cylinder – Assemble
– Lift Cylinder – Disassemble
– Lift Cylinder – Remove and Install
– Lift Position Sensor and Mounting (Lift Kickout Control) –
– Loader Frame from Rear Frame – Separate
– Loader Frame to Rear Frame – Connect
– Main Control Valve – Assemble
– Main Control Valve – Disassemble
– Main Control Valve and Mounting Plate – Remove and Install
– Metering Pump (HMU) – Remove and Install
– Pilot Operated Hydraulic Control (Joystick) – Assemble
– Pilot Operated Hydraulic Control (Joystick) – Disassemble
– Pilot Operated Hydraulic Control (Joystick) – Remove and
– Piston Pump (Implement) (Pilot) – Assemble
– Piston Pump (Implement) (Pilot) – Disassemble
– Piston Pump (Implement) (Pilot) – Remove and Install
– Piston Pump (Steering) – Assemble
– Piston Pump (Steering) – Disassemble
– Refrigerant Condenser – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– Ride Control Accumulator – Remove and Install
– Seat – Remove and Install
– Secondary Steering Valve – Assemble
– Secondary Steering Valve – Disassemble
– Secondary Steering Valve – Remove and Install
– Steering Cylinder – Assemble
– Steering Cylinder – Disassemble
– Steering Cylinder – Remove and Install
– Steering Frame Lock – Separate and Connect
– Steering Wheel (Command Control Steering) – Remove and
– Steering Wheel (HMU Steering) – Remove and Install
– System Pressure – Release
– Tilt Cylinder – Remove and Install
– Tilt Lever – Remove and Install
– Tilt Link – Remove and Install
– Tilt Position Sensor and Mounting (Worktool Positioner
– Window Wiper and Wiper Motor (Front) – Remove and Install
– Window Wiper and Wiper Motor (Rear) – Remove and Install
Disassembly and Assembly 950 GC Wheel Loader Power Train
– Axle Housing – Assemble
– Axle Housing – Disassemble
– Differential – Assemble
– Differential – Disassemble
– Differential and Bevel Gear – Remove and Install
– Differential Pinion – Assemble
– Differential Pinion – Disassemble
– Drive Shaft (Center) – Remove and Install
– Drive Shaft (Front) – Remove and Install
– Drive Shaft (Rear) – Remove and Install
– Fixed Axle (Front) – Remove and Install
– Oscillating Axle (Rear) – Remove and Install
– Parking Brake – Remove and Install
– Parking Brake Actuator – Remove and Install
– Service Brakes – Remove and Install
– Steering Frame Lock – Separate and Connect
– System Pressure – Release
– Tire and Rim (Front) – Remove and Install
– Tire and Rim (Rear) – Remove and Install
– Torque Converter, Transmission and Output Transfer Gears –
– Transmission – Assemble
– Transmission – Disassemble
– Transmission and Torque Converter – Connect
– Transmission and Torque Converter – Separate
– Transmission Oil Pump – Install
– Transmission Oil Pump – Remove
– Trunnion Support (Oscillating Axle, Front) – Remove and
– Trunnion Support (Oscillating Axle, Rear) – Remove and Install
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
Machine Security System
– Cat Data Link
– Diagnostic Code List
– Diagnostic Operation
– Electrical Component and Connector Locations
– Electrical Connector – Inspect
– Electronic Control Module (ECM)
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Replace
– Emerging Symptom Information
– Engine Does Not Crank and Status Indicator Is Green
– Engine Does Not Start and Status Indicator Is Continuously
– Events
– Factory Password – Obtain
– General Information
– General Information
– General Information
– Glossary of Terms
– Key – Program
– Key Information
– Lost Key
– MID 124 – CID 0168 – FMI 00
– MID 124 – CID 0168 – FMI 01
– MID 124 – CID 0248 – FMI 12
– MID 124 – CID 0817 – FMI 04
– MID 124 – CID 1391 – FMI 03
– MID 124 – CID 1391 – FMI 04
– MID 124 – CID 1392 – FMI 03
– MID 124 – CID 1392 – FMI 04
– Normal Operation
– Operation of Status Indicator
– Product Identification Number – Program
– Protected Functions
– Scheduled Access – “Security System Bypass Times”
– Service Operation Using Machine Security System
– Service Operation Using Service Tool
– Service Tools
– Software – Uninstall – “Immobilizer” Feature
– Symptom Troubleshooting
– System Components
– System Disarm – Program – Security System Bypass
– System Overview
– System Schematic
– Time – Set
– Using Caterpillar Electronic Technician to Determine
Schematic Caterpillar 950 GC Wheel Loader Electrical System
– Feature
– Cover Page
– Information
– Component Location
– Cab Wiring
– Chassis and Engine
– Connector Location
– Cab Wiring
– Chassis and Engine
– Schematics
– Cab Wiring
– Chassis and Engine
– Machine Views
– Cab Wiring
– Cab Interior View
– Cab Rear View
– Cab Right View
– Front Dash View
– Fuse Block
– HVAC Panel View
– Operator Console
– RH Console View
– Chassis and Engine
– Chassis Top View
– Engine Left View
– Engine Right View
– Front Chassis
– LH Ladder View
– Radiator
– Transmission
Schematic Caterpillar 950 GC Wheel Loader Electrical System
– Feature
– Cover Page
– Information
– Component Location
– Cab
– Chassis and Engine
– Connector Location
– Cab
– Chassis and Engine
– Specifications and Related Manuals
– Cab
– Chassis and Engine
– Schematics
– Cab
– Chassis and Engine
– Machine Views
– Cab
– Front Dash View
– Fuse Block
– Rear Cab Interior View
– Rear Cab View
– RH Cab Exterior View
– RH Console View
– Chassis and Engine
– Front Chassis View
– LH Engine View
– LH Ladder View
– LH Rear Chassis View
– Rear Chassis View
– RH Engine View
– RH Rear Chassis View
– Transmission
Schematic Caterpillar 950 GC Wheel Loader Hydraulic System
– Features
– Cover Page
– Information
– Component Location
– Tap Location
– Schematic
– Function Isolation Tools
– Grids On/Off
– All Circuits Off
– All Circuits On
– 021 (Orange) (Pilot Control Output)
– 032 (Red) (Implement Pump Output)
– 141 (Lt Orange) (Fan Pump Output)
– 190 (Dk Pink) (Secondary Steering Pump Output)
– 258 (Dk Purple) (Lift Cylinder Control Circuit)
– 305 (Lt Blue) (Steering Cylinder Control Circuit)
– 346 (Med Green) (Steering Load Sense Control Circuit)
– 347 (Dk Green) (Supply Line)
– 430 (Dk Gray) (Tilt Cylinder Control Circuit)
– 464 (Brown) (Brake Control Circuit)
– 522 (Lt Purple) (Implement Load Sense Control Circuit)
– 577 (Lt Green) (Drain / Return Line)
– 613 (Dk Yellow) (Quick Coupler Cylinder Control Circuit)
– 640 (Blue) (Steering Pump Output)
– 4665 (Tan) (Auxiliary Control Circuit)
– Machine Views
– Implement and Third Auxiliary Valve
– LH Machine Front
– Machine Front
– Machine Rear
– Operator Seat
– Reversing Fan
– RH Machine Top
– Secondary Steering
Schematic Caterpillar 950 GC Wheel Loader Hydraulic System
– Features
– Cover Page
– Information
– Component Location
– Tap Location
– Schematic
– Function Isolation Tools
– Grids On/Off
– All Circuits Off
– All Circuits On
– 021 (Orange) (Pilot Oil Control Circuit)
– 032 (Red) (Implement Pump Output)
– 141 (Lt Orange) (Fan Pump Output)
– 190 (Dk Pink) (Steering Pump Output)
– 258 (Dk Purple) (Aux. Valve Control Circuit)
– 305 (Lt Blue) (Steering Cylinder Control Circuit)
– 347 (Dk Green) (Supply Line)
– 464 (Brown) (Brake Control Circuit)
– 577 (Lt Green) (Drain / Return Line)
– 613 (Dk Yellow) (Tilt Cylinder Control Circuit)
– 651 (Blue Gray) (Lift Cylinder Control Circuit)
– CON 032 (Red/Black Stripe) (Load Sensing Circuit)
– CON 190 (Dk Pink/Black Stripe) (Secondary Steering Control Circuit)
– Machine Views
– Machine Right and Left Side
– Pilot Control (Lift/Tilt)
– Tank GP
– Valve – 2 Function
Schematic Caterpillar Cat Payload Kit For Medium Wheel Loaders Electrical System
Specifications 950 GC Wheel Loader Braking and Hydraulic Fan System
– Brake Control Valve (Parking)
– Brake Control Valve (Service)
– Check Valve (Hydraulic Oil Cooler Bypass)
– Fan Reversing Valve
– Foot Brake Control
– Gear Motor (Hydraulic Fan)
– Gear Motor (Hydraulic Fan)
– Limit Switch (Stop Light)
– Oil Filter (Hydraulic)
– Parking Brake Actuator
– Pressure Sensor (Parking Brake Oil)
– Pressure Sensor (Service Brake Oil)
– Service Brake Control
– Service Brake Control
– Solenoid Valve (Fan Bypass)
– Solenoid Valve (Hydraulic Fan)
– Solenoid Valve (Reversing Fan)
– Temperature Sensor (Hydraulic Oil)
Specifications 950 GC Wheel Loader Electrohydraulic System
– Accumulator (Pilot Oil)
– Accumulator (Pilot Oil)
– Bucket Control
– Check and Relief Valve
– Check Valve (Hydraulic Oil Cooler Bypass)
– Check Valve (Pilot)
– Control Manifold
– Control Manifold
– Control Valve (Auxiliary)
– Control Valve (Auxiliary)
– Coupler Cylinder – Quick Coupler
– Electrohydraulic Control
– Electrohydraulic Control
– Electrohydraulic Control (Joystick)
– Electrohydraulic Control (Joystick)
– Lift Cylinder – Left
– Lift Cylinder – Right
– Main Control Valve
– Main Control Valve
– Makeup Valve – Bucket Lift
– Manifold Group
– Oil Filter (Hydraulic)
– Pilot Valve
– Pilot Valve
– Pilot Valve
– Pilot Valve (Steering)
– Piston Pump (Implement)
– Pump Control Valve
– Pump Control Valve (Implement)
– Relief Valve
– Relief Valve
– Relief Valve
– Relief Valve
– Relief Valve
– Relief Valve (Line)
– Ride Control Accumulator
– Ride Control Accumulator – Uncharged
– Solenoid Valve (Hydraulic Lockout)
– Solenoid Valve (Quick Coupler)
– Solenoid Valve (Ride Control)
– Temperature Sensor (Hydraulic Oil)
– Tilt Cylinder
Specifications 950 GC Wheel Loader Machine Systems
– Air Cleaner
– Air Conditioner
– Air Conditioner Lines
– Armrest
– Bucket Control
– Cab – Cover
– Cab – Roof
– Cab Air Duct
– Cab Liner – Operator Compartment
– Communication Electronic Control Module (Product Link)
– Communication Electronic Control Module (Product Link)
– Cutting Edges, End Bits and Teeth
– Cutting Edges, End Bits and Teeth
– Enclosed Rollover Protective Structure (ROPS)
– Ether Starting Aid
– Flood Lamp
– Flood Lamp
– Flood Lamp
– Front Wiring
– Governor Pedal
– Instrument Panel
– Lift Arm
– Magnetic Switch
– Muffler – Engine Installation Gp
– Position Sensor (Lift Linkage, Tilt Linkage)
– Pressure Switch (Air Conditioner)
– Push Button Switch
– Push Button Switch
– Quick Coupler
– Radiator Cap
– Refrigerant Compressor
– Start Switch
– Switches – Quick Coupler
– Toggle Switch (Ground Level Shutdown)
– Water Lines
– Window Washer
– Window Wiper and Wiper Motor
– Wiring (Cab)
Specifications 950 GC Wheel Loader Power Train
– Accumulator
– Bevel Gear and Pinion (Fixed Axle)
– Bevel Gear and Pinion (Oscillating Axle)
– Check Valve
– Differential Flow Control Valve
– Dump Valve (Transmission)
– Fixed Axle Housing (Front)
– Oil Filter (Power Train)
– Oscillating Axle Housing (Rear)
– Power Train Oil Filler – Axle
– Relief Valve (Torque Converter Inlet)
– Rim Mounting
– Selector and Pressure Control Valve
– Solenoid Valve (Transmission Clutch)
– Speed Sensor (Transmission Output)
– Temperature Sensor (Torque Converter Oil)
– Torque Converter
– Transmission
– Transmission Hydraulic Control – Valve
– Transmission Oil Cooler
– Transmission Oil Pump
Specifications 950 GC Wheel Loader Steering System
– Metering Pump (HMU)
– Piston Pump (Implement, Steering)
– Piston Pump (Steering)
– Pressure Reducing Valve (Steering)
– Pressure Switch (Secondary Steering)
– Relay (Secondary Steering Motor)
– Secondary Steering Pump and Electric Motor
– Secondary Steering Valve
– Steering Control
– Steering Cylinder
– Temperature Sensor (Hydraulic Oil)
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 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 950 GC Wheel Loader Electrohydraulic System
– General Information (Electrohydraulic System)
– Main Control Valve
– Monitoring System (Hydraulic Functions)
– Oil Coolers and Cooling System Operation
– Pilot Hydraulic System
– Pilot Valve
– Piston Pump (Implement)
– Relief Valve (Line)
– Relief Valve (Load Sensing Signal)
– Ride Control System
Systems Operation 950 GC Wheel Loader Power Train
– Autoshift Control
– Data Link
– Differential (Standard)
– Dump Valve (Transmission)
– Electronic Control Module (Power Train)
– Fixed Axle and Oscillating Axle
– General Information
– Graphic Color Codes
– Input Components
– Limited Slip Differential
– Oil Filter (Power Train)
– Output Components
– Output Transfer Gears
– Power Train Electronic Control System
– Torque Converter
– Transmission Control Valve
– Transmission Hydraulic System
– Transmission Lubrication
– Transmission Oil Cooler
– Transmission Oil Pump
– Transmission Power Flow
Systems Operation Troubleshooting Testing and Adjusting Product Link – PL522 523
– System Components
– Reports and Messages Not Available
– Position Reports Not Available
– Reporting Interval Erratic
– Diagnostics and Events Not Available
– Operating Hours Discrepancy
– Event Code List
– Diagnostic Code List
– MID 161 – CID 0168 – FMI 00
– MID 161 – CID 0168 – FMI 01
– MID 161 – CID 0254 – FMI 04
– Installation Parameters Configure
– MID 161 – CID 0254 – FMI 12
– MID 161 – CID 1250 – FMI 09
– MID 161 – CID 1251 – FMI 03
– MID 161 – CID 1888 – FMI 14
– MID 161 – CID 3766- FMI 14
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Replace
– Electrical Connector – Inspect
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
– Configuration
– Specifications
– System Schematic
– Spare Input Configure
– Commands
– General Information
– Service Tools
– Diagnostic Capabilities
– Electronic Service Tool Does Not Communicate with ECM
– System Overview
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