Komatsu HD325-7, HD405-7 SEN00486-07 (Preview)
COVER
00 Index and foreword
Index
Composition of shop manual
Table of contents
Foreword and general information
Safety notice
How to read the shop manual
Explanation of terms for maintenance standard
Handling of electric equipment and hydraulic component
How to read electric wire code
Precautions when carrying out operation
Method of disassembling and connecting push-pull type coupler
Standard tightening torque table
Conversion table
01 Specification
Specification and technical data
Specification drawing
Specifications
Weight table
Fuel, coolant and lubricants
10 Structure, function and maintenance standard
Engine and cooling system
Radiator, oil cooler, aftercooler
Output shaft
Power train, Part 1
Power train skeleton
Drive shaft
Torque converter and transmission hydraulic piping
Power train charge pump
Retarder cooling pump
Torque converter
Torque converter valve
Transmission
Transmission control valve
ECMV
Power train, Part 2
Axle
Differential
Final drive
Wheel
Steering system
Steering column
Steering linkage
Brake system
Brake piping
Brake valve
Secondary brake valve
Relay valve
Front brake cut valve
Accumulator charge valve
Accumulator
Slack adjuster
Brake
Proportional reducing valve
Parking brake
Parking brake solenoid
Hand brake (retarder)
Undercarriage and frame
Suspension
Suspension cylinder
Rear axle support
Hydraulic system
Steering, hoist oil pressure piping diagram
Dump body control
Hydraulic tank
Steering valve
Cross-over relief valve
Steering control valve
Hoist valve
EPC valve
Steering cylinder
Hoist cylinder
Work equipment and steering pump
Cab and its attachments
ROPS cab
Air conditioner
Rear view monitor
Electrical system, Part 1
Machine monitor system
Electrical system, Part 2
Automatic shift control system
Transmission controller
Auto emergency steering system
Retarder control system
Dump control lever
Auto suspension system
Electrical system, Part 3
Payload meter II (card type)
Electrical system, Part 4
Sensors, switches
KOMTRAX terminal system (If equipped)
20 Standard value table
Standard service value table
Standard value table for engine
Standard value table for machine
30 Testing and adjusting
Testing and adjusting, Part 1
Tools for testing, adjusting, and troubleshooting
Testing engine speed
Testing intake air pressure (boost pressure)
Testing exhaust temperature
Testing exhaust gas color
Adjusting valve clearance
Testing compression pressure
Testing blow-by pressure
Testing engine oil pressure
Testing EGR valve and bypass valve drive oil pressure
Handling of fuel system devices
Releasing residual pressure from fuel system
Testing fuel pressure
Testing fuel return rate and leakage
Bleeding air from fuel circuit
Testing the fuel circuit for leakage
Testing and adjusting alternator belt tension
Testing and adjusting fan belt tension
Testing and adjusting air conditioner compressor belt tension
Testing and adjusting, Part 2
Testing torque converter stall speed
Testing power train oil pressure
Adjusting transmission speed sensor
Testing brake oil pressure
Testing of accumulator nitrogen gas pressure and procedure for charging accumulator with nitrogen gas
Testing brake performance
Testing and adjusting parking brake performance
Bleeding air from brake circuit
Testing wear of rear brake disc
Testing wear of front brake pad
Method for emergency release of parking brake
Testing and adjusting front suspension cylinder
Testing and adjusting inverted type rear suspension cylinder
Testing and adjusting front suspension cylinder (mode selector hydraulic cylnder)
Testing and adjusting hydraulic pressure in steering, hoist circuit
Testing and adjusting dump EPC circuit oil pressure
Air bleeding from steering cylinder
Procedure for raising body in emergency
Adjusting body positioner sensor
Handling of high voltage circuit of engine controller
Adjusting transmission controller
Method for emergency escape at electrical system failure
Testing and adjusting, Part 3
Setting and adjusting of devices
Special functions of machine monitor (EMMS)
Testing and adjusting, Part 4
How to start operation of KOMTRAX terminal
Lamp display of KOMTRAX terminal
Pm Clinic check sheet
Setting of card-type payload meter (PLM-II) after installation or replacement
40 Troubleshooting
General information on troubleshooting
Points to remember when troubleshooting
Sequence of events in troubleshooting
Checks before troubleshooting
Classification and procedures of troubleshooting
Connection table for connector pin numbers
T-adapter box and T-adapter table
Troubleshooting by failure code, General
Failure codes table
Before troubleshooting by failure codes
Contents of troubleshooting table
Troubleshooting by failure code, Part 1
Failure code [1500L0] (Dual engagement)
Failure code [15B0NX] (Transmission oil filter: Clogging)
Failure code [15F0KM] (R → F shifting abuse 1: Mistake in operation)
Failure code [15F0MB] (R → F shifting abuse 2: Mistake in operation)
Failure code [15F7KM] (Forward clutch disk abuse: Mistake in operation or setting)
Failure code [15G0MW] (R clutch: Slipping)
Failure code [15G7KM] (Reverse clutch disk abuse: Mistake in operation or setting)
Failure code [15H0MW] (Hi clutch: Slipping)
Failure code [15J0MW] ( Lo clutch: Slipping)
Failure code [15K0MW] (1st clutch: Slipping)
Failure code [15L0MW] (2nd clutch: Slipping)
Failure code [15M0MW] (3rd clutch: Slipping)
Failure code [15N0MW] (4th clutch: Slipping)
Failure code [15SBL1] (R clutch solenoid: Fill signal is ON when command current is OFF)
Failure code [15SBMA] (R clutch solenoid: Malfunction)
Failure code [15SCL1] (Hi clutch solenoid: Fill signal is ON when command current is OFF)
Failure code [15SCMA] (Hi clutch solenoid: Malfunction)
Failure code [15SDL1] (Lo clutch solenoid: Fill signal is ON when command current is OFF)
Failure code [15SDMA] (Lo clutch solenoid: Malfunction)
Failure code [15SEL1] (1st clutch solenoid: Fill signal is ON when command current is OFF)
Failure code [15SEMA] (1st clutch solenoid: Malfunction)
Failure code [15SFL1] (2nd clutch solenoid: Fill signal is ON when command current is OFF)
Failure code [15SFMA] (2nd clutch solenoid: Malfunction)
Failure code [15SGL1] (3rd clutch solenoid: Fill signal is ON when command current is OFF)
Failure code [15SGMA] (3rd clutch solenoid: Malfunction)
Failure code [15SHL1] (4th clutch solenoid: Command current is OFF and fill signal is ON)
Failure code [15SHMA] (4th clutch solenoid: Malfunction)
Failure code [15SJMA] (Lockup clutch solenoid: Malfunction)
Failure code [989A00] (Engine over run prevention command signal: Operating)
Failure code [989D00] (Rear section tipping over alarm: Alarm is activated)
Failure code [2F00KM] (Parking brake: Mistake in operation or setting)
Failure code [2G42ZG] (Front accumulator: Lowering of oil pressure)
Failure code [2G43ZG] (Rear accumulator: Lowering of oil pressure)
Failure code [A570NX] (Engine oil filter: Clogging)
Failure code [AA10NX] (Air cleaner element: Clogging)
Failure code [AB00MA] (Alternator: Malfunction)
Failure code [B@BAZG] (Abnormal lowering of engine oil pressure: Lowering of oil pressure)
Failure code [B@BAZK] (Engine oil: Level too low)
Failure code [B@BCZK] (Lowering of radiator coolant: Lowering of level)
Failure code [B@BCNS] (Engine: Overheat)
Failure code [B@GAZK] (Battery electrolyte level: Lowering of level)
Failure code [B@JANS] (Steering oil: Overheat)
Troubleshooting by failure code, Part 2
Failure code [CA111] (Abnormality in engine controller)
Failure code [CA115] (Abnormal engine Ne and Bkup sensors)
Failure code [CA122] (Charge pressure sensor too high)
Failure code [CA123] (Charge pressure sensor too low)
Failure code [CA131] (Throttle sensor too high)
Failure code [CA132] (Throttle sensor too low)
Failure code [CA135] (Oil pressure sensor too high)
Failure code [CA141] (Oil pressure sensor too low)
Failure code [CA144] (Coolant temperature sensor too high)
Failure code [CA145] (Coolant temperature sensor too low)
Failure code [CA153] (Charge temperature sensor too high)
Failure code [CA154] (Charge temperature sensor too low)
Failure code [CA187] (Sensor power source 2 too low)
Failure code [CA221] (Atmospheric pressure sensor too high)
Failure code [CA222] (Atmospheric pressure sensor too low)
Failure code [CA227] (Sensor power source 2 too high)
Failure code [CA234] (Engine over speed)
Failure code [CA238] (Abnormal power source for engine Ne speed sensor)
Failure code [CA263] (Fuel temperature sensor too high)
Failure code [CA265] (Fuel temperature sensor too low)
Failure code [CA271] (PCV1 short circuit)
Failure code [CA272] (PCV1 disconnection)
Failure code [CA273] (PCV2 short circuit)
Failure code [CA274] (PCV2 disconnection)
Failure code [CA322] (Injector No. 1 system disconnection or short circuit)
Failure code [CA323] (Injector No. 5 system disconnection or short circuit)
Failure code [CA324] (Injector No. 3 system disconnection or short circuit)
Failure code [CA325] (Injector No. 6 system disconnection or short circuit)
Failure code [CA331] (Injector No. 2 system disconnection or short circuit)
Failure code [CA332] (Injector No. 4 system disconnection or short circuit)
Failure code [CA342] (Abnormal engine controller data consistency)
Failure code [CA351] (Abnormal injector drive circuit)
Failure code [CA352] (Sensor power source 1 too low)
Failure code [CA386] (Sensor power source 1 too high)
Failure code [CA431] (Abnormal idle validation switch)
Failure code [CA432] (Abnormal process with idle validation switch)
Failure code [CA441] (Power source voltage too low)
Failure code [CA442] (Power source voltage too high)
Failure code [CA449] (Common rail pressure too high 2)
Failure code [CA451] (Common rail pressure sensor too high)
Failure code [CA452] (Common rail pressure sensor too low)
Failure code [CA553] (Common rail pressure too high 1)
Failure code [CA554] (In-range error of common rail pressure sensor)
Failure code [CA559] (Loss of pressure feed from supply pump abnormal 1)
Failure code [CA689] (Abnormal engine Ne speed sensor)
Failure code [CA731] (Abnormal engine Bkup speed sensor phase)
Failure code [CA757] (Loss of all engine controller data)
Failure code [CA778] (Abnormal engine Bkup speed sensor)
Failure code [CA1228] (Abnormal EGR valve servo 1)
Failure code [CA1625] (Abnormal EGR valve servo 2)
Failure code [CA1626] (Short circuit of bypass valve solenoid drive)
Failure code [CA1627] (Disconnection in bypass valve solenoid drive)
Failure code [CA1628] (Abnormal bypass valve servo 1)
Failure code [CA1629] (Abnormal bypass valve servo 2)
Troubleshooting by failure code, Part 3
Failure code [CA1631] (Bypass valve lift sensor too high)
Failure code [CA1632] (Bypass valve lift sensor too low)
Failure code [CA1633] (Abnormal KOMNET)
Failure code [CA1642] (EGR inlet pressure sensor too low)
Failure code [CA1653] (EGR inlet pressure sensor too high)
Failure code [CA2185] (Throttle sensor power source too high)
Failure code [CA2186] (Throttle sensor power source too low)
Failure code [CA2249] (Loss of pressure feed from supply pump abnormal 2)
Failure code [CA2271] (EGR valve lift sensor too high)
Failure code [CA2272] (EGR valve lift sensor too low)
Failure code [CA2351] (EGR valve solenoid drive short circuit)
Failure code [CA2352] (EGR valve solenoid drive disconnection)
Failure code [CA2555] (Intake air heater relay disconnection)
Failure code [CA2556] (Intake air heater relay short circuit)
Failure code [D19HKB] (Stop lamp relay output system: Short circuit)
Failure code [D5ZKKZ] (Front brake cut-off solenoid valve: Disconnection or short circuit)
Failure code [DAFRKR] (Abnormal CAN communication (machine monitor): Abnormal communication)
Failure code [DAQ0KK] (Transmission controller direct power supply: Lowering of source voltage)
Failure code [DAQ0KT] (Transmission controller nonvolatile memory: Abnormality in controller)
Failure code [DAQ2KK] (Transmission controller solenoid power source: Power source voltage too low)
Failure code [DAQ9KQ] (Transmission controller: Disagreement of model selection)
Failure code [DAQRMA] (Transmission controller option setting: Malfunction)
Failure code [DB10KT] (Retarder controller nonvolatile memory: Abnormality in controller)
Failure code [DB12KK] (Retarder controller solenoid power source: Power source voltage too low)
Failure code [DB13KK] (Retarder controller direct power source: Power source voltage too low)
Failure code [DB1RKR] (CAN communication (retarder controller): Communication disabled)
Failure code [DB1SKQ] (Model selection: Wrong information)
Failure code [DB2RKR] (CAN communication (engine controller): Communication disabled)
Failure code [DDD7KX] (Trouble in travel speed setting switch system: Out of input signal range) (If equipped)
Failure code [DDD8KA] (ARSC system switch system: Disconnection)
Failure code [DDD8KB] (ARSC system switch system: Short circuit)
Failure code [DDDAKA] (ASR system switch: Disconnection) (If equipped)
Failure code [DDDAKB] (ASR system switch: Short circuit)
Failure code [DDTHKA] (Hi clutch fill switch: Disconnection)
Failure code [DDTJKA] (Lo clutch fill switch: Disconnection)
Failure code [DDTKKA] (1st clutch fill switch: Disconnection)
Failure code [DDTLKA] (2nd clutch fill switch: Disconnection)
Failure code [DDTMKA] (3rd clutch fill switch: Disconnection)
Failure code [DDTNKA] (R clutch fill switch: Disconnection)
Failure code [DDTPKA] (4th clutch fill switch : Disconnection)
Failure code [DF10KA] (Gear shift lever: Disconnection)
Failure code [DF10KB] (Gear shift lever: Short circuit)
Failure code [DGF1KX] (Transmission oil temperature sensor: Out of input signal range)
Failure code [DGR2KZ] (Retarder oil temperature sensor : Disconnection or short circuit)
Failure code [DGR6KX] (Steering oil temperature sensor: Input signal out of range)
Failure code [DGT1KX] (Torque converter oil temperature sensor: Out of input signal range)
Troubleshooting by failure code, Part 4
Failure code [DHP6KA] (Suspension pressure sensor system (Rear right): Disconnection)
Failure code [DHP6KX] (Failure in suspension pressure sensor system trouble (Rear right): Out of input signal range)
Failure code [DHP7KA] (Suspension pressure sensor system (Rear left): Disconnection)
Failure code [DHP7KX] (Failure in suspension pressure sensor system trouble (Rear left): Out of input signal range)
Failure code [DHT5KX] (Torque converter oil pressure sensor: Out of input signal range)
Failure code [DHT5L6] (Torque converter oil pressure sensor: Disagreement of run and stop condition with signal)
Failure code [DHU2KX] (Front accumulator oil pressure sensor: Out of input signal range)
Failure code [DHU3KX] (Rear accumulator oil pressure sensor: Out of input signal range)
Failure code [DJF1KA] (Fuel level sensor: Disconnection)
Failure code [DK51L5] (Retarder lever potentiometer: Potentiometer signal is inconsistent with swich signal)
Failure code [DK52KX] (Failure in hoist lever potentiometer 1: Out of input signal range)
Failure code [DK53L8] (Failure in hoist lever potentiometer 2: Disagreement of analog signal)
Failure code [DK54KX] (Body positioner sensor: Out of input signal range)
Failure code [DKD0L6] (Failure in steering speed sensor: Disagreement of run and stop condition with signal) (If equipped)
Failure code [DKH0KX] (Pitch angle sensor: Out of input signal range) (If equipped)
Failure code [DLF1KA] (Transmission input shaft speed sensor: Disconnection)
Failure code [DLF1LC] (Transmission input shaft speed sensor: Disagreement of revolution speed signal)
Failure code [DLF2KA] (Transmission intermediate shaft speed sensor: Disconnection)
Failure code [DLF2LC] (Transmission intermediate shaft speed sensor: Disagreement of revolution speed signal)
Failure code [DLT3KA] (Transmission output shaft speed sensor: Disconnection)
Failure code [DLT3LC] (Transmission output shaft speed sensor: Disagreement of revolution speed signal) (If equipped)
Failure code [DLT4KA] (Transmission output shaft speed sensor: Disconnection) (If equipped)
Failure code [DLT4LC] (Transmission output shaft speed sensor: Disagreement of revolution speed signal) (If equipped)
Failure code [DW35KZ] (Failure in output system of auto suspension solenoid 1: Disconnection or short circuit) (If equipped)
Failure code [DW36KZ] (Failure in output system of auto suspension solenoid 2: Disconnection or short circuit) (If equipped)
Failure code [DW72KZ] (Failure in kick-out solenoid output system: Disconnection or short circuit)
Failure code [DW73KZ] (Failure in hoist select valve output system: Disconnection or short circuit)
Failure code [DW78KZ] (Failure in rear brake BCV command output system: Disconnection or short circuit)
Failure code [DX11K4] (Rear brake proportional pressure reducing solenoid valve: Out of control)
Failure code [DX11KA] (Rear brake proportional pressure reducing solenoid valve output circuit: Disconnection)
Failure code [DX11KB] (Rear brake proportional pressure reducing solenoid valve: Short circuit)
Failure code [DX11KY] (Rear brake proportional pressure reducing solenoid valve: Short circuit to power source line)
Failure code [DX11MA] (Rear brake proportional pressure reducing solenoid valve: Malfunction)
Failure code [DX13KA] (Output circuit of hoist EPC valve: Disconnection)
Failure code [DX13KB] (Output circuit of hoist EPC valve: Short circuit)
Failure code [DX13KY] (Output circuit of hoist EPC valve: Short circuit with power source line)
Troubleshooting by failure code, Part 5
Failure code [DXH1KA] (Lockup clutch solenoid output circuit: Disconnection)
Failure code [DXH1KB] (Lock-up clutch solenoid output circuit: Short circuit)
Failure code [DXH1KY] (Lockup clutch solenoid output circuit: Short circuit to power source line)
Failure code [DXH2KA] (Hi clutch solenoid output circuit: Disconnection)
Failure code [DXH2KB] (Hi clutch solenoid output circuit: Short circuit)
Failure code [DXH2KY] (Hi clutch solenoid output circuit: Short circuit to power source line)
Failure code [DXH3KA] (Lo clutch solenoid output circuit: Disconnection)
Failure code [DXH3KB] (Lo clutch solenoid output circuit: Short circuit)
Failure code [DXH3KY] (Lo clutch solenoid output circuit: Short circuit in power source line)
Failure code [DXH4KA] (1st clutch solenoid output circuit: Disconnection)
Failure code [DXH4KB] (1st clutch solenoid output circuit: Short circuit)
Failure code [DXH4KY] (1st clutch solenoid output circuit: Short circuit to power source line)
Failure code [DXH5KA] (2nd clutch solenoid output circuit: Disconnection)
Failure code [DXH5KB] (2nd clutch solenoid output circuit: Short circuit)
Failure code [DXH5KY] (2nd clutch solenoid output circuit: Short circuit in power source line)
Failure code [DXH6KA] (3rd clutch solenoid output circuit: Disconnection)
Failure code [DXH6KB] (3rd clutch solenoid output circuit: Short circuit)
Failure code [DXH6KY] (3rd clutch solenoid output circuit: Short circuit to power source line)
Failure code [DXH7KA] (R clutch solenoid output circuit: Disconnection)
Failure code [DXH7KB] (R clutch solenoid output circuit: Short circuit)
Failure code [DXH7KY] (R clutch solenoid output circuit: Short circuit to power source line)
Failure code [DXHHKA] (4th clutch solenoid output circuit: Disconnection)
Failure code [DXHHKB] (4th clutch solenoid output circuit: Short circuit)
Failure code [DXHHKY] (4th clutch solenoid output circuit: Short circuit to power source line)
Troubleshooting of electrical system (E-mode)
Before troubleshooting of electric system
Contents of troubleshooting table
E-1 Engine does not start
E-2 Automatic preheating does not operate
E-3 Machine monitor does not display all, when starting switch is turned ON
E-4 Machine monitor does not operate when starting switch is OFF
E-5 Alarm buzzer does not sound
E-6 Gauges of machine monitor, caution lamps or character display section do not display properly
E-7 A selection of the display in character display section cannot be changed
E-8 Power mode selecting function does not operate properly
E-9 AISS function does not operate properly
E-10 Seat belt caution lamp does not display properly
E-11 Turn signal lamp or turning lamp (hazard lamp) do not work properly
E-12 Night illumination (lighting) does not work properly
E-13 Emergency steering does not operate
Troubleshooting of hydraulic and mechanical system (H-mode)
Contents of troubleshooting table
H-1 Machine does not start
H-2 Machine does not travel smoothly (hunting)
H-3 Lockup cannot be cancelled
H-4 Excessive shock when starting or shifting
H-5 Transmission does not shift up
H-6 Machine lacks power or speed when traveling
H-7 Time lag is excessive when starting or shifting gear
H-8 Torque converter oil temperature is high
H-9 Torque converter oil pressure is low
H-10 Front brake is ineffective
H-11 Rear brake is ineffective
H-12 Steering wheel is heavy
H-13 Steering wheel does not work
H-14 Steering wheel vibrates
H-15 Dump body lifting speed is slow
H-16 Dump body does not work
H-17 Excessive hydraulic drift of dump body
Troubleshooting of mechanical system (S-mode)
Method of using troubleshooting charts
S-1 Starting performance is poor
S-2 Engine does not start
S-3 Engine does not pick up smoothly
S-4 Engine stops during operations
S-5 Engine does not rotate smoothly
S-6 Engine lacks output (or lacks power)
S-7 Exhaust gas color is black (incomplete combustion)
S-8 Oil consumption is excessive (or exhaust smoke is blue)
S-9 Oil becomes contaminated quickly
S-10 Fuel consumption is excessive
S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)
S-12 Oil pressure drops
S-13 Oil level rises (Entry of coolant/fuel)
S-14 Coolant temperature becomes too high (overheating)
S-15 Abnormal noise is made
S-16 Vibration is excessive
50 Disassembly and assembly
General information on disassembly and assembly
How to read this manual
List of adhesives
Special tool list
Sketches of special tools
Engine and cooling system
Removal and installation of engine assembly
Removal and installation of radiator assembly
Removal and installation of output shaft assembly
Disassembly and assembly of output shaft assembly
Removal and installation of fuel supply pump assembly
Removal and installation of fuel injector assembly
Power train, Part 1
Removal and installation of torque converter and transmission assembly
Disassembly and assembly of torque converter and control valve assembly
Disassembly and assembly of torque converter assembly
Disassembly and assembly of PTO assembly
Disassembly and assembly of transmission assembly
Removal and installation of transmission control valve assembly (ECMV assembly)
Disassembly and assembly of transmission control valve assembly (ECMV assembly)
Power train, Part 2
Removal and installation of differential assembly
Disassembly and assembly of differential assembly
Removal and installation of rear final drive carrier assembly
Disassembly and assembly of rear final drive carrier assembly
Disassembly and assembly of rear final drive assembly
Disassembly and assembly of front wheel hub assembly
Steering system
Disassembly and assembly of steering cylinder assembly
Removal and installation of emergency steering motor pump assembly
Brake system
Removal and installation of front brake caliper pad
Removal and installation of front brake caliper assembly
Disassembly and assembly of front brake caliper assembly
Removal and installation of rear brake assembly
Disassembly and assembly of rear brake assembly
Removal and installation of parking brake pad
Removal and installation of parking brake caliper assembly
Disassembly and assembly of front brake caliper pad assembly
Removal and installation of parking brake spring cylinder assembly
Removal and installation of slack adjuster assembly
Disassembly and assembly of slack adjuster assembly
Undercarriage and frame
Removal and installation of front wheel assembly
Removal and installation of rear wheel assembly
Removal and installation of front suspension cylinder assembly
Disassembly and assembly of front suspension cylinder assembly
Disassembly and assembly of variable damping selector valve assembly
Removal and installation of rear suspension cylinder assembly
Disassembly and assembly of rear suspension cylinder assembly
Hydraulic system
Disassembly and assembly of hoist cylinder assembly
Body
Removal and installation of body assembly
Cab and its attachments
Disassembly and assembly of operator’s seat assembly
Removal and installation of air conditioner unit assembly
Electrical system
Removal and installation of engine controller assembly
Removal and installation of transmission controller assembly
Removal and installation of retarder controller assembly
90 Diagrams and drawings
Hydraulic diagrams and drawings
Power train hydraulic circuit diagram
Steering and hoist hydraulic circuit diagram HD325-7 Serial No. 7001 – 7025, 7101 – 7522 HD405-7 Serial No. 3001 – 3035, 7101 – 7522
Steering and hoist hydraulic circuit diagram HD325-7 Serial No. 7253 – HD405-7 Serial No. 7523 –
Brake hydraulic circuit diagram
Electrical diagrams and drawings
Electrical circuit diagram for inside cab (1/5)
Electrical circuit diagram for inside cab (2/5) HD325-7 Serial No. 7001 – 7025, 7101 – 7161 HD405-7 Serial No. 3001 – 3035, 7101 – 7157
Electrical circuit diagram for inside cab (2/5) HD325-7 Serial No. 7162 – HD405-7 Serial No. 7158 –
Electrical circuit diagram for inside cab (3/5) HD325-7 Serial No. 7001 – 7025, 7101 – 7161 HD405-7 Serial No. 3001 – 3035, 7101 – 7157
Electrical circuit diagram for inside cab (3/5) HD325-7 Serial No. 7162 – HD405-7 Serial No. 7158 –
Electrical circuit diagram for inside cab (4/5)
Electrical circuit diagram for inside cab (5/5)
Electrical circuit diagram for outside cab (1/3)
Electrical circuit diagram for outside cab (2/3)
Electrical circuit diagram for outside cab (3/3)
Connectors table and arrangement drawing
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