Komatsu D51EX-22, D51PX-22 with 6D107E-1 Engine Crawler Dozer Service Manual
1,269 pages · Publication CEBM019110
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- Models
- D51EX-22, D51PX-22 with 6D107E-1 Engine
- Serial coverage
- B10001 and up
- Manual type
- Service Manual
- Pages
- 1,269
- Publication
- CEBM019110
- Condition
- Brand new
What's inside
From the manual's own table of contents: 2 sections, 258 entries. See sample pages (PDF, 759 KB)
FOREWORD7 topics
- GENERAL
- STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
- STANDARD VALUE TABLES
- TESTING AND ADJUSTING
- TROUBLESHOOTING
- DISASSEMBLY AND ASSEMBLY
- OTHER
TROUBLESHOOTING249 topics
- ABNORMAL POWER SOURCE FOR NE SPEED SENSOR
- ERROR CODE [CA271]
- IMV/PCV1 SHORT CIRCUITED
- ERROR CODE [CA272]
- IMV/PCV1 OPEN
- ERROR CODE [CA322]
- NO.1 INJECTOR SHOWING OPEN OR SHORT
- ERROR CODE [CA323]
- NO.5 INJECTOR SHOWING OPEN OR SHORT
- ERROR CODE [CA324]
- NO.3 INJECTOR SHOWING OPEN OR SHORT
- ERROR CODE [CA325]
- NO.6 INJECTOR SHOWING OPEN OR SHORT
- ERROR CODE [CA331]
- NO.2 INJECTOR SHOWING OPEN OR SHORT
- ERROR CODE [CA332]
- NO.4 INJECTOR SHOWING OPEN OR SHORT
- ERROR CODE [CA342]
- ENGINE CONTROLLER DATA MATCHING ERROR
- ERROR CODE [CA352]
- SENSOR POWER SOURCE TOO LOW
- ERROR CODE [CA386]
- SENSOR POWER SOURCE TOO HIGH
- ERROR CODE [CA428]
- WATER IN FUEL SENSOR VOLTAGE TOO HIGH
- ERROR CODE [CA429]
- WATER IN FUEL SENSOR VOLTAGE TOO LOW
- ERROR CODE [CA435]
- ABNORMAL ENGINE OIL PRESSURE SWITCH
- ERROR CODE [CA441]
- POWER SOURCE VOLTAGE IS TOO LOW
- ERROR CODE [CA442]
- POWER SOURCE VOLTAGE TOO HIGH
- ERROR CODE [CA449]
- COMMON RAIL PRESSURE TOO HIGH
- ERROR CODE [CA451]
- ERROR CODE [CA452]
- COMMON RAIL PRESSURE TOO LOW
- ERROR CODE [CA488]
- CHARGE TEMPERATURE TOO HIGH AND TORQUE DERATED
- ERROR CODE [CA553]
- ERROR CODE [CA559]
- LOSS OF PRESSURE FEED FROM SUPPLY PUMP
- ERROR CODE [CA689]
- ABNORMAL ENGINE NE SPEED SENSOR
- ERROR CODE [CA731]
- ABNORMAL ENGINE BKUP SPEED SENSOR PHASE
- ERROR CODE [CA757]
- LOSS OF ALL ENGINE CONTROLLER DATA
- ERROR CODE [CA778]
- ABNORMAL ENGINE BKUP SPEED SENSOR
- ERROR CODE [CA1633]
- ABNORMAL KOMNET
- ERROR CODE [CA2185]
- DECELERATOR PEDAL SENSOR POWER SOURCE TOO HIGH
- ERROR CODE [CA2186]
- DECELERATOR PEDAL SENSOR POWER SOURCE TOO LOW
- ERROR CODE [CA2249]
- LOSS OF PRESSURE FEED FROM SUPPLY PUMP (2)
- ERROR CODE [CA2311]
- ABNORMAL IMV SOLENOID
- ERROR CODE [CA2555]
- AIR INTAKE HEATER RELAY DISCONNECTION
- ERROR CODE [CA2556]
- AIR INTAKE HEATER RELAY SHORT CIRCUIT
- ERROR CODE [D130KA]
- NEUTRAL SAFETY RELAY DISCONNECTION
- ERROR CODE [D130KB]
- NEUTRAL SAFETY RELAY SHORT CIRCUIT
- ERROR CODE [DAFRKR]
- CAN COMMUNICATION MONITOR PANEL – HST CONTROLLER
- ERROR CODE [DAFRMC]
- CAN COMMUNICATION MONITOR PANEL – ENGINE CONTROLLER
- ERROR CODE [DAJ000]
- HST CONTROLLER MEMORY ERROR
- ERROR CODE [DAJ0KK]
- HST CONTROLLER LOWERING OF SOURCE VOLTAGE
- ERROR CODE [DAJ0KQ]
- HST CONTROLLER MACHINE CODE ERROR
- ERROR CODE [DAJ0KT]
- ERROR CODE [DAJ5KK]
- HST CONTROLLER POWER SUPPLY LOWING
- ERROR CODE [DAJ6KK]
- HST POWER SUPPLY LOWING
- ERROR CODE [DAJRKR]
- CAN COMMUNICATION HST CONTROLLER DEFECTIVE
- ERROR CODE [DB2RKR]
- ERROR CODE [DD12KA]
- SHIFT UP SWITCH DISCONNECTION
- ERROR CODE [DD12KB]
- SHIFT UP SWITCH SHORT CIRCUIT
- ERROR CODE [DD13KA]
- SHIFT DOWN SWITCH DISCONNECTION
- ERROR CODE [DD13KB]
- SHIFT DOWN SWITCH SHORT CIRCUIT
- ERROR CODE [DD14KB]
- TRAVEL LOCK LIMIT SWITCH 1 SHORT CIRCUIT
- ERROR CODE [DD1NL4]
- FAN ROTATION SELECTOR SWITCH DISAGREEMENT
- ERROR CODE [DDDCKB]
- REVERSE TRAVEL SPEED SWITCH SHORT CIRCUIT
- ERROR CODE [DDP6KA]
- BRAKE OIL PRESSURE SENSOR DISCONNECTION
- ERROR CODE [DDP6KB]
- BRAKE OIL PRESSURE SENSOR SHORT CIRCUIT
- ERROR CODE [DDP6MA]
- BRAKE OIL PRESSURE SENSOR MALFUNCTION
- ERROR CODE [DDQ2KA]
- TRAVEL LOCK LIMIT SWITCH 1 DISCONNECTION
- ERROR CODE [DDT0L4]
- SHIFT MODE SWITCH DISAGREEMENT OF ON/ OFF SIGNALS
- ERROR CODE [DDU1FS]
- TRAVEL LOCK LIMIT SWITCHES 1 AND 2 FIXING
- ERROR CODE [DDU1KA]
- TRAVEL LOCK LIMIT SWITCH 2 DISCONNECTION
- ERROR CODE [DDU1KY]
- TRAVEL LOCK LIMIT SWITCH 2 SHORT WITH POWER SUPPLY LINE
- ERROR CODE [DGS1KA]
- HST OIL TEMPERATURE SENSOR DISCONNECTION
- ERROR CODE [DGS1KX]
- HST OIL TEMPERATURE SENSOR OUT OF INPUT SIGNAL RANGE
- ERROR CODE [DHH5KA]
- LEFT HST PUMP PRESSURE SENSOR DISCONNECTION
- ERROR CODE [DHH5KB]
- LEFT HST PUMP PRESSURE SENSOR SHORT CIRCUIT
- ERROR CODE [DHH6KA]
- RIGHT HST PUMP PRESSURE SENSOR DISCONNECTION
- ERROR CODE [DHH6KB]
- RIGHT HST PUMP PRESSURE SENSOR SHORT CIRCUIT
- ERROR CODE [DK10KA]
- FUEL DIAL SENSOR DISCONNECTION
- ERROR CODE [DK10KB]
- FUEL DIAL SENSOR SHORT CIRCUIT
- ERROR CODE [DK30KA]
- STEERING ANGLE SENSOR 1 DISCONNECTION
- ERROR CODE [DK30KB]
- STEERING ANGLE SENSOR 1 SHORT CIRCUIT
- ERROR CODE [DK30KX]
- STEERING ANGLE SENSOR OUT OF INPUT SIGNAL RANGE
- ERROR CODE [DK30KZ]
- STEERING ANGLE SENSOR DISCONNECTION OR SHORT CIRCUIT
- ERROR CODE [DK30L8]
- STEERING ANGLE SENSOR DISAGREEMENT OF ANALOG SIGNALS
- ERROR CODE [DK31KA]
- STEERING ANGLE SENSOR DISCONNECTION
- ERROR CODE [DK31KB]
- STEERING ANGLE SENSOR 2 SHORT CIRCUIT
- ERROR CODE [DK40KA]
- BRAKE PEDAL SENSOR DISCONNECTION
- ERROR CODE [DK40KB]
- BRAKE PEDAL SENSOR SHORT CIRCUIT
- ERROR CODE [DK55KX]
- DIRECTIONAL POTENTIOMETER OUT OF INPUT SIGNAL RANGE
- ERROR CODE [DK55KZ]
- DIRECTIONAL POTENTIOMETER DISCONNECTION OR SHORT CIRCUIT
- ERROR CODE [DK55L8]
- DIRECTIONAL POTENTIOMETER DISAGREEMENT OF ANALOG SIGNALS
- ERROR CODE [DK56KA]
- DIRECTIONAL POTENTIOMETER 1 DISCONNECTION
- ERROR CODE [DK56KB]
- DIRECTIONAL POTENTIOMETER 1 SHORT CIRCUIT
- ERROR CODE [DK57KA]
- DIRECTIONAL POTENTIOMETER 2 DISCONNECTION
- ERROR CODE [DK57KB]
- DIRECTIONAL POTENTIOMETER 2 SHORT CIRCUIT
- ERROR CODE [DLM0KX]
- HST MOTOR SPEED SENSORS OUT OF INPUT SIGNAL RANGE
- ERROR CODE [DLM1KA]
- LEFT HST MOTOR SPEED SENSOR DISCONNECTION
- ERROR CODE [DLM1KB]
- LEFT HST MOTOR SPEED SENSOR: SHORT CIRCUIT
- ERROR CODE [DLM1MA]
- LEFT HST MOTOR SPEED SENSOR: MALFUNCTION
- ERROR CODE [DLM2KA]
- RIGHT HST MOTOR SPEED SENSOR DISCONNECTION
- ERROR CODE [DLM2KB]
- RIGHT HST MOTOR SPEED SENSOR SHORT CIRCUIT
- ERROR CODE [DLM2MA]
- RIGHT HST MOTOR SPEED SENSOR MALFUNCTION
- ERROR CODE [DLM3KA]
- FAN SPEED SENSOR DISCONNECTION
- ERROR CODE [DLM3KB]
- FAN SPEED SENSOR: SHORT CIRCUIT
- ERROR CODE [DN21FS]
- BRAKE PEDAL AND PROXIMITY SWITCH FIXING
- ERROR CODE [DV00KB]
- CAUTION BUZZER SHORT CIRCUIT
- ERROR CODE [DV20KB]
- BACK ALARM BUZZER SHORT CIRCUIT
- ERROR CODE [DW4BKA]
- PARKING BRAKE SOLENOID VALVE DISCONNECTION
- ERROR CODE [DW4BKB]
- PARKING BRAKE SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DW4BKY]
- PARKING BRAKE SOLENOID VALVE SHORTED
- ERROR CODE [DW7BKA]
- FAN REVERSE SOLENOID VALVE DISCONNECTION
- ERROR CODE [DW7BKB]
- FAN REVERSE SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DW7BKY]
- FAN REVERSE SOLENOID VALVE SHORTED
- ERROR CODE [DW7EKA]
- SLOW BRAKE SOLENOID VALVE DISCONNECTION
- ERROR CODE [DW7EKB]
- SLOW BRAKE SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DW7EKY]
- SLOW BRAKE SOLENOID VALVE SHORTED
- ERROR CODE [DWN5KA]
- FAN EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DWN5KB]
- FAN EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DWN5KY]
- FAN EPC SOLENOID VALVE SHORTED
- ERROR CODE [DXA4KA]
- LF HST PUMP EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DXA4KB]
- LF HST PUMP EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DXA4KY]
- LF HST PUMP EPC SOLENOID VALVE SHORTED
- ERROR CODE [DXA5KA]
- LR HST PUMP EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DXA5KB]
- LR HST PUMP EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DXA5KY]
- LR HST PUMP EPC SOLENOID VALVE SHORTED
- ERROR CODE [DXA6KA]
- RF HST PUMP EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DXA6KB]
- RF HST PUMP EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DXA6KY]
- RF HST PUMP EPC SOLENOID VALVE SHORTED
- ERROR CODE [DXA7KA]
- RR HST PUMP EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DXA7KB]
- RR HST PUMP EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DXA7KY]
- RR HST PUMP EPC SOLENOID VALVE SHORTED
- ERROR CODE [DXK1KA]
- LEFT HST MOTOR EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DXK1KB]
- LEFT HST MOTOR EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DXK1KY]
- LEFT HST MOTOR EPC SOLENOID VALVE SHORTED
- ERROR CODE [DXK2KA]
- RIGHT HST MOTOR EPC SOLENOID VALVE DISCONNECTION
- ERROR CODE [DXK2KB]
- RIGHT HST MOTOR EPC SOLENOID VALVE SHORT CIRCUIT
- ERROR CODE [DXK2KY]
- RIGHT HST MOTOR EPC SOLENOID VALVE SHORTED
Inside this manual
Real pages from this service manual (1,269 pages). Open the sample pages (PDF, 758 KB)
- Specifications, page 357: TESTING AND ADJUSTING
- Troubleshooting, page 680: ERROR CODE [DW4BKA]
- Diagram, page 756: Circuit diagram related to caution buzzer
- Foldout diagram: OTHERS
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the D51EX-22 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
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This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 1,269 pages
Quantity one is the manual described above.
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Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).