Komatsu D155A-6 Dozer Bulldozer Service Repair Workshop Manual (SN: 85001 and up)

BULLDOZER SEN02854-10 D155A -6 SERIAL NUMBERS 85001 and up

D155A-6 1 SEN02856-10 BULLDOZER 1SHOP MANUAL D155A-6 Machine model Serial number D155A-6 85001 and up 00 Index and foreword 1 Index Composition of shop manual .......................................................................................................................... 2 Table of contents ............................................................................................................................................. 4

SEN02856-10 00 Index and foreword 2 D155A-6 Composition of shop manual 1 The contents of this shop manual are shown together with Form No. in a list. Note 1: Always keep the latest version of this manual in accordance with this list and utilize accordingly. The marks shown to the right of Form No. denote the following: Q: New issue (to be filed additionally) q: Revision (to be replaced for each Form No.) Note 2: This shop manual can be supplied for each Form No. Note 3: To file this shop manual in the special binder for management, handle it as follows: • Place a divider on the top of each section in the file after matching the Tub No. with No. indicated next to each Section Name shown in the table below: • File overview and other materials in sections in the order shown below and utilize them accordingly. Section Title Form Number Shop Manual, contents binder, binder label and tabs SEN02854-10 00 Index and foreword SEN02855-10 Index SEN02856-10 q Foreword and general information SEN02857-03 01 Specification SEN02858-02 Specification and technical data SEN02859-02 10 Structure, function and maintenance standard SEN02860-03 Engine and cooling system SEN02861-01 Power train, Part 1 SEN02862-01 Power train, Part 2 SEN02863-00 Undercarriage and frame SEN02864-00 Hydraulic system SEN02865-02 Work equipment SEN02866-00 Cab and its attachments SEN02867-00 Electrical system SEN02868-02 20 Standard value table SEN02869-01 Standard service value table SEN03199-01 30 Testing and adjusting SEN02870-06 Testing and adjusting, Part 1 SEN03200-04 q Testing and adjusting, Part 2 SEN03201-02 Testing and adjusting, Part 3 SEN03202-03 Testing and adjusting, Part 4 SEN03203-00 40 Troubleshooting SEN02871-05 Failure code table and fuse locations SEN03204-02 General information on troubleshooting SEN03205-02 Troubleshooting by failure and error codes, Part 1 SEN03206-01 Troubleshooting by failure and error codes, Part 2 SEN03207-02 Troubleshooting by failure and error codes, Part 3 SEN03208-02 q Troubleshooting by failure and error codes, Part 4 SEN03209-00 Troubleshooting of electrical system (E-mode) SEN03210-01

00 Index and foreword SEN02856-10 D155A-6 3 Troubleshooting of hydraulic and mechanical system (H-mode) SEN03211-01 Troubleshooting of engine (S-mode) SEN03212-01 50 Disassembly and assembly SEN02872-02 General information on disassembly and assembly SEN03366-02 Engine and cooling system SEN03367-02 Power train, Part 1 SEN03368-01 Power train, Part 2 SEN03369-01 Power train, Part 3 SEN03370-00 Undercarriage and frame SEN03371-00 Hydraulic system SEN03372-00 Work equipment SEN03373-00 Cab and its attachments SEN03375-00 Electrical system SEN03376-01 60 Air conditioner SEN04441-00 Structure, function, testing, adjusting, and troubleshooting SEN04442-00 90 Diagrams and drawings SEN02873-04 Hydraulic diagrams and drawings SEN02875-01 Electrical diagrams and drawings SEN02874-03 q

SEN02856-10 00 Index and foreword 4 D155A-6 Table of contents 1 00 Index and foreword Index SEN02856-10 Composition of shop manual ....................................................................................................... 2 Table of contents ......................................................................................................................... 4 Foreword and general information SEN02857-03 Safety notice................................................................................................................................ 2 How to read the shop manual ..................................................................................................... 7 Explanation of terms for maintenance standard .......................................................................... 9 Handling of electric equipment and hydraulic component ........................................................... 11 Handling of connectors newly used for engines .......................................................................... 20 How to read electric wire code .................................................................................................... 23 Precautions when carrying out operation .................................................................................... 26 Method of disassembling and connecting push-pull type coupler ............................................... 29 Standard tightening torque table ................................................................................................. 32 Conversion table ......................................................................................................................... 36 01 Specification Specification and technical data SEN02859-02 Specification dimension drawings ............................................................................................... 2 Specifications .............................................................................................................................. 3 Weight table ................................................................................................................................ 9 Table of fuel, coolant and lubricants ............................................................................................ 12 10 Structure, function and maintenance standard Engine and cooling system SEN02861-01 Radiator, oil cooler....................................................................................................................... 2 Engine mount .............................................................................................................................. 9 Cooling fan pump ........................................................................................................................ 10 Cooling fan motor ........................................................................................................................ 18 Power train, Part 1 SEN02862-01 Power train skeleton .................................................................................................................... 2 Overall drawing of power train unit .............................................................................................. 4 Power train hydraulic piping drawing........................................................................................... 6 Damper, universal joint ................................................................................................................ 8 Torque converter, PTO ................................................................................................................ 10 Transmission ............................................................................................................................... 18 Transmission ECMV.................................................................................................................... 34 Main relief valve and torque converter relief valve ...................................................................... 40 Lubricating oil relief valve ............................................................................................................ 42 Scavenging pump........................................................................................................................ 44 Power train and steering lubrication pump .................................................................................. 46 Power train, Part 2 SEN02863-00 Work equipment pump ................................................................................................................ 2 Work equipment cooler bypass valve .......................................................................................... 15 Steering, brake control ................................................................................................................ 16 Steering unit ................................................................................................................................ 18 Steering control valve .................................................................................................................. 32 Steering clutch ECMV, steering brake ECMV ............................................................................. 34 Parking brake solenoid valve ...................................................................................................... 40 Sudden stop prevention valve ..................................................................................................... 42 Final drive .................................................................................................................................... 45 Sprocket ...................................................................................................................................... 50

Komatsu D155A-6 Dozer Bulldozer Service Repair Workshop Manual (SN: 85001 and up)

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