Komatsu D155A-6 Bulldozer Operation & Maintenance Manual PDF – Serial 85025 & Up

Description

Komatsu D155A-6 Bulldozer Operation & Maintenance Manual

This Komatsu D155A-6 Bulldozer Operation & Maintenance Manual is the complete document issued by Komatsu for D155A-6 machines starting from serial number 85025 and up. Released under form number PEN00319-00 in June 2008, the manual brings every daily check, scheduled service task, operating procedure, safety rule, and troubleshooting chart for the D155A-6 into one clear, indexed reference. It is the document Komatsu expects the operator and service personnel to work from, and it is the same reference supplied with the machine when new.

The D155A-6 is a heavy tracked bulldozer powered by the Komatsu SAA6D140E-5 diesel engine, and the operation and maintenance manual is written specifically around that machine – its blade and ripper attachments, its Komatsu machine monitor display, its power train, its undercarriage, and its hydraulic system. Rather than a generic crawler-tractor guide, this is a machine-specific manual with serial-number applicability and model-specific procedures throughout.

File Details

• Manual type: Operation & Maintenance Manual (OMM)
• Brand: Komatsu
• Model: D155A-6 Bulldozer
• Serial numbers: 85025 and up
• Document number: PEN00319-00
• Publication date: June 2008
• Language: English
• Page count: 343 pages
• File format: PDF

Chapters Covered

• Before Reading This Manual – how to use the manual, unit conventions, where to keep the manual, table to enter serial number and distributor
• Safety Information – signal word definitions, safety alert symbol, and the safety message system used throughout the book
• Introduction – use of the D155A-6, front/rear and left/right orientation, and visibility diagrams from the operator’s seat including proximity visibility and 12 m circumference visibility
• Safety – safety labels and their positions, general precautions common to operation and maintenance, fire prevention, precautions when getting on or off the machine, protective structures (ROPS/FOPS), unauthorized modification, precautions related to attachments and options, precautions when running the engine inside a building, and precautions for operation, towing, transportation, and maintenance
• Operation – general view of the machine, general view of controls and gauges, machine monitor, monitor switches, switches, control levers and pedals, starting engine, operations and checks after starting engine, moving the machine, shifting between forward and reverse, shifting gear, steering, stopping, parking, work possible using the bulldozer (dozing, smoothing, cutting into hard or frozen ground, ditching, felling trees, removing stumps, pusher operations), ripper operation, adjusting posture of work equipment, transportation, cold weather operation, long-term storage, and troubleshooting
• Maintenance – guides to maintenance, outlines of service, wear parts list, recommended fuel, coolant, and lubricant, standard tightening torques for bolts and nuts, periodic replacement of safety critical parts, maintenance schedule chart, and the full service procedures section (check before starting, initial 250 hours, every 250 hours, 500 hours, 1000 hours, 2000 hours, 4000 hours, and 8000 hours service)
• Specifications – operating weight, blade unit weight, ripper unit weight, engine name and horsepower, overall length, height and width, and forward/reverse travel speeds
• Attachments and Options – general precautions, introduction of attachments and options, headrest handling, procedure for selecting a ripper point, and handling of machines equipped with KOMTRAX
• Index – full alphabetical index for fast lookups

The Komatsu D155A-6 Bulldozer Operation & Maintenance Manual gives a technician or operator more than just a list of service intervals. Because it is the actual factory operation and maintenance document, it places the correct specifications, torque values, fluid capacities, adjustment procedures, and inspection criteria alongside the operating instructions they belong to. Every section is written for the specific D155A-6 configuration, so torque charts, coolant mix ratios, hydraulic pressures, track tension figures, and pivot bearing checks are all given for this machine rather than a generic crawler. Combined, the manual walks from the first pre-start walk-around check through every scheduled service interval, then into the ripping and dozing procedures that the D155A-6 was built for, then on to troubleshooting charts and electrical or hydraulic system references.

Whether the task is setting up a maintenance schedule, performing a 500-hour or 2000-hour service, diagnosing a warning on the machine monitor, adjusting blade tilt or brace length, reading track wear limits, bleeding the fuel circuit, or working out the right cutting angle for a ripping job, the D155A-6 OMM has the answer written for the machine in hand.

Systems and Service Areas Covered

The D155A-6 manual is organized so that the sections a technician needs during a service are grouped together. Engine service covers the oil pan, engine oil filter cartridge, fuel pre-filter, fuel main filter, corrosion resistor, electrical intake air heater, alternator and starting motor, water pump, vibration damper, and engine valve clearance. Power train service covers the power train case, strainers, power train oil filter element, final drive cases, damper case, universal joint, and pilot filter element. Undercarriage service covers track tension, track shoe bolts, idler clearance, undercarriage oil checks, link pitch measurement, and grouser height measurement. Hydraulic and work equipment service covers the hydraulic tank, hydraulic oil filter element, blade and ripper cylinders, blade tilt adjustment, brace adjustment, shim adjustment, blade edge angle adjustment, angling adjustment, and blade edge wear limits. Electrical and cabin service covers the fuse box, circuit breaker, main power supply circuit breaker, monitor switches, air conditioner controls and filters, wiper blade replacement, door hardware, and seat belt replacement.

Operational Guidance Unique to the D155A-6

The operation section is machine-specific and includes blade control and ripper control lever positions, joystick (PCCS lever) steering, direction and gear shift, gear shift mode selection (automatic shift for dozing and manual shift for ripping), preset speed range setup at neutral, gear shifting while traveling, steering, stopping, parking on slopes, working in water, working on slopes, cold weather operation, and long-term storage. The ripper section explains the correct digging angle for most conditions, how to dig up boulders or rockbed with the tilt cylinder, how to rip at cliff edges and on slope faces, and how to select a ripper point for different rock conditions. The bulldozer work section covers dozing, smoothing, cutting into hard or frozen ground, ditching, felling trees, removing stumps, and pusher operations.

What This Manual Enables You to Do

With this Komatsu D155A-6 Bulldozer Operation & Maintenance Manual on hand, an owner, operator, or service technician can:

• Follow the correct procedure for every daily pre-start check – coolant level, fuel level, engine oil level, power train case oil, hydraulic tank oil, dust indicator, electric wiring, lamps, horn, and backup alarm – in the exact order Komatsu specifies.
• Carry out scheduled service at every interval from the initial 250-hour service all the way to the 8000-hour service, including the periodic replacement of safety critical parts such as fuel hoses, high-pressure piping clamps, the accumulator, and the seat belt.
• Adjust and inspect undercarriage components correctly – track tension, idler clearance, track shoe bolts, cutting edges and end bits – using the wear limits and torque values printed in the manual.
• Operate the D155A-6’s blade and ripper safely and productively, from basic dozing to slope excavation, cutting into hard or frozen ground, felling trees, removing stumps, and ripping with the correct shank angle.
• Diagnose faults using the troubleshooting charts for the electrical system, electronic control system, chassis, and engine, and interpret user codes and warning screens on the machine monitor.
• Transport the machine correctly, from loading and unloading on ramps to securing it on a trailer and lifting it safely with a crane.

Why This Manual Matters

Service procedures done to the wrong torque, wrong fluid, wrong interval, or wrong clearance shorten the life of the machine and can create safety hazards. The D155A-6 is a heavy tracked machine with high-pressure hydraulics, a high-pressure fuel system, a charged accumulator, and a recoil spring assembly – all of which need the manual’s exact procedures and safety instructions. Having the correct manual for the correct machine removes guesswork and lets a shop or owner work to Komatsu’s own figures rather than memory or generic advice.

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Instant PDF Delivery

The Komatsu D155A-6 Bulldozer Operation & Maintenance Manual is delivered as an instant PDF download. There is no shipping, no waiting, and no physical book to lose in the workshop. The file opens on any device – workshop computer, laptop, tablet, or phone – and can be printed page by page or in full when a paper copy is more convenient at the machine. Whether you are servicing a D155A-6 in the yard or planning maintenance from the office, the manual is available the moment payment is complete.