Description

Komatsu D85EX-15E0, D85PX-15E0 Workshop Manual

I’ve seen techs lose a whole day because they grabbed a generic torque chart from the internet and snapped a head bolt on a Komatsu D85EX-15E0. That bolt costs money. The downtime costs more. This Komatsu D85EX-15E0, D85PX-15E0 Workshop Manual is 1136 pages of factory data – not a third-party reprint, not a condensed aftermarket hack. It’s the binder that Komatsu intended for the shop floor. If you’re working on either the D85EX-15E0 or D85PX-15E0, you need the correct torque values, hydraulic pressures, and electrical pinouts. This has them all, in Imperial units where applicable.

Engine and Cooling System: Factory Procedures

The manual starts with the engine mount and cooling system – both areas where a mistake can cost you a radiator or a fan motor. It covers the cooling fan pump and motor in detail, including fluid capacities and belt tension specs. No guesses. You get the exact procedure for adjusting the alternator belt tension and the air conditioner compressor belt tension. These are the steps that keep a dozer running in a Texas summer.

Two Power Train Sections, One Complete Picture

Power Train, Part 1 and Part 2 break down the HSS system, the torque converter, the transmission, and the final drive. The manual gives you the hydraulic piping drawings for the power train – so you can trace a line without flipping through five different schematics. It also includes the Manual Transmission control section, but note that this bulldozer uses a powershift transmission with ECMV clutch control. The main relief valve and torque converter relief valve are covered with their adjustment specs. If you run across a brake valve issue, that’s in Power Train, Part 2 along with the bevel gear shaft and final drive disassembly.

Torque Converter and PTO: What the Manual Shows

The torque converter and PTO section includes the removal and installation steps, along with the standard tightening torque table from the foreword. That table lists bolt sizes and torque values for metric hardware – the same table you should be using for every fastener on the machine. Don’t rely on a general chart; this one is specific to Komatsu architecture. I’ve written [DATA NEEDED] in my own notes for aftermarket equivalents, but the factory spec is right here.

Does the Manual Cover the Hydraulic System?

Three full sections – Hydraulic System, Part 1, 2, and 3. That includes the work equipment hydraulic piping diagram, the PPC valve, the quick drop valve, the accumulator, and the electric lever for steering. If you’re chasing a drift in the blade or ripper, the manual walks you through checking the piston valve and measuring internal leakage of the work equipment cylinder. It also shows you how to bleed air from the work equipment – a step that many skip and then wonder why the blade drops overnight. The self-pressure reducing valve and oil cooler bypass valve are covered too.

Undercarriage and Frame Maintenance Standards

Track frames, idlers, rollers, sprockets, and track shoes – all with wear limits and adjustment procedures. The manual includes the method for inspecting wear of the sprocket and adjusting track shoe tension. For suspension and main frame, you get the bolt torque sequences and clearances. If you’re replacing a track roller or carrier roller, the manual lists the needed pullers and presses. Tool list is right there in the Testing and Adjusting section.

Testing and Adjusting – 30 Sections of Real Procedures

This part of the Komatsu D85EX-15E0, D85PX-15E0 Workshop Manual is where most techs live. It covers measuring engine speed, compression pressure, blow-by pressure, and exhaust temperature. It also details the handling of the fuel system – releasing residual pressure, testing fuel pressure, and bleeding air from the fuel circuit. There’s a specific procedure for handling “no injection cranking operation” and reduced cylinder mode. The manual even includes the emergency escape method when the power train has trouble. For the electrical system, it explains the CRI engine control system, the PLAM command control system, and the KOMTRAX terminal. If you need to adjust the brake pedal or parking brake lever, it’s in here. All torque specs for the testing equipment are referenced from the standard value table in section 20.

Source Validity: OEM, Not Aftermarket

This is a direct scan of the Komatsu factory shop manual – Form Number SEN00060-02 and related forms. The index lists the exact composition of the manual, including the binder label and tabs. There are no reprints or third-party modifications. If you’ve ever tried to use an aftermarket manual and found a wrong wiring diagram, you know the value of this. The wiring codes (how to read electric wire code) and the push-pull coupler disassembly method are straight from Komatsu’s engineering. For related machines, check out Komatsu D85EX-15E0 D85PX-15E0 Operation Manual for day-to-day operation, or Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual for a loader. Also, Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual covers a different series but shares hydraulic architecture.

Who Should Use This Manual

Home garage enthusiasts who are rebuilding a D85EX-15E0 final drive need this to get the bearing preload right. Professional mechanics who bill by the hour will save that hour on the first job because they won’t be hunting for the pressure specs. Workshop owners should have a copy for every tech – liability drops when everyone uses the same factory procedure. Beginners should read the Safety Notice and Handling Electric Equipment sections before touching anything. This manual assumes you have basic tools, but it lists specific special tools – for example, the tools for testing and adjusting are summarized in the first part of Testing and Adjusting. If you don’t have a timing light that can handle the engine speed measurement, the manual tells you what to use.

What serial numbers does this manual cover?

D85EX- 11001 and up; D85PX- 1201 and up.

Does this include the electrical system diagrams?

Yes. Section 10 covers the monitor system, monitor panel, engine control, CRI engine control system, PLAM command control system, and KOMTRAX terminal system. It also includes sensor locations and wire code readings. There is a full troubleshooting section by failure code (Parts 1-4) and an E-mode troubleshooting for the electrical system. The wiring diagrams are factory-original – you can trace the harness without a multimeter calibration check.

Can I use this for the D85EX-15E0 with serial below 11001?

No. The manual specifically starts at serial 11001. Earlier machines may have different torque converter or HSS calibrations.

Is this a PDF format or a physical book?

PDF format. You get the complete 1136-page file with searchable bookmarks for every section.

If you’re ready to put factory data on your bench instead of guesswork, access the factory manual now.