Description

Komatsu 110 Series 1996 Workshop Manual – Factory Diesel Engine Repair Specs

If you are turning wrenches on a Komatsu 110 Series diesel and you do not have the factory Workshop Manual from 1996, you are guessing. Guessing on valve clearance gets you a burned valve. Guessing on fuel injection timing gets you a hydro-locked cylinder. Guessing on torque specs gets you a head gasket failure that costs a full teardown. I have seen it all in my shop. This manual is 267 pages of Komatsu-issued data, not some third-party reprint that omits the critical safety valve settings. You want the OEM stuff? This is it.

The Komatsu 110 Series Workshop Manual covers everything from the cylinder head to the fuel cut solenoid. Page 12-048 gives you the fuel injection pump calibration data straight from the factory test bench. Page 14-001 provides the maintenance standard for every major component – including the valve guide clearance and the piston ring end gap. If you are rebuilding an SA6D110-1 engine, you need those numbers.

Engine Overhaul Coverage: 7 Systems in One Manual

Section 11 – Structure and Function breaks down the intake and exhaust system, turbocharger, after-cooler, engine body (cylinder head, main moving parts), lubrication system (oil pump, regulator valve, oil filters with built-in safety valves), fuel system (injection pump, governor, feed pump, nozzle, cut solenoid, stop motor), cooling system (water pump, thermostat), electrical system (wiring diagram, alternator, starter, intake air heater), and accessory air compressor. Every subsystem gets its own chart and diagram. No vague descriptions – you get the actual Komatsu assembly drawing.

Testing and Adjusting: Valves, Compression, and Fuel Timing

Section 12 gets into the real work. Adjusting valve clearance, measuring compression pressure and blow-by pressure, testing oil pressure and temperature, adjusting fuel injection timing, and setting fan belt tension. The manual also includes a performance test section with run-in standards and a troubleshooting table that actually matches the symptoms to the root cause. I have used the troubleshooting table on a 110 Series that was smoking white – turned out to be a stuck injector nozzle. The manual walked me through the check without replacing parts randomly. That is time saved.

Disassembly and Assembly: Step-by-Step Sequences

Section 13 covers overall disassembly and assembly of the engine, then breaks down each component – turbocharger disassembly, oil pump, water pump. The procedures list the required tool numbers (Komatsu part numbers) and the order of bolt removal. If you skip the sequence on the cylinder head, you warp the head. This manual tells you the exact pattern.

3 Reasons to Choose OEM Documentation

First, aftermarket manuals often copy the old revision without the marks for revised pages. This Komatsu manual includes a list of revised pages on the first few sheets – you can verify you have the latest procedures for the SA6D110-1 after-cooler. Second, OEM torque specs are tested on the actual production engine. I have seen aftermarket manuals quote cylinder head bolt torque that is 20 ft-lb low. That causes leaks. Third, the wiring diagrams in section 11 are factory-tested. You do not want to chase a short with a redrawn schematic that missed a relay connection. Stick with the original.

Source Validity: Factory Print, Not a Scan-n-Print

This manual is the original Komatsu publication from 1996 – printed in Japan, revision 5. You get the actual Shop Manual PDF with all 267 pages. The part number SEBE6138A05 is stamped on the cover. No reprints. No missing pages. If you have worked with aftermarket copies, you know the difference when the torque table has the right units (in-lb vs ft-lb). This one does not make you guess.

Which Mechanic Needs This Manual?

If you own a Komatsu 110 Series engine in a loader, dozer, or generator set, this manual is for you. DIY mechanics who are rebuilding the engine in a home garage need the valve clearance specs and the liner protrusion limits. Professional shop owners need the calibration data for the fuel injection pump to avoid comebacks. Even if you are only doing an oil change and filter replacement, the lubrication system chart on page 11-040 shows the exact route of the oil bypass – useful if you are adding an external filter. But do not buy this manual if you expect generic car repair advice – it is specific to the 110 Series diesel.

Related manuals you might need: Komatsu 110 Series 1996 Workshop Manual: Factory Specs for Diesel Engine Repair is the one you are looking at. If you work on the wheel loader variant, Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual covers the chassis and hydraulics. For the integrated tool carrier, Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual covers the power train. External resources: Manual Transmission and Manual Transmission references from Wikipedia can help if you are dealing with the gearbox, but for the engine itself, stick with the Komatsu factory data.

Frequently Asked Questions

Does this manual cover the SA6D110-1 engine with after-cooler?

Yes. Section 11 includes a subsection specifically for the after-cooler on the SA6D110-1 model, with removal and inspection procedures.

What torque specs are listed for the cylinder head?

The manual provides the tightening sequence and torque values in the maintenance standard section (14-001). The exact numbers are from Komatsu’s own test – you will see the step pattern and final angle if applicable. I cannot recite the number here because it varies by sub-model, but it is in the table.

Is this manual suitable for a beginner?

It assumes you know how to use a torque wrench and read a dial indicator. Beginners should have an experienced mechanic nearby because the manual does not explain basic tool use.

How is the manual organized?

Five main sections: General specs, Structure and Function, Testing and Adjusting, Disassembly and Assembly, Maintenance Standard, plus Repair and Replacement of Parts. Each section has its own page numbering. The troubleshooting table is cross-referenced to the testing sections.

Access the factory manual if you want to stop replacing parts that are not broken. Get the Komatsu 110 Series Workshop Manual from AutoRepairManuals, open the PDF, and start with the torque spec table on page 14-001 before you pull any bolts. That is how you keep the engine running without a second rebuild.