Description

Komatsu 114 SERIES 2010 Workshop Manual

I’ve been wrenching for 28 years, and I’ve seen what happens when a guy trusts a third‑party reprint for a diesel rebuild. You pull the head, install new liners, torque everything to a number that “looks right,” and three hours later you’re pulling the oil pan to find a cracked liner. This Komatsu 114 SERIES 2010 Workshop Manual is what you need if you want the job done to factory spec the first time. It’s the same binder Komatsu shipped to dealerships – 442 pages of actual OEM procedures, not some condensed PDF that skips half the steps.

Let’s talk about what’s inside. The manual splits into five major sections: General, Structure and Function, Testing and Adjusting, Disassembly and Assembly, and Repair and Replacement. That’s the kind of organization that saves your Saturday. You don’t flip through 400 pages looking for a torque value – you go straight to the standard value table on page 12‑140 and get your number. No guesswork.

01 GENERAL: Engine Specs and Performance Curves

This section gives you the Engine serial number ranges, weight tables, and performance curves. If you’re swapping a 114 SERIES into a piece of equipment, you need the overall drawing and the applicable machine list. Everything from the air intake device to the starting motor is covered in section 11. But section 01 is where you start – it has the baseline data for every test you’ll run later.

11 STRUCTURE AND FUNCTION: Cylinder Head, Valve Mechanism, and Fuel System

Section 11 runs from page 11‑1 onward and it’s dense. It covers the Cylinder head, cylinder block, cylinder liner, main circulation parts, crank shaft, piston assemblies, connecting rods, vibration damper, and the entire timing gear portion. The Camshaft timing pin procedure is laid out in clear steps – you’ll know exactly where to insert the lock pin to avoid bending a valve on a fresh rebuild. The Valve mechanism section shows rocker‑arm shaft, push rod, tappet, and the valve guide specifications. I’ve rebuilt enough six‑cylinder heads to tell you: if you skip the valve clearance adjustment procedure in this book, you’ll be pulling the rocker cover again. The book covers adjusting a 6‑cylinder engine in section 12, but the structure drawings in section 11 let you see exactly how the valve train interacts with the camshaft timing. That’s the kind of detail that keeps a pushrod from snapping at 2,000 RPM.

12 TESTING AND ADJUSTING: What You Need to Know Before You Torque

This section is the heart of the manual. It opens with a special tool list – and I mean a real list, not a suggestion. Special tools for intake/exhaust, cylinder head, engine, fuel system, accessory components, electrical components, and engine performance test. You want to measure turbocharger rotor axial and radial play? There’s a procedure. Testing the wastegate valve, capsule, and actuator? All spelled out. The troubleshooting section alone is worth the price. You get condition‑based troubleshooting: starting performance poor, engine does not start (with sub‑categories: engine doesn’t turn, turns but no exhaust smoke, smoke comes out), defective actuation of lubricating system, high pressure, low pressure, oil dilution, cooling water in oil, fuel in oil. Every failure mode has a test sequence. That’s not in a Chilton book.

Special Tool List – Don’t Start Without These

Page 12‑1 lists special tools for intake and exhaust system, cylinder head system, engine, fuel system, accessory components, electrical component, and engine performance test. If you’re doing a fuel injection pump calibration, you need the lock pin for the timing of the fuel injection pump. The manual tells you how to adjust timing, bleed air from the low‑pressure circuit and high‑pressure circuit, and test the high‑pressure fuel piping. I’ve seen a shop blow a line because they used a generic torque spec. Don’t be that guy.

Why the OEM Torque Specs Matter

Aftermarket manuals reprint numbers from a decade ago and they’re often wrong. This 2010 Workshop Manual is a KOMATSU publication with the revision marks printed right on the page. You can see which pages are newly added, replaced, or deleted – the “LIST OF REVISED PAGES” table at the front gives you every revision number. That means the torque values for the cylinder head bolts, the connecting rod cap bolts, and the main bearing cap bolts are the latest factory release. If you’re building a 114 SERIES for a Manual Transmission application, you need those numbers to be dead on. Use this manual, and you’ll have the camshaft timing pin location backed up by a factory drawing.

Audience Fit: Who Should Buy This Manual

If you’re a DIY mechanic with a 114 SERIES diesel in a loader, excavator, or generator set, this is the book. Beginners can follow the valve clearance adjustment procedure – it tells you the order of cylinders for a 6‑cylinder engine. Professionals will appreciate the fuel injection pump calibration data and the running‑in standard. Workshop owners: put this in the hands of your techs and stop losing billable hours to wrong specs. It’s also a perfect companion for Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual if you need wheel loader systems. For larger equipment, check Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual or the Komatsu PW95R-2 Workshop Manual – 520 Pages of Factory Specs.

FAQ

Does this manual cover the fuel injection pump calibration?

Yes. Section 12 has a dedicated subsection “FUEL INJECTION PUMP CALIBRATION DATA.” It includes the timing lock pin procedure for the fuel injection pump, plus testing the fuel feed pump, fuel cut‑off solenoid adjustment, and the high‑pressure fuel piping test. You get the full OEM calibration specs.

Can I use this for a 4‑cylinder 114 SERIES engine?

No. This manual covers the 6‑cylinder configuration only. The valve adjustment procedure specifies “ADJUSTING 6‑CYLINDER ENGINE.” For 4‑cylinder variants you need a different manual.

You want the job done right the first time? Access the Factory Manual and get the specs Komatsu printed for their own shops.