Description

Komatsu PPU240, PPU241 1978 Parts Catalog

I’ve seen too many guys waste a Saturday because they ordered the wrong part for an old forklift. Komatsu PPU240, PPU241 1978 Parts Catalog is the only way to get the exact OEM part numbers without guessing. 76 pages of factory parts breakdowns for the engine and driveline. No aftermarket translation errors.

This catalog splits the engine into sections you can actually use. Page 12 covers the Camshaft and Valve Mechanism. Need a valve spring or a camshaft bearing? That page gives you the Komatsu part number, quantity per assembly, and an exploded drawing. No wondering if the part store cross-reference is right.

Every section follows the same format. Cylinder block, oil pan, cylinder head, rocker cover – each has its own figure with numbered callouts. The HITACHI carburetor gets two separate sections because serial number breaks matter. Hitachi made changes around serial 20517. The manual accounts for that. So should you.

Cylinder Block and Oil Pan: Page 2 Breakdown

The Cylinder Block and Oil Pan section shows the core of the engine. You get the block itself, the oil pan, gaskets, and all fasteners. Part numbers for the cylinder liner kit are listed. If you’re rebuilding a PPU240 or PPU241, start here. The quantity column tells you exactly how many of each fastener you need per machine.

Camshaft and Valve Mechanism: Factory Specs on Page 12

Page 12 is where you find the camshaft, valve tappets, pushrods, rocker arms, and valves. Each valve has its own part number – intake and exhaust are separate. The manual shows the spring, retainer, and key. If you’re replacing a burnt valve, you order the whole assembly using the figure. No mixing up parts from different years.

Does the Manual Cover Carburetor and Fuel Pump?

Yes. The HITACHI carburetor section starts on page 20 for early serial numbers and page 23-1 for later ones. The fuel pump (17010-K400l) is on page 26 with a detailed breakdown. Fuel pump piping for serial 20518 and later is on page 27-1. If you’re chasing a fuel delivery problem, this catalog gives you the gaskets, diaphragms, and check valves. No more buying a whole carburetor when you only need a float.

3 Reasons You Need OEM Parts Documentation for the PPU240

First, aftermarket catalogs often combine multiple model years into one diagram, hiding design changes. This 1978 Komatsu catalog separates early and late serials. Second, the part numbers are direct from the factory – no cross-reference risk. Third, the “Q'ty” column shows the exact quantity per machine. One missing bolt can cause an oil leak. This manual prevents that.

Get the Right Part Number – Don’t Rely on Part Store Lookups

You know that feeling when you get a box from the parts store and the gasket doesn’t fit? That doesn’t happen when you order using this catalog. The cylinder head gasket, oil pan gasket, valve stem seals – everything has a Komatsu part number. The numerical index at the end of the manual lets you look up any part number across all sections. Handy when you find a stamped number on an old part.

If you want to understand the engine cycle, check out this Wikipedia article on diesel engines. For deeper technical background on diesel combustion, see this Wikipedia article on diesel engine.

Audience Fit: Who Needs This Parts Catalog?

This is for anyone working on a Komatsu PPU240 or PPU241 engine. Forklift owners, small equipment shops, home garage enthusiasts who bought an old lift truck. You need the exact part numbers for the cylinder, crankshaft, camshaft, valve train. If you’re doing a top-end rebuild or a bottom-end overhaul, you’ll buy the right parts the first time. The catalog also covers the clutch housing and exhaust tube – not just the engine.

Source Authenticity: Original OEM, Not a Reprint

This is a genuine 1978 Komatsu Parts Catalog. Printed by Komatsu Forklift Co., Ltd. in Tokyo. The foreword explains how to order parts using model and serial numbers. No aftermarket copy. No scanned third-party pages. The part numbers are the same ones Komatsu dealers use. I’ve caught mistakes in aftermarket parts lists – wrong spring rates, incorrect gasket thickness. Not here. This is the source.

Related manuals you might need:

• FAI 67-80DT Hydraulic Steering Piston Parts List
• Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM
• Komatsu PC14R Parts Catalog – Order Correct Parts Fast

Frequently Asked Questions

How many pages does this manual have?

76 pages.

Does this manual include torque specifications?

No. This is a parts catalog, not a service manual. It lists part numbers and quantities, not torque values. For torque specs you need the corresponding service manual.

Can I use this manual for the PPU241 model?

Yes. The catalog covers both PPU240 and PPU241. The table of contents includes separate sections for variations like serial number breaks. You’ll find the correct parts for your specific machine.

What if I need a part for the carburetor or fuel pump?

This catalog has dedicated sections for the HITACHI carburetor (two versions based on serial number) and the fuel pump on page 26. It includes exploded diagrams and part numbers. You can order the exact gasket, needle valve, or diaphragm without disassembling first. Also covers fuel pump piping for later serial numbers. Just make sure you have your machine’s serial number handy to pick the correct section.

Access the Factory Manual – get the exact OEM part numbers for your Komatsu PPU240 or PPU241. No guesswork. Factory data straight from 1978. Order your parts once and get back to work.