Description

Yanmar T150CEAC 2012 Parts Catalog – Factory OEM Part Numbers for 4TNV88-QTBC Engine

If you’ve ever ordered a part for a Yanmar T150CEAC and got the wrong one, you know the pain. The machine sits. Your wallet takes a hit. And that third-party parts list you used? It missed a revision code. Here’s the fix: the OEM 2012 Yanmar T150CEAC 2012 Parts Catalog from the factory. 42 pages of real part numbers, not guesses. This is the same booklet the dealer pulls from when you call in a VIN. No translations missing, no compatibility notes skipped.

42 Pages of OEM Part Breakdowns

Forty-two pages might sound thin, but every page is packed with exploded diagrams and tables. The manual covers the engine assembly for the 4TNV88-QTBC used in the T150SEAC (note: the T150CEAC is the compact excavator version). You get 17 figure groups starting with Cylinder Block (Fig. 1) through Gasket Set (Fig. 17). Plus a separate Fig. 29 for the Fuel Injection Pump with boost compensator. Each figure shows the item, part number, description, quantity, and compatibility codes. Need the screw for the injection pump? Ref. 1-3 on page 1 shows part number 29602-00156 – a M6x10 screw. That level of detail keeps your parts order right the first time.

Engine Systems Covered: From Cylinder Block to Fuel Injection Pump

The table of contents lists every subsystem you’ll need to pull apart and reassemble. Cylinder Block, Gear Housing, Flywheel Housing & Oil Sump, Cylinder Head & Bonnet, Suction Manifold & Air Cleaner, Exhaust Manifold & Silencer, Camshaft & Driving Gear, Crankshaft & Piston, Lube Oil System, Cooling Water System, Fuel Injection Pump, Governor, Fuel Injection Valve, Fuel Line, Starting Motor, Generator, and Gasket Set. That’s 17 major assemblies. If you’re rebuilding the top end or swapping injectors, you’ve got the part numbers in your hand.

Why a Factory Parts Catalog Beats Aftermarket Lists

Aftermarket parts catalogs often copy the first edition and miss every revision. Yanmar issued this catalog in 2012, so it includes all part changes up to that date. The catalog uses compatibility codes – N, Q, S, R, W, Z, F, K – to tell you exactly which part fits which serial number range. For example, the fuel injection pump assembly (part 759995-51390) has different versions for engine serial numbers before and after E/#00155. The aftermarket list lumps them together. This catalog gives you the column (A through F) so you order the right pump for your machine’s build date.

Understanding the Compatibility Codes: N, Q, S, R, W, Z, F, K

Page 2 of the manual explains the eight compatibility symbols. N means the new part replaces the old and is backward compatible; Q means forward compatible only; S means full interchangeability; R means no interchangeability; W means newly added; Z means discontinued; F means no interchange as a single part but compatible as a set; K means only quantity changed. When you see a code next to a part number, you know whether it fits your engine’s serial number or if you need an update. This is why you never trust a copied PDF that strips these codes.

Does This Manual Cover Your Engine Serial Number?

Look at the header of each figure – you’ll see columns A through F with specific engine serial number ranges. For the fuel injection pump, column A covers the 4JH-01T engine; column B applies to E/#00155 and earlier; column C for E/#00200 onward. If your engine serial number falls in between, you cross-reference the column. The manual includes a compatibility matrix so you don’t order a pump that won’t mount. That’s the difference between a parts catalog and a parts bible.

Can I use this parts catalog to order parts online?

Yes. But verify the part number with your local Yanmar dealer before hitting Submit. The catalog gives you the correct OEM number; dealers can confirm availability and supersessions.

What is the difference between this OEM catalog and a third-party PDF?

Third-party PDFs often strip the compatibility codes, revision marks, and the “How to Read this Parts Catalog” instructions that explain the N, Q, S system. Without those codes, you risk ordering the wrong part when a small revision was made. This OEM catalog includes all that detail – 42 pages of unaltered factory data, printed in 2012 with the latest part updates. It also shows the original Japanese and English side-by-side, so nothing gets lost in translation.

Before you waste another afternoon chasing the wrong piston ring or injector seal, get the right spec. Access the Factory Manual and keep it on your tablet or printed out. Pair it with Ammann Yanmar B12 B17 Parts Catalog if you work on compact rollers, or Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs for older models. Need a bigger machine? Check Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM. For background on how OEM documentation protects your repair, see Automotive Industry Overview and Automotive Industry Overview.