Description

Yanmar 4TNV106T 2010 Parts Catalog

You’ve got a 4TNV106T on the stand with a blown injection pump, and the aftermarket catalog you’re using shows three different part numbers – none of which match the old pump. That’s when you waste a day cross-referencing supersessions, and still end up ordering the wrong flange. I’ve been there. A factory parts catalog kills that guesswork. This 48-page OEM catalog from Yanmar is the only document that gives you the exact breakdowns, compatibility codes, and serial number cutoffs for every component on that engine. It doesn’t tell you how to fix it – it tells you what to order so you can fix it.

Fuel Injection Pump Breakdown (Fig 29)

Page 1 covers the fuel injection pump with boost compensator – Fig 29. You get the full part number breakdown for the pump assembly (59995-51390) and each sub-component: screws (26062-06012), washers (28662-06016), O-rings (12270-51050, 12270-51060), and the retainer (129470-51060). The catalog lists the quantity per engine (QTY) and which variant – standard flow or high flow – each part fits. If you’re rebuilding or swapping a pump, you need these numbers. Aftermarket catalogs will substitute a generic O-ring kit that may not have the correct cross-section for the boost compensator seal. Don’t risk it.

Compatibility Codes: N, R, K, and What They Mean

The catalog uses a system of compatibility symbols to tell you if a new part replaces an old one without modification. N means new part is interchangeable with old (one-way), R means reverse compatibility, K means a single-number change. Page 3 explains the full legend. If you ignore these codes and order based only on model name, you’ll end up with a fuel injection pump flange that has a different bolt pattern. I’ve seen it happen. Read the codes, check your engine serial number (given in the header of each section), and order the right iteration. This catalog marks the engine serial number cutoff (e.g., E/#00185) so you know exactly when a part changed.

Engine Serial Number Cross-Reference

Every major assembly – block, head, injection pump – lists the applicable engine serial number range. The catalog uses columns C, E, D, F, K to indicate which variant (e.g., A-4JH-DT, E-4JH-DTZ) applies. If you have a 4TNV106T-XTBL1 with serial number 21500628 or later, the fuel injection pump listed on page 1 is the one you need. No guessing. Yanmar factory catalogs are the only source that ties part numbers to specific serial breaks. This is critical when dealing with high-flow variants common in construction equipment like the P-TL150ECB.

3 Reasons to Choose OEM Documentation

First, aftermarket parts catalogs often merge multiple revisions into one line entry, omitting the serial number breaks. You order a pump that fits a 2009 engine, but your 2010 unit has a different drive gear. Second, OEM catalogs include the “level” notation (parent-child relationships) so you know if a component is a sub-assembly of a larger part. The level column on page 2 shows that the O-ring and retainer are subordinate to the pump assembly – order the set. Third, factory documents are printed under Yanmar’s authorization, not copied from a third-party database. The OCR excerpt shows the Japanese headers and English descriptions side by side – no translation errors, no ambiguous supersessions.

How to Read the Parts Catalog (Pages 0-1)

Don’t skip the reference pages. Page 0-1 explains the format: heading numbers, level indicators, change marks, and compatibility codes. It also notes that some parts shown in illustrations may not be standard equipment. For example, the boost compensator on the injection pump might be an optional feature depending on your engine’s specification. The catalog flags that with remarks. If you’re ordering a replacement pump, check the remarks column for “OPTIONAL PART” or “BOOSTER COMPENSATOR TYPE.” This saves you from buying a pump that’s missing a required component. Follow the instructions, and you won’t have to return a $1,200 pump.

Who Needs This Catalog

If you’re a home garage enthusiast rebuilding a 4TNV106T from a skid steer or mini excavator, you need exact part numbers to order from your dealer or online. If you run a small shop and don’t have access to Yanmar’s dealer portal, this PDF is your only reliable source. Beginners will appreciate the exploded views – you see where each washer and O-ring goes before you tear it apart. Professional technicians will use the serial number cutoffs to avoid ordering the wrong revision. There’s nothing here for the guy who thinks “I’ll just match it up at the parts store.” That approach costs double in downtime.

Source Validity: Factory OEM vs. Aftermarket

This is a genuine Yanmar factory document – published 2010, 48 pages, original file name YANMAR_4TNV106T_2010_Parts_Catalog_en-ja-25414017980.pdf. The copyright belongs to Yanmar. Every part number is sourced from Yanmar’s internal parts system. Compare that to a compilation DVD that reprints diagrams from unknown sources and mixes in generic part numbers. I’ve seen aftermarket catalogs list a fuel injection pump that fits twenty different engines, no mention of boost compensator or serial number break. That’s a waste of time. This catalog gives you the truth: specific numbers, specific applications. For related manuals, check the Yanmar 3TNV82A, 3TNV84, 3TNV88, 4TNV84, 4TNV88 2009 Service Manual if you need repair procedures alongside parts identification. The Ammann Yanmar B12 B17 Parts Catalog covers similar construction equipment engines, and the Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs is another example of the quality you get from factory documents.

Frequently Asked Questions

Does this catalog include torque specs for the fuel injection pump?

No. This is a parts catalog – it lists part numbers, quantities, and compatibility data only. For torque specs, you need the corresponding Yanmar service manual.

How do I know if the part I’m looking at fits my engine? The catalog has codes like A-4JH-DT and E-4JH-DTZ. Those are the engine variant codes. Match the code in the header of your engine section (e.g., 4TNV106T-XTBL1 for high flow) to the column on each parts list. The column labeled C, E, D, F, K shows which variant uses that part. If your engine serial falls within the range shown in parentheses (like A-E/#00185), then the part applies. If you’re unsure, check the remarks column for notes about optional or special-order parts. The catalog also includes a compatibility symbol – N means the new part replaces the old one without issues. If you see a Z or W, that part is discontinued or not interchangeable. Cross-check with your existing part if possible.

This catalog will save you the headache of ordering three fuel injection pumps before you get the right one. The factory part numbers, serial break data, and compatibility codes are right there on the page. Access the Factory Manual and keep it on your tablet or printed out next to the engine stand.

For broader context on why OEM documentation matters, see the Automotive Industry Overview and the Automotive Industry Overview for standards in parts interchangeability. But honestly, the only place you need to look is this catalog.