Avtodizel ЯМЗ-238НД3, ЯМЗ-238НД4, ЯМЗ-238НД5 2002 Parts Catalog

Description

You have a YaMZ-238 on the stand and need a new connecting rod. You look up the part number online, find three different listings, and none of them match the casting mark on your rod. That is where this document ends the guessing. The Avtodizel ЯМЗ-238НД3, ЯМЗ-238НД4, ЯМЗ-238НД5 2002 Parts Catalog is the factory-issued parts list for these diesel engines. 112 pages, published by Avtodizel (Yaroslavl Motor Plant) in 2002. Every part number, every illustration, every supersession code came from the OEM. Not a scan of a scan.

Engine Parts Coverage: ЯМЗ-238НД3, ЯМЗ-238НД4, ЯМЗ-238НД5

Each assembly has an exploded diagram with numbered callouts. The catalog groups parts by assembly—cylinder block, cylinder head, fuel system, lubrication, cooling, etc. Next to each number is the part number, description, quantity per engine, and any interchangeability notes. The preface (page 3) explains the coding: letters A, A1 for interchangeable parts; B, V, G for non-interchangeable. That matters when you order a piston for a later serial number.

Using the 2002 Parts Catalog for ЯМЗ-238НД3, ЯМЗ-238НД4, ЯМЗ-238НД5

This is not a service manual. There are no torque specs or repair steps. You use it to identify and order the correct component. If you need a fuel injector for a ЯМЗ-238НД5, you flip to the fuel system section, find the diagram, and read the part number from the callout. Then confirm the interchangeability code. The catalog also lists recommended spare parts in bold type—those are the items Avtodizel expects dealers to stock. For anyone working on AvtoDizel YMZ-236/7601.10 Catalogue of Parts and Units or the Avtodizel YAMZ-236M2/238M2 Parts Catalogue 2000, this is a companion volume.

OEM vs Aftermarket: What This Catalog Gives You

Aftermarket parts catalogs often combine multiple engine families into one generic listing. They miss supersessions, use wrong part numbers, or omit the coatings. This catalog specifies the coating for every fastener: phosphate, zinc, copper, etc. It also lists the exact bolt part numbers (six-digit with coating code). If you order a bolt with the wrong coating, it may corrode or gall. The factory catalog eliminates that risk. Compare that to a Massey-Harris-Ferguson FF 30 GS 1957 Parts Catalog | OEM Fastener Guide—the difference is the same: factory data beats reprints.

The preface on page 3 breaks down the numbering system. Read it first.

Real-World Application: Agricultural and Industrial Machines

These engines go into Kirovets tractors, Promtractor bulldozers, KSM boats, and frontal loaders. If you maintain any of that equipment, this catalog saves you from ordering the wrong main bearing. The diagrams show the exact configuration for each model. For example, the ЯМЗ-238НД3-1 is a specific variant for loaders and graders. The catalog lists its unique parts separately. You also get the engine serial number location (on the block plate) so you can verify which version you have.

Structure of the Catalog: Exploded Diagrams and Part Numbering

Every unit has an illustration. Parts are listed in increasing callout order. The numbering system uses six-digit numbers for fasteners with a dash and coating code. For non-fastener parts, numbers are typically seven digits. The catalog also uses bold text to indicate recommended spares. The preface (page 3) in both Russian and English explains all of this. If you are used to this Wikipedia article on diesel engines for general theory, this catalog gives you the actual part numbers to apply that knowledge. And for further reading on diesel operation, see this Wikipedia article on diesel engines.

Frequently Asked Questions About the ЯМЗ-238 Parts Catalog

Does this catalog include repair procedures or torque specs?

No. This is a parts catalog only. It lists part numbers, quantities, and interchangeability. For service data, you need the corresponding service manual.

Can I use this catalog for other YaMZ-238 variants like the ND6 or ND8?

No. Only the three models listed: ЯМЗ-238НД3, ЯМЗ-238НД4, and ЯМЗ-238НД5. Parts may differ.

Is the manual in English or Russian?

Bilingual. Russian text on the left, English translation on the right for major sections. However, the introduction and some notes are only in Russian. You will need basic context to navigate.

How do I interpret the part number format?

Fastener numbers are six digits with a dash and coating code (e.g., 123456-П29 for zinc passivated). Non-fastener numbers are typically seven digits. Part numbers in bold are recommended spares. Interchangeability codes (A, A1 vs B, V) indicate whether parts can be swapped with earlier versions. The coating codes are: П (no coating), П2 (phosphate and oil), П5 (copper), П15 (oxidation), П29 (zinc and passivation), П34 (passivation). When ordering bolts, you must specify the correct coating to match the original. Also, numbers in bold are the recommended stocking spares per the factory. This is explained on page 3.

If you work on these engines, stop chasing aftermarket part numbers. Access the Factory Manual from AutoRepairManuals and keep it on your tablet or printed by the bench. One lookup saves you from ordering the wrong rod bearing.