Description

Takeuchi TL120 Parts Catalog – OEM Factory Parts Breakdown for the 4TNV84T Engine

You’ve got a Takeuchi TL120 Parts Catalog in your hands, and I’m going to tell you why you need it on the bench next to the machine. Over 28 years I’ve seen guys waste a full day because they ordered a roller assembly from a generic parts list only to find out the bearing was wrong. This catalog kills that. It’s 229 pages of OEM exploded views, exact part numbers, and serial number cutoffs. The engine section alone—4TNV84T-XTBL—is worth the price if you’ve ever fought a fuel system rebuild with mismatched injectors. No guesswork, just factory data printed on page 0-1: Book No. BT3Z001-2, Serial No. 21200008-.

Engine for TL120 4TNV84T-XTBL – What’s Inside

The engine chapter (listed as “ENGINE (4TNV84T-XTBL)” in the index) covers every internal component from the short block to the injection pump. You’ll find the same part numbers Takeuchi used on the assembly line. The index on page 0-1 breaks it down: “10 ENGINE(4TNV84T-XTBL) 2008.7.21”. That date stamp matters when you’re cross-referencing superseded parts. I’ve had to order a cylinder head gasket twice because the aftermarket catalog didn’t show the revision. Not here. You get the factory revision date and the part number.

Index Structure: Undercarriage, Frame, Hydraulics, and More

Seven major sections in the index: 1-UNDERCARRIAGE, 2-MAIN FRAME & CONTROL LEVER, 3-ENGINE & ELECTRICAL SYSTEM, 4-HYDRAULIC PIPNG & TANK, 5-COVER & CAB, 6-ATTACHMENT, 7-DECAL & TOOL, 8-HYDRAULIC DEVICE. Each section groups parts by location. If you’re chasing a hydraulic leak on the TL120, Section 4 gives you the exact pipe routing and O-ring sizes. The track roller assembly (Section 1) shows you the roller sub-assy, seal, bearing, and retaining ring—all with Takeuchi part numbers like X08801-35000-0. That’s the kind of detail that keeps you from ordering twice.

Part Numbers and Serial Number Ranges – Why You Need the Correct Book Number

The catalog is serialized: “TL120 Book No. BT3Z001-2 S/N 21200008-”. Every part number in the book is tied to that serial range. If your machine is older than 21200008, you need the earlier book. I’ve seen shops order a final drive carrier based on a generic listing and get the wrong spline count. This catalog lists the exact “Chan.” (change) column in the parts table—for example, on page 1-2 for the TRACK ROLLER B, you’ll see a “Chan.” column that tells you when a part was revised. That single column saves you from buying a part that won’t fit.

Track Roller B Assembly – Page 1-2 Example

Take a look at page 1-2. The table gives you: Item, Part Number, Description, Q’ty, Chan., Serial No., Serv., Remarks. Item 1 is “ROLLER ASSY, track” with part number X08801-35000-0. Item 2 is “ROLLER SUB ASSY, track” with 0880135100. Item 6-1 and 6-2 are the floating seal and O-ring. If you’re rebuilding a track roller, you need those seal numbers. The catalog also shows the reference drawing “T3A020” so you can visually match the parts. No squinting at a blurry online image. It’s factory line art with callouts.

OEM vs Aftermarket Documentation – The Real Difference

Aftermarket parts catalogs often combine multiple models into one PDF, drop serial number cutoffs, and omit the “Chan.” revision column. That costs you time and money. This Takeuchi TL120 Parts Catalog is a direct scan of the OEM booklet. It’s the same document Takeuchi shipped to dealers. The page numbers match the original printed version. I’ve pulled parts from a dealer using the numbers in this book, and they’ve never questioned the order. If you’re working on a TL120, you want the factory data, not a third-party rehash. The Takeuchi TL120 Workshop Manual – Section: Engine gives you the repair procedures, but this parts catalog is the one you use when you’re standing at the parts counter or ordering online.

Understand the wiring before you touch it. The electrical section (part of Section 3) includes the harness diagrams and connector part numbers. I’ve had to replace a corroded engine harness connector on a 4TNV84T, and the generic cross-reference gave me a 12-pin when the OEM used a 10-pin. The catalog shows the correct connector part number. Pair it with the Takeuchi TL120 Workshop Manual for the full service specs.

FAQ

Does this parts catalog cover the TL120 with the 4TNV84T engine?

Yes. The engine section is specifically for the 4TNV84T-XTBL diesel, serial number 21200008- and later. It covers the long block, injection system, and electrical components.

Can I use this catalog to order parts for a TL120 built before 2008?

Check the serial number. This book is for units starting at 21200008-. Earlier machines need the prior book number. The catalog’s index and part tables include a “Chan.” column to show revision changes.

Is there a wiring diagram in this parts catalog?

Section 3 (ENGINE & ELECTRICAL SYSTEM) includes harness diagrams and connector part numbers, but not full color schematics. For wiring repairs, also get the Takeuchi TL120 Workshop Manual – Section: Moteur which has the diagnostic flowcharts.

What’s the difference between this parts catalog and a service manual?

This is a parts catalog—exploded views, part numbers, quantities, and serial number ranges. It doesn’t have torque specs or repair procedures. The workshop manual has those. Both are needed for a proper job; the parts catalog tells you what to order, the workshop manual tells you how to install it. For an overview of the broader industry, see Automotive Industry Overview and Automotive Industry Overview.

You’re not going to find a cleaner source of OEM part numbers for the Takeuchi TL120. The 229 pages are indexed, serialized, and factory-verified. If you’re rebuilding undercarriage, fixing an engine, or chasing hydraulic leaks, this catalog stops the parts-ordering headaches. Access the Factory Manual and get the correct part numbers the first time.