Description

Takeuchi TB145 Parts Catalog

You’ve got a TB145 that needs a new idler assembly, or maybe a wiring harness for the electrical system. You pull up a generic parts diagram from some third-party site. Half the part numbers don’t match. The exploded view is wrong. You order three times and still get the wrong seal. That’s what happens when you don’t start with the genuine factory parts catalog. This is the original OEM publication, 680 pages, direct from Takeuchi. No translation errors. No aftermarket shortcuts. It’s the same book the dealer parts counter uses.

That ‘Parts Index’ at the back alone is worth the price. Every part number cross-references to the exact figure. No guesswork. You want a part for the 4TNE88 or 4TNV88 engine? It’s in the ‘Engine for TB145’ section. Need a track roller for serial number 14510004 and up? Go to Section 1. The manual spells out the serial number break clearly.

Undercarriage: What Sprocket Fits Your Serial Number?

Section 1 covers the undercarriage. If you’re replacing track chains or sprockets, you need the exact serial number range. This manual gives you the part numbers for each iteration. I’ve seen guys order a sprocket that’s one tooth off because they used an online database. That’s a wasted afternoon. With this catalog, you look at the figure, verify your serial, and order once. The exploded diagrams show every bolt and washer. You can count them before you pull the old part off. Saves time when your machine is down.

Engine & Electrical System: Two Variants Explained

Section 3 covers both the Engine and the Electrical system. The catalog splits the engine section into two sub-sections: 4TNE88-(E)TB(1) and 4TNV88-QTB, QTB1. Each has its own parts index. If your TB145 has the 4TNV88, the starter and alternator part numbers are different from the 4TNE88. Using the wrong one means a wiring mismatch or mounting bolt holes that don’t line up. This manual gives you the correct part numbers, no guesswork. The electrical section covers the entire harness, relays, and control switches. For a machine that lives on a job site, having the right electrical part numbers keeps you from chasing grounds.

Turntable & Control Lever: Don’t Guess the Part

Section 2 is the turntable and control lever assembly. This is where the swing brake and travel lever parts live. If your swing is creeping, you need the right brake pack. The catalog shows each shim and spring. Order the complete kit or individual pieces. The manual includes a note about compatibility symbols — pay attention. Some parts have a star (★) indicating they are included in a higher assembly. Don’t order a part that’s already in the kit unless you want two extras on the shelf.

How to Use the Parts Index at the End

Pages 670 to 680 contain the parts index. This is not a simple list. It’s a cross-reference that tells you the page number and figure for every part number. When you have an old part with a number stamped on it, look it up here. Then flip to the illustration and verify by sight. The manual also has a section explaining how to read the catalog — symbols like “AR” (as required) and compatibility codes. Read those four pages before you start ordering. It saves phone calls to the dealer.

Hydraulic Piping & Tank: Avoiding Common Mistakes

Section 4 covers the hydraulic piping and tank. If you’re replacing hoses, the catalog labels each line with the correct part number and length. The fittings are shown with torque specs? No, this is a parts catalog, not a service manual. But it does show the exact O-ring and seal part numbers. Don’t reuse old seals because they looked okay. Order the new ones from the illustration. The tank assembly includes the filler cap and strainer. Those small parts are easy to lose. Keep the catalog open while you disassemble. Mark the figure with a highlighter so you know which hose goes where.

For more detailed service procedures on this machine, pair this parts catalog with the Takeuchi TB145 TB150 Technical Manual. If you need the full disassembly steps for the hoe or the undercarriage, the Takeuchi TB125 TB135 TB145 Workshop Manual gives you torque specs and wear limits. And of course, you can always order the Takeuchi TB145 Parts Catalog directly from us.

If you want to understand how these parts fit into the broader construction equipment ecosystem, read the Automotive Industry Overview. For a general background on industrial repair standards, check the Automotive Industry Overview.

Frequently Asked Questions

Does this parts catalog include torque specifications for assembly?

No. This is a parts catalog (680 pages). It lists part numbers, exploded views, and quantities. Torque specs are in the workshop manual. Buy the TB145 workshop manual separately.

How do I know which engine variant my TB145 has?

Look at the engine nameplate. If it says 4TNE88 or 4TNV88, use the corresponding section. The catalog covers both.

Can I use this catalog for a TB145 with serial number below 14510004?

This edition covers S/N 14510004 and up. Earlier machines may have different part numbers. Check the part number on your old part and verify against the index.

Why are some part numbers marked with a star (★) in the illustrations?

Stars indicate parts that are included in a sub-assembly. If a larger assembly has multiple stars, it means those components are nested. Order the top-level assembly to get all starred parts unless you need only the individual piece.

This is the real OEM catalog. 680 pages of factory diagrams, part numbers, and serial number breaks. If your TB145 is down and you need to order parts, start here. Access the Factory Manual and keep it on your bench.