Description

Takeuchi TB025 Parts Catalog – 321 Pages of Factory Part Numbers

I’ve been turning wrenches since before most of you were born, and I’ve seen more parts-counter screwups than I care to count. A guy brings in a Takeuchi TB025 with a blown track motor, orders a “universal” replacement, and ends up with a part that doesn’t fit the bolt pattern. Then he blames the machine. The problem wasn’t the machine – it was the lack of a factory parts catalog. This Takeuchi TB025 Parts Catalog is 321 pages of OEM part numbers, explosion views, and serial-number-specific listings. You want to know what slew bearing fits? Page 1-3. Need the correct bolt for the lower frame? The chart shows part number 1100040816, quantity 4, with spring washer 1140020008. No guesswork, no aftermarket cross-reference that’s wrong half the time. This is the same document the dealer’s parts department uses.

Undercarriage and Lower Frame – Section 1

Section 1 in the TOC is “UNDERCARRIAGE,” and it starts with the lower frame assembly. The exploded diagram on page 1-3 (reference E3-01a-4-D) lists every single component: the frame itself (part number 0351001100), the bracket, covers, grease bath, slew bearing, swivel joint, and all the bolts and washers. Each item has a part number, description, quantity, and a column for serial number applicability. If your TB025 has a serial number between 1255001 and 1258249, this catalog matches. You’ll see the exact bolt lengths and washer types – no more digging through bins of generic fasteners that might strip. The bearing slew slewing ring? Part number 1913003600, with a separate seal 1913003609. You don’t order a seal kit; you order the exact seal.

Engine and Electrical System – Section 3

Section 3 covers “ENGINE & ELECTRICAL SYSTEM.” This is where the confusion usually starts. The TB025 came with two engine variants: the 3TN84L-RTBZ and the 3TNE84-TBZ/TBY (listed in Section 10). The electrical system section includes the starter, alternator, wiring harness, and control switches. Without the OEM part numbers, you’ll be calling three different suppliers and still get the wrong voltage regulator. This catalog lists every connector, relay, and fuse block. The engine block itself is covered in Section 10 with separate parts lists for each engine code. If you’re rebuilding a 3TNE84, you need the part numbers for pistons, rings, gaskets – all here. The OEM data is verified against the Takeuchi factory drawings, not some third-party scan.

Parts Catalog vs. Service Manual – Why You Need Both

A parts catalog gives you the part numbers. A service manual gives you the procedure to install them. The Takeuchi TB025 TB030 TB035 Workshop Manual – Section: I. General tells you torque specs, sealant types, and assembly order. The Takeuchi TL26 Parts Catalog – 288 Page OEM Factory Manual covers the TL26, but for the TB025, this is the one. You can’t do a proper overhaul without the parts catalog because you’ll be missing a snap ring or a bushing that only shows up in the exploded view. I keep a service manual on the bench and a parts catalog on the tablet. Every time I’ve tried to skip the catalog, I’ve ended up ordering a part that was superseded or discontinued. With this OEM catalog, you get the current part number, not a dead listing.

How to Read the Parts Listings – Real Data from Page 1-3

Look at the OCR excerpt from the catalog. The table format is consistent across all 321 pages. Example: Item 1-1 is “BRACKET” part number 0471000900, quantity 1. Item 5 is “COVER” 0341004000, quantity 2. Each line has a part number, description, quantity, and a column for “Chan.” (change) and “Serial No.” (serial number applicability). The bottom of the page shows the reference: E3-01a-4-D. This is how you verify you’re looking at the correct revision. The catalog also includes a separate index page (page 0) that lists all section headings. When you’re ordering a part, you write down the part number from this catalog – not the one from some aftermarket website that claims “fits Takeuchi TB025.” The OEM part numbers are the only ones that guarantee the correct fit and material spec.

7 Systems Covered – From Hydraulics to Decals

The TOC breaks down the TB025 into these sections: 1 UNDERCARRIAGE, 2 TURNTABLE & CONTROL LEVER, 3 ENGINE & ELECTRICAL SYSTEM, 4 HYDRAULIC PIPNG & TANK, 5 COVER & CAB, 6 HOE ATTACHMENT, 7 DECAL & TOOL, 8 HYDRAULIC DEVICE, 9 KITS, ATTACHMENTS & QUICK REFERENCE, and two engine sections (10 ENGINE(3TN84L-RTBZ) and 10 ENGINE(3TNE84-TBZ/TBY)). That’s the entire machine – every nut, bolt, seal, hose, decal, and attachment. The hydraulic piping section alone has all the fittings and O-rings. The decal section shows the warning labels and their exact placement. If you’re restoring a TB025 and need the correct “Do not operate” decal, the part number is in Section 7. The quick reference section (9) lists common kits and attachments. No other resource gives you this depth. The Takeuchi TB025 Parts Catalog is the only one you need for part identification.

FAQ – Takeuchi TB025 Parts Catalog

Does this parts catalog include torque specifications for assembly?

No. This is a parts catalog, not a service manual. It lists part numbers, quantities, and exploded views. For torque values and tightening sequences, you need the Takeuchi workshop service manual. The Takeuchi TB025 TB030 TB035 Workshop Manual – Section: I. General covers that. Use both together.

What serial number range does this catalog cover?

The catalog is marked for serial numbers 1255001 through 1258249. If your machine falls outside that range, some parts may differ. Always check the serial number column in the parts list – some items are specific to a serial number break.

Is this a reprint or an original OEM document?

It’s a digital scan of the original factory parts catalog published by Takeuchi. No aftermarket reprints, no third-party compilation. The part numbers are direct from the manufacturer. The file is a PDF of the OEM book, not a copy.

Which engine models are covered in the engine sections?

Section 10 has two sub-sections: one for the 3TN84L-RTBZ engine and one for the 3TNE84-TBZ/TBY. Both are covered completely with separate parts lists. The electrical system section (3) includes components for both engine variants. If you need a part for the 3TNE84, go to the correct sub-section.

321 pages. That’s what you get. Every page is a direct reproduction of the Takeuchi factory document. The automotive industry has moved toward generic parts databases, but when you’re working on a compact excavator that needs to earn its keep, you don’t gamble with aftermarket cross-references. Automotive Industry Overview shows how standardized documentation has become, but Takeuchi stays with OEM-specific catalogs for a reason – accuracy. Access the Factory Manual now and cross-reference the part numbers against your machine’s serial plate. You’ll save yourself a trip to the parts counter and a headache.