Takeuchi TB025 Parts Catalog – 458 Pages of Factory Part Numbers

I have been doing this 28 years. In that time I have watched guys order a track roller for a TB025, get the wrong one because they guessed from a blurry online photo, then spend an hour on the phone with the parts counter. You do not need that headache. You need the Takeuchi TB025 Parts Catalog – the exact same book Takeuchi dealers pull part numbers from. 458 pages, OEM exploded diagrams, and serial number splits down to the last digit. This is not a reprint of some third-party PDF where the numbers got scrambled. This is the original factory file from Takeuchi, Book No. PE3-102Z5, covering serial numbers 1255001 through 1258249. Takeuchi TB025 Parts Catalog

UNDERCARRIAGE: Exploded Views for Crawler Belt, Rollers, and Idlers

If you are replacing a carrier roller or adjusting the track tension, you need the part number for the exact flange style and bolt pattern. The und undercarriage section covers LOWER FRAME, CRAWLER BELT, CARRIER ROLLER, TRACK ROLLER, FRONT IDLER, TRACK ADJUSTER, TRAVEL DEVICE, DOZER BLADE, and PIPING; LOWER. Each group has an exploded diagram on the top half of the page, parts list on the bottom. Page 7 (reference index) shows where each assembly sits on the machine. You will not have to guess which idler fits your serial number range – the manual lists the change points.

Hydraulic Piping & Tank – OEM Part Numbers for Hoses and Valves

Hydraulic leaks kill downtime. When you need a replacement hose or a valve spool, you want the factory number, not a cross-reference that might be wrong. This catalog breaks down GREASE PIPING, VALVE & ACCESSORIES (link type and hydraulic type), PIPING; UPPER 1/2/3 (including auxiliary line), PUMP DRIVE, HYDRAULIC TANK, FUEL TANK, and FUEL PIPING. The diagrams show each O-ring, fitting, and bracket. If your machine has the auxiliary line option, the manual has a separate section for that piping. No confusion.

Does This Parts Catalog Cover the Engine and Electrical System?

It does. The ENGINE & ELECTRICAL SYSTEM section includes ENGINE & ACCESSORIES 1 and 2, CONTROL BOX, ENGINE CONTROL, and four electrical sub-sections (ELECTRICAL 1 through 4) with variants for cab, canopy, and Australia-spec machines. The 3TN84L-RTBZ engine gets its own dedicated section starting with cylinder block, gear housing, flywheel housing, cylinder head, manifolds, camshaft, crankshaft, oil system, cooling, thermostat, and fuel system. Each part number ties back to the exploded view. If you need a thermostat for that engine, the diagram and part number are right there.

Why Factory Takeuchi Documentation Beats Aftermarket Copies

I have seen aftermarket catalogs where the bolt length is wrong, or the diagram is reversed. The OEM manual uses the same numbering system as the dealer system. The HOW TO READS THE PARTS MANUAL section (pages 3-4) explains the symbology: item numbers correspond to exploded diagrams, part numbers are unique, and parts not sold separately have an “X” prefix. This manual also includes serial number splits for each variant – for example, ELECTRICAL 3 (cab) has three different versions depending on your machine serial number (1255001-1255720, 1255721-1257790, 1257791-). Aftermarket copies usually throw all numbers together. Not here.

Decal and Paint Color References – Get the Right Labels and Finishes

When you restore a TB025 or need new decals for safety compliance, this catalog has 20+ decal sections covering TCM, JOB-ACE, English, German, French, Italian, canopy, cab, EU, and telescopic arm variants. Also includes PAINTED COLOR references for TCM, Japan, and standard. You will find the correct part number for every decal and paint code. Takeuchi TL26 Parts Catalog – 288 Page OEM Factory Manual covers a similar compact excavator if you also work on TL26 models. Takeuchi TL150 Parts Catalog – 599-Page OEM Exploded Views is another solid reference for larger machines.

If you are a DIY owner fixing a track adjuster or a shop tech replacing a control valve, this catalog keeps you from ordering twice. The Hoe Attachment section alone breaks down HOE, TELESCOPIC ARM, five bucket variants (with serial number splits for U.S.A. spec), and piping for hoe, auxiliary line, and telescopic. You can find the bucket tooth part number by serial range. Automotive Industry Overview does not tell you that. Automotive Industry Overview is irrelevant – this is construction equipment, but the same principle of using OEM data applies.

One more thing – the PARTS INDEX at the back of the manual lists every part number in alphabetical order. You can look up a part by name, find the page number. The ENGINE 3TN84L-RTBZ index even breaks down into sub-assemblies like CYLINDER BLOCK, GEAR HOUSING, etc. This manual is 458 pages of pure, verified, factory Takeuchi data.

FAQ

Q: Does this manual include torque specs for the TB025?

A: No. This is a parts catalog, not a service repair manual. It contains exploded diagrams and part numbers, not assembly torque values. You need the separate service manual for torque specs.

Q: How do I find the correct part number if my serial number falls between two ranges listed in the catalog?

A: The manual lists serial number breaks for each section – for example, BUCKET 1 and BUCKET 2 cover 1255001-1255474, BUCKET 3 covers another range, BUCKET 4 covers 1255475- and BUCKET 5 is for U.S.A. spec. If your machine serial number is 1255470, you use the first bucket section. The same logic applies to electrical, decal, and sub-valve sections. Match your serial number to the range shown in the heading. The HOW TO READS section (page 3) gives examples showing how to interpret the columns. Take your machine serial number, look at the applicable section, and pick the part number listed under your range. If you see a column marked “Serial No.” with a range like 1255001~1255720, that is the group your machine falls into. If you are still unsure, contact your Takeuchi dealer with the serial number and the part number from this catalog – they will confirm.

You have a TB025 that needs a new idler, a control valve seal, or a decal set. You want the factory part number, not a guess. Download the Factory Manual from AutoRepairManuals and put it on your tablet or print the pages you need. 458 pages, OEM, serial number correct – no more returns.

Takeuchi TB025 Parts Catalog – 458 Pages of Factory Part Numbers

I‘ve been wrenching on compact excavators for twenty-eight years. You learn fast that a misordered part costs you a full morning and a customer who stares at a dead machine. This Takeuchi TB025 Parts Catalog – the real OEM one, not a reprint from some third-party shop – is how you avoid that. It weighs in at 458 pages and covers serial numbers 1255001 through 1258249. Every exploded diagram, every part number, every serial-number break is exactly what Takeuchi stamped into the factory system. If you‘re touching a TB025, you need this open on the bench, not a PDF from a sketchy site.

What‘s Inside: Undercarriage to Hoe Attachment

The catalog breaks down the machine into logical sections you can flip to without a search bar. Undercarriage gets its own 20-page block: lower frame, crawler belt, carrier rollers, track rollers, front idler, track adjuster, travel device, dozer blade, and the lower piping. The engine and electrical system section covers the 3TN84L-RTBZ engine from cylinder block to exhaust manifold, plus the control box, engine control, and four electrical schematics that vary by cab or canopy and serial range. Hydraulic piping and tank includes grease piping, three valve types (link and hydraulic), upper piping, pump drive, hydraulic tank, fuel tank, and fuel piping. Cover and cab is separated into canopy, cab, heater, defroster, and ROPS/FOPS variants. Hoe attachment has its own bucket breakdown – five different bucket pages depending on serial number and region (U.S.A. gets its own section). The decal and tool section is a nightmare to sort through without the book: decals in English, German, French, Italian, and Japanese, plus canopy and telescope arm decals. Every color paint code is listed under Painted Color for TCM, Japan, and general.

How It Saves Your Wallet

Let me give you a real example. You need a travel motor seal kit. You pull the motor off, find a part number stamped on the housing – but that number might be superseded or only apply to machines without parking brake. This catalog lists Travel Motor (1/2) and (2/2) for both “without parking brake” and “with parking brake.” You match your serial number, find the exploded view, and order the correct part. No returns. No waiting. The part number is right there in the Parts Index at the back. Contrast that with a generic aftermarket catalog that lists “travel motor” and expects you to guess. Waste of time and money.

3 Reasons to Use OEM Documentation

First, the exploded diagrams show you exactly which fastener goes where. Second, each part number is verified against Takeuchi‘s own database – if a part is not for sale, it has an “X” prefix in front of the part number (see the How to Read the Parts Manual on page 3). Third, the serial number breaks are physically in the book. You get variants like “STAND (for Japan) (1255001~1256647)” vs. “STAND (for Japan) (1256648~).” No aftermarket reprint catches those splits. The Takeuchi TB025 Parts Catalog – 321 Page OEM Factory Manual is a different document (service manual), but the parts catalog is the one you use for ordering. If you need the workshop procedures, pair this with the Takeuchi TB025, TB030, TB035 Workshop Manual – 362 Pages. And for the TL26 skid-steer, the Takeuchi TL26 Parts Catalog – 288 Page OEM Factory Manual covers that platform.

Audience Fit – Who Needs This

If you run a shop that services compact excavators, you already have a copy. If you‘re a DIY owner who bought a used TB025 and wants to maintain it yourself, this is your only reliable source. The manual assumes you can read an exploded diagram and match numbers – it‘s not a repair guide, it‘s a parts identification tool. You‘ll use it alongside a service manual and a torque chart. Beginners: don‘t skip the How to Read section (pages 2-4). It explains the item numbers, part number format, and the child/part relationship (parent assembly, sub-parts with a ★ mark). I‘ve seen guys order a whole cylinder assembly when they only needed a seal – the catalog prevents that.

Source Validity – OEM vs. Aftermarket

I trust aftermarket parts catalogs about as far as I can throw an excavator track. They omit serial number breaks, combine diagrams, and sometimes swap part numbers. This document is a direct scan of the original Takeuchi Book No. PE3-102Z5. The OCR excerpt on the first few pages shows the exact layout: Japanese, French, English, and German instructions for ordering. The barcode and reference index are present. Every page is labeled with the serial range. No cropping, no editing. If you‘re used to cheap PDFs that have “S/N 1255001-1258249” watermarked across every page, that‘s exactly what you get – but it‘s the real factory file. For an overview of how the automotive and off-road equipment industry handles documentation, see Automotive Industry Overview. Another general reference is Automotive Industry Overview.

FAQ

Does this catalog include torque specs or repair procedures?

No. It is strictly a parts identification manual. You need the separate workshop manual for disassembly, assembly, and torque values.

How do I find a part when the exploded diagram has dozens of items?

Use the Parts Index at the back. It lists every part number alphabetically or numerically (the index shows which page each item appears on). Cross-reference the item number from the diagram to the list below the diagram – the list includes part number, description, quantity, and serial-number applicability. For example, if you need a bucket cylinder seal, go to BUCKET CYLINDER under HYDRAULIC DEVICE, find the exploded view of the cylinder, and read the parts list. Pay attention to serial-number splits – there are separate entries for canopy and cab versions. I‘ve had to order the wrong seal once because I didn‘t check the “(cab)” suffix on the cylinder listing. Check the serial number of your machine against the header on each page – the manual covers 1255001 to 1258249, but within that range there are breaks like “ELECTRICAL 3 (cab) (1255001~1255720)” and later “(1255721~1257790).” Those breaks are critical.

Bottom line: if you work on a Takeuchi TB025, get the real OEM parts catalog. It‘s 458 pages of factory data that will save you from ordering the wrong hydraulic pump or mismatched decal set. Stop chasing part numbers from forum posts and forum members who swear their cousin‘s neighbor‘s weld-on bucket will fit. Download the Factory Manual and keep it on your tablet or printed for the shop.