Description

Takeuchi TB108 Parts Catalog

You ever order a part from a generic cross-reference and end up with a box of wrong metal? I have. That’s why I keep the Takeuchi TB108 Parts Catalog on the bench next to the torque wrench. This is the factory book – 282 pages of exploded diagrams and OEM part numbers for the TB108, serial 10810004 and up. If you’re rebuilding the 2TNE68-ETBA engine or chasing a hydraulic leak, you need the exact part numbers, not a guess. This catalog covers every assembly: undercarriage, turntable, engine & electrical system, hydraulic piping, cover & cab, hoe attachment, decals, and hydraulic devices. The engine section alone breaks down the cylinder block, camshaft & driving gear, crankshaft & piston – everything down to the last bolt. I’ve seen techs order a cylinder head gasket from a third-party list and get one that doesn’t match the fire ring. That’s downtime you don’t bill for.

Let’s be clear: this is a Parts Catalog, not a service manual. It won’t tell you how to rebuild the injection pump or set valve lash. What it does give you is the factory part number, the quantity, and the interchange notes – like the compatibility symbols between original and superseded parts. Page 5 shows the ordering instructions: machine model, serial number, part number, part name, quantity. Miss any of those and you get the wrong part. The manual is in English, French, German, and Japanese – so if you’re working on a grey-market machine, you can still navigate.

Engine & Electrical System: 2TNE68-ETBA Parts Breakdown

Section 3 in the main TOC is “ENGINE & ELECTRICAL SYSTEM.” But the real meat is the dedicated engine section starting after the main contents. It’s broken into 17 sub-sections, from CYLINDER BLOCK (section 1) to TOOL & GASKET SET (section 17). Need a camshaft? That’s section 7: CAMSHAFT & DRIVING GEAR. The exploded view shows the camshaft, drive gear, thrust plate, and the bolts – with the Takeuchi part numbers. No aftermarket renumbering. I’ve used these to cross-reference a 2TNE68 camshaft that a parts house swore was the same as a 3TNE88 – it wasn’t. The catalog also covers the STARTING MOTOR (section 15) and GENERATOR (section 16), so you can order an armature or brush kit with confidence.

Camshaft & Driving Gear: Matching OEM Specs

When you’re rebuilding the top end of the 2TNE68, the camshaft and its driving gear are critical. The OEM part numbers in this catalog come from the same drawings used to build the engine. The exploded diagram in section 7 of the engine part shows the gear housing, the camshaft gear, and the timing marks. You’ll see the bolt part numbers, washer sizes, and the quantity – 1 camshaft, 1 drive gear, 3 bolts (if I recall from the diagram). That level of detail keeps you from ordering a gear with the wrong tooth count. I’ve had a junior tech try to fit a gear from a different serial range – this catalog saved him an hour of rework.

7 Main Systems Covered – Not Just the Engine

Beyond the engine, the catalog splits the machine into 8 main sections plus a parts index. Here’s what you get:

• 1. UNDERCARRIAGE – track chains, rollers, sprockets
• 2. TURNTABLE & CONTROL LEVER – swing mechanism, joysticks
• 3. ENGINE & ELECTRICAL SYSTEM – already covered
• 4. HYDRAULIC PIPING & TANK – hoses, fittings, reservoir
• 5. COVER & CAB – panels, glass, seals
• 6. HOE ATTACHMENT – boom, arm, bucket linkage
• 7. DECAL & TOOL – safety labels, factory tools
• 8. HYDRAULIC DEVICE – pumps, valves, cylinders

Each section has its own exploded diagrams with callouts matching the parts list. The parts index at the back lets you search by part number – fast if you have a broken part in hand. For example, if you need a cylinder seal kit for the hoe attachment, you find the section, locate the cylinder, and read the part number right off the page. I’ve used this to order a bucket pin bushing that the dealer claimed was discontinued – turned out the part was still available as a superseded number listed in the compatibility notes.

Source Validity: OEM Takeuchi Documentation

This is a factory Takeuchi document, book number BBSZ003. Not a aftermarket compilation or a scanned reprint of a reprint. The OCR excerpt shows the original Japanese-English-French-German layout, including the research system instructions. The page headers explicitly state “TB108 Book No. BBSZ003 S/N 10810004-“. That serial number range matters – if your machine is older than 10810004, some parts may differ. The manual includes revision numbers on each page so you know if you’re looking at the latest update. I trust this over any third-party parts listing because the part numbers are straight from the manufacturer’s inventory system. If you want to understand why OEM documentation matters in the Automotive Industry Overview, the same principles apply to construction equipment: a wrong part can cause a failure at the wrong time. The Automotive Industry Overview on Wikipedia backs that up.

Who Needs This Parts Catalog?

If you own or maintain a Takeuchi TB108 compact excavator, you need this. DIY mechanics who do their own repairs will save the headache of ordering a part three times because the first two were wrong. Home garage enthusiasts working on a private machine – you don’t have a dealer parts counter on speed dial. Beginners will appreciate the clear exploded views and the part number formatting. A word of caution: this catalog does not include service procedures or torque specs. For that you need the workshop manual. Pair it with the Takeuchi TB108 Workshop Manual and the Takeuchi TB108 Service Manual for complete coverage. The Takeuchi TB108 Parts Catalog alone is for ordering – but it’s the foundation of a correct rebuild.

Does this parts catalog include torque specifications?

No. This is a parts catalog, not a service manual. You need the workshop manual for torque values and assembly procedures.

Can I use this to find a replacement camshaft for my TB108?

Yes. The engine section lists the camshaft under CAMSHAFT & DRIVING GEAR (section 7) with the OEM part number, quantity, and compatibility notes. Verify your serial number matches the range (10810004 and up).

How do I read the exploded diagrams and part numbers?

Pages 3-5 explain the numbering system. Each part has a callout number on the illustration, and the corresponding row in the parts table shows the part number, name, quantity, and interchange codes. “△” marks parts needing technical confirmation. “★” indicates a built-in component. The manual also includes a parts index for reverse look-up.

Is this a reprint or a digital copy?

This is a digital PDF of the original factory parts catalog, book BBSZ003. It includes the full 282 pages in Japanese, English, French, and German. No aftermarket alterations.

Ordering parts for a Takeuchi TB108 doesn’t have to be a guessing game. You have the serial number, you have the exploded view, you have the OEM part number. That’s all you need. Access the Factory Manual from AutoRepairManuals and keep it on your tablet or print the relevant pages. I’ve got a copy on the bench – it’s saved me more than its cost in wrong-part returns. Get yours.