Description

Takeuchi TB138FR, TWN38, XTBZ 2007 Parts Catalog

You get halfway through a top-end rebuild on a 3TNV88 engine, pull a frozen camshaft out, and realize the new part doesn’t match the old one because the supplier gave you a superseded number. That’s exactly why you need the Takeuchi TB138FR, TWN38, XTBZ 2007 Parts Catalog in your bay — not some aftermarket cross-reference that lumps three revisions into one line. This is the exact document the dealer uses. 44 pages. Factory illustrations. Part numbers that come straight from the Takeuchi drawing board, not a guess.

What This Parts Catalog Covers

The catalog splits the 3TNV88-XTBZ engine into 19 numbered sections plus a numerical index. You get exploded views for the Cylinder Block (section 1), Camshaft & Driving Gear (section 7), Crankshaft & Piston (section 8), and all the support systems: Cooling Water System (section 10), Fuel Injection Pump (section 12), Fuel Injection Valve (section 13), and Fuel Line (section 14). Radiator, starting motor, generator, gasket set — it’s all there. Each section shows the assembly with reference numbers that tie directly to the parts list. You don’t have to call the dealer and describe what you’re looking at.

3 Engine Systems You’ll Need This For

Cooling System Overhaul — The water pump, thermostat, and radiator hoses have specific part numbers that change with serial number breaks. Section 10 (Cooling Water System) and section 11 (Radiator) give you the exact components. Order the wrong impeller and you’re chasing overheating on a 3,000-hour machine.

Fuel Delivery Path — The injection pump, injector valve, and lines (sections 12-14) include boost compensator variants. The OCR excerpt shows multiple pump sub-models (YRJH-D1, YBJH-D1, etc.) with different O-ring kits. Without the factory catalog, you’ll end up with a pump that doesn’t match your governor housing.

Valve Train Rebuild — The cylinder head (section 4) and the camshaft/driving gear assembly (section 7) list every valve, spring, retainer, and shim. The interchangeability marks tell you whether a newer part swaps backward. Page 7 shows the camshaft gear and thrust plate reference numbers. Don’t trust a generic parts website for that.

Using the Numerical Index to Find Parts

Every part number in the catalog runs through a numerical index at the back. You’ve got a bolt or seal with a number stamped on it — flip to the index, get the section and reference number, then go straight to the exploded view. No scrolling through PDF thumbnails. The index also includes supersession notes where Takeuchi changed designs mid-production. That bit saved me three days of waiting for a back-ordered crankshaft thrust washer that turned out to be a standard shelf item under a different number.

Why Factory Parts Catalogs Beat Aftermarket Cross-References

Aftermarket books take the original catalog, guess which parts fit which serial range, and call it done. Then you order a cylinder head gasket set, it doesn’t have the dowel pins because the aftermarket editor didn’t think they mattered. A 44-page OEM catalog from 2007 lists every seal, O-ring, and bolt. Interchangeability is marked N (not backward-compatible), R (reversible), or K (new part replaces old but old won’t go forward). You don’t need to gamble on whether a revised part will fit. The manual tells you up front. That’s the difference between a six-hour job and a three-day cluster.

Common Mistakes When Ordering Takeuchi Parts

Most guys assume the part number on the box is still current. Takeuchi revises parts and marks the change in the catalog. If you’re looking at section 8 for the crankshaft, check the bottom of the page for the interchangeability mark. The catalog also lists optional parts. The OCR excerpt points out “optional part: TO E/♯00155” for the compensator-type injection pump. If you don’t check that remark, you might order a standard pump for a machine that needs the boost version. Also, the parts list uses a dot system to show parent-child relationships. A part with two dots is inside a subassembly, which means you might not need to order the whole thing — just the child part. Save money and shelf space.

FAQ

Does this catalog cover the TB138FR and TWN38?

Yes. The title lists both models plus the XTBZ variant. The engine covered is the 3TNV88-XTBZ, which is the common power unit for those compact excavators. The catalog includes parts specific to each chassis configuration where they differ.

Can I use this to rebuild the fuel injection pump?

This is a parts catalog, not a service manual. It lists every component in the pump (section 12 and 18-19) with part numbers and O-ring kits, but it does not give you removal or calibration procedures. For that, you need the corresponding workshop manual. We also carry the Takeuchi TB138FR Workshop Manual – Section: Moteur and Takeuchi TB138FR Workshop Manual – Section: Vi. Engine which contain the rebuild specs.

What torque values does it include?

None. Torque specs are in the service manual, not the parts catalog. This document is strictly for identifying and ordering the correct parts. If you’re torquing head bolts, you need the factory repair manual — not this PDF.

How do I know if a part number is superseded?

Check the interchangeability mark column. N means the new part won’t fit the old application. R means you can use the new part on an old machine, but the old part won’t work on a newer one. K means the new part replaces the old one both ways. The catalog also lists old part numbers that were changed mid-production.

Every time I’ve seen a parts snafu on a TB138FR or TWN38, it came from someone who thought a generic OEM-style PDF was good enough. It’s not. You need the actual factory sheets with the correct part numbers, interchangeability data, and the exploded diagrams. That’s what this 2007 Parts Catalog delivers. Automotive Industry Overview can tell you about the broader market, but for your Takeuchi, you need the real thing. Automotive Industry Overview doesn’t have a parts list for your machine. Access the Factory Manual and get the part number right the first time.

• Takeuchi TB138FR Parts Catalog
• Takeuchi TB138FR Workshop Manual – Section: Moteur
• Takeuchi TB138FR Workshop Manual – Section: Vi. Engine