Description

Takeuchi TKB-71, TKB-71S Parts Catalog – OEM Factory Manual

If you’ve ever ordered a seal kit for a hydraulic breaker and got the wrong one because you trusted an aftermarket cross-reference, you know the frustration. That’s why I keep the factory parts catalog on the bench. This Takeuchi TKB-71, TKB-71S Parts Catalog is 32 pages of OEM-sourced exploded views, part numbers, and tool lists. Not a reprint. Not a third-party compilation. Straight from Takeuchi.

You’ll find this manual in the cab of the excavator if the previous owner followed the warning on page 1. That warning tells you to keep it there for reference. I’ve seen too many guys tear into a breaker without the proper parts list and end up with a pile of mismatched seals. This catalog saves you that mess.

Hydraulic Breaker Parts Breakdown (TKB-71/TKB-71S)

Chapter one is called “Name and Function of Each Part.” It labels every component from the front head to the back head. You get exploded views for the hydraulic breaker, the top mount bracket group (TB015, 020), the flange type bracket group, and the flange S type bracket group. Each view has a parts list directly underneath with the Takeuchi part number. No guessing which valve goes where. If you need the chisel pin or the seal kit assembly, those are listed separately in the option section.

How to Adjust Operating Pressure: Increment Plug Procedure

Page 16 covers the increment plug adjustment. First you check items like greasing, chisel pin gap, and oil leakage from the piston. Then the manual walks you through the procedure to adjust operating pressure using the plug. You need a pressure gauge and the service tool gas charger assembly, which is also listed in the tool list. Do not skip the check items – if your accumulator charge is low, you’ll adjust pressure around a bad gas charge and still get poor performance.

3 Sections You Will Use Most Often

First: the breaker parts list and tool list. It gives you the part numbers for every internal seal, o-ring, and backup ring. Second: the chisel change procedure. You’ll be in that section every time you swap a dull chisel. Third: the troubleshooting chart. It starts on page 20 and covers common problems like low impact energy, oil leakage from the front head, and the breaker not starting. Each symptom points you to a specific cause and the corrective action. No vague suggestions.

Understand the Valve Switching Method Before Disassembly

The hydraulic piping and valve switching method are covered in the “How to Operate the Breaker” chapter. If you pull the valve body apart without understanding the switching sequence, you can mix up springs and spools. This manual shows the correct orientation and the pedal method for engaging the breaker from the excavator. Read it before you loosen a single fitting.

Enclosure of Nitrogen Gas: Inspection and Adjustment

Every hydraulic breaker has a nitrogen gas chamber. The manual explains how to inspect gas pressure and what to do when it’s high or low. It tells you the required tools – the service tool gas charger assembly – and the procedure to top off or release nitrogen. Do not ignore this chapter. Running with incorrect gas pressure will damage the piston and the seals. You have been warned.

This manual also includes a section on removing and attaching the breaker. It gives the correct procedure for disconnecting hydraulic lines and storing the breaker when not in use. The storage and maintenance tips in that section will extend the life of the breaker if you follow them.

If you’re working on a Takeuchi excavator that mounts this breaker, you might also want a full parts catalog for the machine itself. Check the Takeuchi TL26 Parts Catalog – 288 Page OEM Factory Manual for the excavator components. For the larger TL150 excavator, see the Takeuchi TL150 Parts Catalog – 599-Page OEM Exploded Views. And for the TL140, grab the Takeuchi TL140 Parts Catalog – 457 Pages of OEM Parts Indexing. All verified factory prints.

Why does OEM documentation matter? Because a third-party reprint can lose resolution on the exploded views or transpose part numbers. The Automotive Industry Overview on Wikipedia explains how OEM specs differ from generic aftermarket data. Stick with the original. The Automotive Industry Overview confirms that factory documentation carries warranty and liability weight that aftermarket sources lack.

One last thing: the manual is 32 pages. It won’t take you long to flip through it, but every page has information you will need. Store it in the cab as instructed. You’ll thank me the next time a seal blows on a Friday afternoon.

Access the Factory Manual and keep it with your tools. You won’t be guessing part numbers again.

Does this manual include torque specs?

Yes, the Specifications section at the back lists torque values for the through-bolts and lock nuts.

What models are covered?

TKB-71 and TKB-71S.

Can I use this to disassemble my breaker?

This is a parts catalog, not a service manual. It shows exploded views and part numbers, but it does not contain step-by-step disassembly instructions. For that you need the separate Service Manual for the TKB-71/TKB-71S. The parts catalog will help you order the correct seals and gaskets before you start, which is half the battle. If you already have the service manual, this catalog complements it perfectly by giving you the exact Takeuchi part numbers for every component shown in the exploded views.

Is this a reprint?

This is a direct OEM PDF scan, identical to what Takeuchi originally printed.