Takeuchi TB260 Service Repair Manual PDF

Takeuchi TB260 Service Repair Manual – 702 Pages
Language of the Manual: English
Takeuchi TB260 Service Manual – 702 Pages
For All applicable S/N

The Takeuchi TB260 manual is intended for persons who engage in maintenance operations, and explains procedures for disassembly and reassembly of the machine, check and maintenance procedures, maintenance reference values, troubleshooting and outline specifications, etc. Please use this Takeuchi manual for excavator TB260 as a reference in service activities to improve maintenance techniques.

Please note that the contents and diagrams included in this manual may not match your machine exactly.

Items or diagram which manual contains are subject to change without notice due to design modifications, etc. Always store the Takeuchi excavator manual near at hand preferably on the machine itself. When transferring ownership of this machine, be sure to provide the owner manual to the next owner.

Table of Content of TB260 Instructions Manual:

I . GENERAL
II . SPECIFICATIONS
III. MACHINE CONFIGURATION
IV. HYDRAULIC UNITS
V . TROUBLESHOOTING
VI. ENGINE

Before operating, perform the prescribe inspections and make repairs immediately should any irregularities be found. If a failure that causes loss of control such as steering, service brakes or engine occurs, stop the machine motion as quickly as possible, follow the shutdown procedure, and keep machine securely park until the problem is fixed.

Extract from the Service Manual:
When the control lever is pulled slowly, the boom drops temporarily.
1. Check the load check valve in the control valve.
a. Disconnect the control valve end of the hose connecting the control valve and the boom cylinder.
b. Connect the disconnected hose to the arm or bucket block.
c. Operate the boom cylinder.
If the boom cylinder operates normally, the load check valve is faulty.
Before performing steps a to c above, set the machine posture as described below.
Fully extend the bucket cylinder, fully retract the arm cylinder, and rest the bucket on the ground.

When the spool first starts to pull, the oil pressure is low and the flow rate is small. If the load check valve is faulty, the oil temporarily flows back due to the load applied to the boom cylinder. As a result, the boom temporarily drops.

2. Check for leakage inside the boom cylinder.

If the oil flows from the head end (A) to the rod end (B) due to a faulty boom cylinder piston or tube, the boom temporarily drops because of the low oil pressure and small flow rate when the spool first starts to pull. Also, the cylinder has insufficient drive force.

However, the amount of spontaneous drop is also large in this case.
Check the cylinder.
Refer to 5. Troubleshooting, Boom, Boom cylinder is slow or lacks force.