The Boom, Bucket, Slew And Arm Do Not Move At All, Or The Speed Is Low - Takeuchi TB53FR Workshop Manual

OVERALL MACHINE

THE BOOM, BUCKET, SLEW AND ARM DO NOT MOVE AT ALL, OR THE SPEED IS LOW.

Inspect the hydraulic
1
pump P4.
Normal
2 Inspect the fuse.
Normal
3 Inspect the limit switch.
Normal
Inspect the lever lock so-
4
lenoid valve.
Normal
Inspect the pilot relief
5
valve.
Normal
6 Inspect the pilot valve.
1. Inspect the hydraulic pump P4.
Inspect the hydraulic pump P4 (1) which is the
source of the hydraulic pressure for the pilot
valve.
"V-4"
Since clogging of the line filter can also be con-
sidered, inspect and clean the filter.
Faulty
Faulty
Faulty
Faulty
Faulty
Faulty
V-7
TROUBLESHOOTING
Repair or replace the hydrau-
lic pump P4.
Replace the fuse.
Adjust or replace the limit
switch.
Repair or replace the lever lock
solenoid valve.
Adjust, repair or replace the
pilot relief valve.
Repair or replace the pilot
valve.
TB53FR
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