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TROUBLESHOOTING

OVERALL MACHINE

V-7 TB53FR

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

Inspect the hydraulic

pump P4.

Inspect the fuse.

Inspect the limit switch.

Inspect the lever lock so-

lenoid valve.

Inspect the pilot relief

valve.

Inspect the pilot valve.

Normal

Faulty

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.

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.

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Takeuchi TB53FR Workshop Manual

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