Takeuchi TB53FR - The Amount of Boom Natural Drop Is Great

TROUBLESHOOTING
BOOM
V-32TB53FR
2
Inspect for internal leak-
age in the boom cylinder.
Repair or replace the boom
cylinder.
1
Is the amount of natural
fall within the standard?
Not within the standard.
Normal
Within the standard.
Faulty
Normal
THE AMOUNT OF BOOM NATURAL DROP IS GREAT.
1. Is the amount of natural drop within the
standard?
“II. Specifications, Standards for Judging
Performance”
2. Inspect for internal leakage in the boom
cylinder.
3. Perform a port relief valve switching test.
“V-30”
3
Does not change
Operation be-
came normal
The port relief valve is
faulty.
Repair or replace the port re-
lief valve.
Replace the housing block.
Perform a port relief
valve switching test.
The control valve is leaking
internally.