Takeuchi TB175W, Руководство по ремонту

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TROUBLESHOOTING
BOOM
V-26
TB175W
2
3
Inspect for internal leak-
age in the boom cylinder.
Perform a port relief
valve switching test.
Repair or replace the boom
cylinder.
Repair or replace the port re-
lief valve.
1
Is the amount of natural
fall within the standard?
Not within the standard.
Normal
Does not change.
Within the standard.
Faulty
Operation be-
came normal.
The control valve is leaking
internally.
The port relief valve is
faulty.
Normal
THE AMOUNT OF BOOM NATURAL DROP IS GREAT.
Replace the housing block.
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.
“V-23~24”
3. Perform a port relief valve switching test.
“V-21”