Takeuchi TB215R - Boom Cylinder Operation Is Slow or Lacks Force

TROUBLESHOOTING
BOOM
3
5
BOOM 5G0AX001
Boom cylinder operation is slow or lacks force.
1. Is the speed of the boom cylinder within specs?
“2. Service data, Performance criteria”
2. Check the pilot valve.
“The boom cylinder does not move, 2. Check
the pilot valve”
3. Check the spool operation.
“The boom cylinder does not move, 3. Check
the spool operation”
4. Test by replacing the port relief valve.
“The boom cylinder does not move, 4. Test by
replacing the port relief valve”
1
Is the speed of the boom
cylinder within specs?
Within specs
Normal
Out-of-specs
2 Check the pilot valve.
Faulty
Repair or replace the pilot
valve.
Normal
3
Check the spool opera-
tion.
Faulty
Repair or replace the housing
block.
Normal
4
Test by replacing the port
relief valve.
Problem solved
The port relief valve is
faulty.
Repair or replace the port re-
lief valve.
No change
5 Check the boom cylinder.
Faulty
Repair or replace the boom
cylinder.