Takeuchi TB53FR - Boom; The Boom Cylinder Doesnt Move

MACHINE CONFIGURATION
BOOM
V-29 TB53FR
1
3
4
Inspect the operation of
actuators other than the
boom cylinder.
Inspect the operation of
the spool.
Perform a port relief
valve switching test.
Repair or replace the pilot
valve.
Repair or replace the housing
block.
Repair or replace the port re-
lief valve.
Normal
2
5
Inspect the pilot valve.
Normal
Normal
Does not change.
Faulty
Faulty
Operation
became normal.
Repair or replace the boom
cylinder.
Inspect the boom cylin-
der.
Faulty
THE BOOM CYLINDER DOESN’T MOVE.
The port relief valve is
faulty.
1. Inspect the operation of actuators other than
the boom cylinder.
Inspect if the operation of the boom cylinder only
is faulty by the table at right. If its operation is
faulty, inspect the main relief valve and the hy-
draulic pump.
“V-6”
Right Travel
Relief Valve R1 Pump P1
Lever Operated Places inspected