TM 5-3805-262-20
3-25. HYDRAULIC SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. BUCKET CLAMSHELL CYLINDER ASSEMBLIES OPERATING SLUGGISHLY OR POORLY (ALL OTHER
CYLINDERS OPERATE PROPERLY).
Step 1.
Start engine and turn loader completely to left to gain access to
control valve assembly spools and linkage.
Shut off engine and apply parking brake.
Position a machinist’s rule on control valve assembly body next to
clam spool.
Using end of clevis as a reference point, tell assistant to place
CLAM control lever in OPEN position while you measure travel of
c l e v i s .
Clevis should move 0.44 inch approximately.
Tell assistant to place CLAM control lever in HOLD position, then
move it to CLOSE position while you measure travel of clevis from
HOLD to CLOSE position.
Clevis should move 0.44 inch approximately.
a. If measurement is not 0.44 inch approximately, notify next high-
er maintenance level to adjust control valve assembly linkage.
b. If measurement is 0.44 inch, go to step 2 below.
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