Specifications

Operational Checkout
– – –1/1
BOOM DOWN CHECK
VALVE LEAKAGE
CHECK
Heat hydraulic oil to
operating temperature.
(See Hydraulic System
Warm-up Procedure in
this group.)
T7010AO –UN–15MAR89
Position bucket flat on ground.
Run engine at slow idle for 2 minutes.
LOOK: Bucket MUST NOT drift up.
OK: Go to next check
NOT OK: Replace boom
lower check valve. Go to
your authorized dealer.
– – –1/1
PILOT CONTROLLER
CHECK
T7827AI2 –UN–24AUG92 T7827AD –UN–24AUG92
Stop engine. Turn key switch to OFF position.
Move control lever to all positions and then release.
LOOK: Lever must return to neutral when released from all positions.
OK: Go to next check.
NOT OK: Repair pilot
controllers. Go to your
authorized dealer.
– – –1/1
RETURN-TO-DIG CHECK
Run engine at slow idle.
T7827AI3 –UN–24AUG92
Position bucket fully dumped just above ground level.
Move control lever to return-to-dig detent position and
release.
LOOK: Bucket must rollback to the level position and
control lever must return to neutral.
NOTE: If bucket is in a rolled back position when key
switch is turned ON, control lever must be returned to
neutral manually if placed in the return-to-dig detent
position. After bucket is dumped once, return-to-dig will
work normally.
OK: Go to next check
NOT OK: Check fuse.
IF OK: Adjust switch.
See Adjusting Return-To-
Dig in Operating the
Machine chapter.
95–20
PN=228