6-45
Item
Description
Service action
Bucket leveler
(positioner) check
Run engine at low idle.
Position bucket fully dumped just
above ground level.
Move control lever to bucket
l eve l e r d et e n t p o s i t i o n a n d
release.
LOOK : Bucket must rollback to
the level position and control lever
must return to neutral.
If bucket is in a rolled back
position when key is turned ON,
control lever must be returned to
neutral manually if placed in the
bucket leveler detent position.
After bucket is dumped once,
bucket leveler will work normally.
OK
Check complete.
NOT OK
Do bucket leveler checks.
Boom height kickout
check
Run engine at low idle.
Position bucket flat on ground.
Move control lever to boom raise
detent position and release.
LOOK : Boom must raise to the
set height and stop.
Control lever must return to
neutral.
OK
Check complete.
NOT OK
Do boom height kickout
check.
Cycle time check
H e a t hy d r a u l i c o i l t o
operating temperature.
Run engine at high idle.
Function
Boom raise
Boom lower
Bucket dump
Bucket rollback
Steering [No. of
turns]
Operating condition.
Bucket flat on ground to full
height.
Full height to level ground.
Boom at full height.
Boom at full height.
Frame stop to frame stop.
Maximum cycle time
5.8sec
3.9sec
1.2sec (
★
2.0)
1.6sec (
★
2.2)
3.5 turns
★
: HL955TM
OK
Check complete.
NOT OK
Go to slow hydraulic
functions in group 2.
Summary of Contents for HL955
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