4-35
Item
Description
Service action
Brake accumulator
Brake accumulator
precharge check
precharge check
※
The axles and hydraulic
oil must be at operating
temperature for this
check.
S t a r t a n d r u n e n g i n e fo r 3 0
seconds.
Stop engine and turn start switch to
ON and wait 5 seconds.
NOTE
NOTE : Engine oil pressure lamp
will be on due to no engine oil
pressure.
Count the number of times the
brake pedal can be fully depressed
before the low brake pressure
warning lamp comes ON.
LOOK
LOOK : Warning lamp
should not
come
ON in 1~5 applications.
Start engine and operate at low
idle.
Observe cluster while applying
brake pedal with maximum force.
LOOK/LISTEN
LOOK/LISTEN : Brake pressure
indicator must not come ON.
OK
OK
Check completed.
NOT OK
NOT OK
Make sure brake pedal is
not binding and keeping
brakes partially engaged.
Bleed brakes in group 3.
C h e c k b r a k e s y s t e m
pressure.
NOT OK
NOT OK
If light comes ON with
e n g i n e r u n n i n g ,
accumulator has lost it's
c h a r g e . I n s p e c t a n d
recharge accumulator.
Brake system leakage
Brake system leakage
check
check
Start engine and wait 30 seconds.
Stop engine.
Wait 2 minutes.
Turn start switch to ON and wait 5
seconds.
LOOK
LOOK : Brake oil pressure warning
lamp must not come ON within 2
minutes after stopping engine.
OK
OK
Check completed.
NOT OK
NOT OK
I f b r a k e l e a k a g e i s
indicated with brakes
released, check leakage at
accumulator inlet check
valve and brake valve. If
brake leakage is indicated
with brakes applied, check
for leakage at brake valve
and brake pistons.
Check individual
component leakage.
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...
