4-34
Item
Description
Service action
Service brake pump flow
Service brake pump flow
check
check
※
Hydraulic oil must be at
operating temperature
for the check.
Engine OFF.
Stop engine.
Operate brake pedal approximately
20 times.
Start engine and run at low idle.
R e c o r d n u m b e r o f s e c o n d s
required for low brake pressure
indicator lamp to go out.
LOOK
LOOK : Indicator lamp must go out
in less than
seconds from time
engine starts.
NOTE
NOTE : Indicator will not come on
approximately 1 second after
starting engine.
OK
OK
Check completed.
NOT OK
NOT OK
Check for brake circuit
leakage.
Go to next page.
IF OK
IF OK
I n s t a l l a c a p o n l i n e
connected to inlet of brake
valve and repeat pump
flow check.
If time does not decrease,
c h e ck fo r wo r n b ra ke
pump.
Service brake capacity
Service brake capacity
check
check
Engine running.
Select clutch cut-off mode to OFF.
Apply service brakes, release park
brake and put transmission in 2nd
forward.
Increase engine speed to high idle.
LOOK
LOOK : Machine may not move or
move at a very slow speed.
Repeat check three times to ensure
accurate results.
OK
OK
Check completed.
NOT OK
NOT OK
Check brake pressure.
IF OK
IF OK
Inspect brake disk.
Release
ON
P
OFF
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...
