SPECIFICATIONS

Vehicle Systems Testing And Adjusting
Problem: Brakes will not make application after
being bled.
Probable Cause:
1. Leak in hydraulic line or connection.
2. Damaged cup seal or boot in the master cylinder.
Problem: Brake oil low in master cylinder reser-
voir, fluid must be added frequently.
Probable Cause:
1. Leak in hydraulic line or connection.
2. Damaged ring seal in the master cylinder.
3. Leak in the disc assemblies.
Parking Brakes
Problem: Brake will not make application.
Probable Cause :
1. Parking brake assembly out.
2. Parking brake control cable out of adjustment.
3. Worn brake band.
Electric Motors
Before an analysis is made of any electric motor
problems, always make reference to the troubleshooting
section of MicroController Control System Module.
If an electrical failure or an overload of the motor
is present, personnel must not breathe the toxic
fumes which are a product of the burnt insulation.
All power must be disconnected from the motor
before any inspection is made to find the failure.
The area around the motor must be well ventilated
(air flow) and the motor is to be cooled before any
repair work is done. Water must not be used on
any electrical equipment because of the danger of
electrical shock. If a fire is present, disconnect the
electrical power and use a carbon dioxide extin-
guisher to put the flame out.
Do not operate the drive motor without a load as too
much speed may cause damage to the motor and
injury to personnel.
NOTICE
Never use air pressure that is more than 30 psi (205
kPa) and make sure the air line is equipped with a
water filter.
Problem: Hydraulic pump motor will not operate.
Probable Cause :
1. Bad connections or fuses.
Check battery connections. Check battery con-
nector
Check the key fuse.
Check the hydraulic pump motor for possible
reasons for a bad fuse.
Some causes are :
a) Operation with too high hydraulic pressures.
b) Operation with too much currect draw.
c) Possible short circuit in motor.
2. Key switch, seat switch or line contactor not
closed.
Close the seat and key switch. Use a multime-
ter(VOM) to check power flow thru the seat
switch, key switch, line contactor coil and line
contactor. The key switch, seat switch and line
contactor must be closed for the power steering
pump to operate.
WARNING
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