JLG Skytrak 6036 Service Manual page 276

Section 10. Electrical System
Trouble
Blower fan motor
doesn't run.
Cab Heater for Enclosed Cab—HEATER FAN MOTOR AND COIL
Blower fan motor
doesn't run.
Hydraulic Pump for Emergency Braking and Steering—GENERAL
Hydraulic pump
fails to operate
when engine oil
pressure is low.
Hydraulic pump
operates when
engine oil
pressure is
normal.
10-82
Probable Cause
Cab Heater for Enclosed Cab—CAB HEATER SWITCH
1. Check circuit breaker.
2. Check continuity through
blower switch in high and
low positions.
3. Check motor and fan for
mechanical binding.
4. Open heater ground at
mechanical support.
1. Check circuit breaker.
2. Check motor and fan for
mechanical binding.
3. Check continuity through
blower switch in high and
low positions.
4. Open heater ground at
mechanical support.
1. Low oil pressure switch is
defective.
2. Circuit breaker is stuck in
open position.
3. Defective hydraulic pump
motor.
4. Hydraulic pump is
defective or "frozen".
1. Low oil pressure switch is
defective.
2. Short circuit in wiring.
Remedy
Replace circuit breaker if
open.
Replace switch if defective.
Realign motor and fan as
required to relieve binding.
Check ground at mechanical
support for presence of tooth-
type washer.
Replace circuit breaker if
open.
Realign motor and fan as
required to relieve binding.
Replace switch if defective.
Check ground at mechanical
support for presence of tooth-
type washer.
Refer to troubleshooting
instructions for oil pressure
switch.
Replace circuit breaker.
Repair or replace hydraulic
pump motor.
Repair or replace hydraulic
pump.
Refer to troubleshooting
instructions for oil pressure
switch.
Remedy cause of short circuit.
Model 6036 S/N 9B0499 and Before
Reference
See para. 10.4
See para. 10.12.1
See para. 10.12.2
See para. 10.12.2
See para. 10.4
See para. 10.12.2
See para. 10.12.1
See para. 10.12.2
and item 3, Fig.
10.67
See para. 10.13.1
See para. 10.4
See para. 10.13.2
or 10.13.3
See para. 10.13.2
or 10.13.3
See para. 10.13.1
See para. 10.3