c. Report the malfunction to Unit Maintenance for
repair.
Problem 22: Lights Do Not Work
Probable Cause(s):
• Lamps burned out
• Circuit breaker(s) tripped
1. Lamps burned out:
a. If a single indicator will not illuminate when it
should, go to Step b. If multiple lamps do not
illuminate when they should, go to Step 2.
b. Report the burned-out indicator to Unit
Maintenance for repair.
2. Circuit breaker(s) tripped:
a. If the dome light and remote throttle indicator,
start-aid indicator, check engine indicator, winch
indicator, and crank-without-inject indicator do
not function, go to Step b. If other lamps do not
function, go to Step c.
b. Reset the horn/dome circuit breaker and the
start-aid circuit breaker, and retest the lamps.
Refer to “Monitoring Systems and Cab Features,
Circuit Breakers” and “Machine Features, Main
Circuit Breakers” in this section. If the lamps still
do not function, go to Step c.
c. Report the malfunctioning lamps to Unit
Maintenance for repair.
Problem 23: Cab Blower Produces Less Air Flow
Than Normal
Probable Cause(s):
• Circuit breaker tripped
• Cab air filters plugged
1. Circuit breaker tripped:
a. Determine if the blower motor operates when
the blower switch is moved to ON. If the blower
does not operate, go to Step b. If the blower
operates, go to Step 2.
b. Reset the air conditioning and blower motor
circuit breaker. If the blower operates but still
produces less air flow than normal, go to Step
2. If the blower does not operate, go to Step c.
c. Report the blower malfunction to Unit
Maintenance for repair.
2. Cab air filters plugged:
a. Clean the external and internal cab air filters. If
the blower still produces less flow than normal,
go to Step b.
b. Report the diminished air flow to Unit
Maintenance for repair.
98
Operation Section
Troubleshooting
TM5-2430-200-10
