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SECTION 6 – MAINTENANCE & TROUBLESHOOTING
6-1.
ROUTINE MAINTENANCE
IMPORTANT: Every six months inspect the labels on
this unit for legibility. All precautionary labels must be
maintained in a clearly readable state and replaced
when necessary. See the Parts List for part numbers of
precautionary labels.
WARNING: ELECTRIC SHOCK can kill.
Do not touch live electrical parts.
Stop engine, and disconnect negative (–)
battery cable from battery before inspecting,
maintaining, or servicing.
MOVING PARTS can cause serious injury.
Keep away from moving parts such as fans,
belts, and rotors.
HOT ENGINE PARTS can cause severe
burns.
Wear protective gloves and clothing when
working on a hot engine.
Maintenance to be performed only by qualified
persons.
Table 6-1. Maintenance Schedule
Frequency*
Every Month
Units in heavy service environ-
ments:
Check labels, cables, and wiring;
clean internal parts (see Section
6-1A and Section 6-1B).
Every 3 Months
Check cables and wiring (see
Section 6-1A.
Every 6 Months
Check all labels (see IMPORTANT
block, Section 6-1). Clean internal
parts (see Section 6-1B).
*Frequency of service is based on units operated at
40 hours per week. Increase frequency of mainten-
ance if usage exceeds 40 hours per week.
A. Cables And Wiring
WARNING: Read and follow safety informa-
tion at beginning of entire Section 6-1 before
proceeding.
Check wiring, cable, and bimetal jumper bar connec-
tions for tightness and flaws. Ensure that all connections
are clean and tight. Check the insulation for breaks or
other signs of damage. Repair or replace cables or wir-
ing as necessary. Check for any contact by bimetal
jumper bar to surfaces or components other than the in-
tended connections. Move bimetal jumper bar to pre-
OM-880 Page 18
Maintenance
vent contact with other surfaces or components be-
tween connection points.
B. Internal Cleaning
WARNING: Read and follow safety informa-
tion at beginning of entire Section 6-1 before
proceeding.
Keep the unit clean by blowing out the inside with clean,
dry, compressed air. Clean any dirty connections.
Check and tighten any loose connections.
6-2.
RESETTING CIRCUIT BREAKERS (Figure
4-1)
The circuit breakers are automatic-trip type and are not
manually operable. When the circuit breaker button is in,
the circuit breaker is functional. When the button is out,
the breaker is open and not functional.
If a circuit breaker trips when equipment use begins, a
fault is probable present in the equipment. If a breaker
trips after prolonged equipment use, an overload condi-
tion is probably present. Should a breaker trip, proceed
as follows:
WARNING: ELECTRIC SHOCK can kill.
Do not touch live electrical parts.
Stop engine, and disconnect equipment from
deenergized receptacle before repairing a
fault or overload.
1.
Locate and repair fault or reduce receptacle load.
2.
Reconnect equipment to receptacle and start en-
gine.
3.
Reset circuit breaker (depress button); it may be
necessary to allow a cooling period before the
breaker can be reset.
4.
Resume operation.
6-3.
CIRCUIT BOARD PC3 OR PC4 REPLACE-
MENT PROCEDURE (Figure 6-1)
WARNING: ELECTRIC SHOCK can kill.
Do not touch live electrical parts.
Stop engine, and disconnect negative (–)
battery cable from battery before inspecting,
maintaining, or servicing.
MOVING PARTS can cause serious injury.
Keep away from moving parts such as fans,
belts, and rotors.
If a printed circuit board is at fault for a problem with the
unit, replace the board using the following procedure.
Do not attempt board repair. Contact the nearest Fac-
tory Authorized Service Station/Service Distributor for
correct replacement part.
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Troubleshooting
