TM 5-3805-293-23-1
0011
Table 1. Engine Troubleshooting Procedures for the 120M Motor Grader - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Alternator Will Not
Battery Analyzer Displays
Charge Batteries - Con-
REPLACE BATTERY - Replace faulty
tinued
battery (WP 0194). If equipped with
arctic heater and arctic heater battery
is faulty, replace arctic kit battery (WP
0334).
3. Inspect battery cables and alter-
Connections Dirty/Loose - Clean
nator cables (WP 0066, WP 0195,
and tighten all connections as
WP 0337, WP 0338) for frays,
required (WP 0066, WP 0195, WP
damage, corrosion, and loose
0337, WP 0338).
connections.
Battery Cables Damaged - Replace
battery cables as needed (WP 0195,
WP 0337, WP 0338).
Battery Cable Connections OK -
Proceed to step 4.
4. Perform Battery Cables and Alter- Battery Cable(s) Faulty - Replace
nator Cables Test (WP 0042).
battery cable(s) (WP 0195). If
equipped with arctic kit, replace arctic
kit battery cables (WP 0337, WP
0338).
Alternator Cable(s) Faulty - Replace
alternator cable(s) (WP 0066).
Alternator and Battery Cables OK -
Proceed to step 5.
5. Perform Alternator Charging Sys-
Alternator Charging Current Low -
tem Test (WP 0040).
Replace alternator (WP 0094).
Alternator Output Voltage Low -
Replace alternator (WP 0094).
3. Batteries Do Not Main-
1. Check that no electrical
Electrical Components Left in ON
tain a Charge
components have been left on
Position - Turn auxiliary devices OFF
and drained the batteries (TM 5-
(TM 5-3805-293-10).
3805-293-10).
2.
Perform Battery Test (WP 0041).
Battery Fails Battery Test - Replace
defective battery (WP 0194).
3. Perform Alternator Charging
Battery Cables Damaged - Replace
System Test (WP 0040).
battery cables as required (WP 0195).
Alternator Not Charging - Replace
alternator (WP 0094).
0011-4
