TM 9-2330-381-14
Table 3-1. Operator/Crew Troubleshooting Table - CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
APU - CONT
7.
BATTERY HAS LOW CHARGE - CONT
Step 2.
Check fluid level in battery.
If fluid level is low, notify unit maintenance.
8.
GLOW PLUG HEATS SLOWLY OR FAILS TO HEAT
Step 1.
Check battery connections for looseness or corrosion.
Tighten connectors (table 2-1, item 6, step e). If corroded, notify unit maintenance.
Step 2.
Check fluid level in battery.
If fluid level is low, notify unit maintenance.
Step 3.
Turn APU start switch to GLOW and observe GLOW indicator (para. 2-2, item 1).
If GLOW indicator lamp does not light within 15 to 20 seconds, notify unit maintenance.
9.
APU JUMP START SYSTEM INOPERABLE
Step 1.
Check operation of the auxiliary start system safety circuit module.
a. Press test switch button on safety circuit module. If an audible "click" is not heard, proceed to
step 2, below.
b. If an audible "click" is heard and APU does not crank over, notify unit maintenance.
Step 2.
Check for proper 12 Vdc connection at tractor 12/24 Vdc series-parallel battery installation (para.
Step 3.
Check clamp connections to tractor batteries. Make sure red positive (+) clamp is making good
connection to battery terminal and that black negative clamp (-) is making good connection to tractor
frame.
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