Table 3-1. Operator/Crew Troubleshooting Table - CONT
TEST OR INSPECTION
APU - CONT
Check for loose jet start cock on air intake manifold.
Tighten thumbscrew on jet start cock (para. 2-3, item 7).
Check that decompression valve handle is downward in closed position.
Turn decompression valve handle downward to closed position (para. 2-3, item 9).
WHITE, BLUE, BLACK, OR DARK GRAY EXHAUST SMOKE IS OBSERVED (AFTER WARMUP)
Notify unit maintenance.
LOW OIL PRESSURE INDICATOR LIGHT IS LIT
a. Replenish with proper grade of oil (para. 3-3). The level should be between bottom and top
marks on oil level gage (dipstick).
b. If oil was added and oil pressure indicator light is lit, notify unit maintenance to check for low oil
Check engine coolant level.
If coolant level is low, add coolant as required.
Replenish with proper grade of oil (para. 3-3). The level should be between bottom and top marks on
oil level gage (dipstick).
BATTERY HAS LOW CHARGE
Check battery connections for looseness or corrosion.
Tighten connections (table 2-1, item 6, step e). If corroded, notify unit maintenance.