|
| |
TM 5-4210-220-12
Table 4-2 UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3d
APU ENGINE STARTS BUT STOPS
Step 1
Water in fuel system or fuel contamination, check fuel.
Drain fuel tank replace filter, add new fuel and prime.
Step 2
Air in system.
Air leak between tank and fuel pump check all hoses/connections.
Step 3
Sample fuel.
Drain tank, replace fuel filter and refill with proper/clean fuel.
Step 4
Engine timing wrong, check timing.
Adjust timing, (see para. 4-15).
Step 5
Fuel filter blocked.
Replace fuel filter.
3e
ERRATIC APU ENGINE OPERATION
Step 1
Sample fuel.
Drain tank, replace fuel filter and refill with proper/clean fuel.
Step 2
Check fuel filter.
Replace filter if blocked.
Step 3
Remove fuel tank cap. If engine runs normally, vent is blocked.
Unblock vent.
Step 4
Low cylinder compression pressure, check with gage.
Overhaul engine, (see para. 4-15).
Step 5
Governor out of adjustment.
Overhaul governor, (see para. 4-15).
Step 6
Check truck battery charge.
Recharge batteries if very low
4-27
|
