TM 5-4320-302-14
Table 5-1. Direct Support Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE STARTS BUT RUNS UNEVENLY, STALLS, OR SURGES
WARNING
Priming discharge mixture of water and exhaust gases may
cause severe burns or injury. Wear gloves and safety glasses
when priming pump.
Stand clear of venturi during priming.
CAUTION
Prime the centrifugal pump as soon as possible after engine
starts. Rotation of impeller without water in volute will
damage pump components.
Step 1. Check for binding speed control lever arm or throttle cable assembly. Start
engine. Watch the moving speed control lever arm while increasing and decreasing
engine speed with the throttle cable assembly T-handle.
If components bind, repair or replace throttle cable assembly (para 4-16).
Step 2. Check for mistimed injectors.
Time injectors (para 6-4).
Step 3. Check for faulty injectors. Remove and test injectors (para 5-16).
Repair or replace faulty injectors (para 5-16).
5-3
