TM 5-3825-270-23&P
0023
Is engine speed erratic when set to 1500 rpm?
NOTE
When normally discharging from a water station, engine rpm should be increased and set to
a minimum of 1500 rpm to alleviate erratic engine speed.
1.
Start engine. (TM 5-3825-270-10)
2.
Operate engine at 1500 rpm. (TM 5-3825-270-10)
3.
Monitor engine performance while discharging from water hose or other water station.
4.
If engine speed is normal, do not shut down engine.
CONDITION/INDICATION
Is engine speed erratic when set to 1500 rpm?
DECISION
No - Go to step 4. (Step 4 - Does water pump exhibit excessive noise?)
Yes - Go to Engine Surges. (WP 0010)
STEP 4
Does water pump exhibit excessive noise?
1.
Monitor water pump for excessive noise.
2.
Shut down engine. (TM 5-3825-270-10)
CONDITION/INDICATION
Does water pump exhibit excessive noise?
DECISION
No - Replace water pump assembly. (WP 0198) Verify problem is solved. (Step 5 - Is water pressure erratic?)
Yes - Go to Excessive Pump Noise. (WP 0024)
STEP 5
Is water pressure erratic?
Start engine and ensure pump pressure is normal. (TM 5-3825-270-10)
CONDITION/INDICATION
Is water pressure erratic?
DECISION
No - Your original problem has been resolved.
Yes - If the problem still exists, it is possible that another fault exists or that another troubleshooting procedure
applies. If this was the first time through the task, restart the same symptom troubleshooting fault task.
END OF WORK PACKAGE
0023-2
