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 TM 55-1905-220-14-8
4-5. GENERAL (Continued).
Table 4-3. Portable Fire Pump (P-250) Power Head - Troubleshooting.
NOTE
portable fire pump. Tables 4-1A thru 4-3A apply to
the Prosser PE250 electric start portable fire pump.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Power head.
Step 1. Faulty, broken or cracked leaf valves.
Refer to paragraph 4-7.6.
Step 2. Faulty or blown cylinder head gasket.
Refer to paragraph 4-7.6.
Step 3. Exhaust ports clogged with carbon.
Refer to paragraph 4-7.6.
Step 4. Piston ring grooves clogged with carbon.
Refer to paragraph 4-7.6.
Step 5. Cylinder walls scored.
Refer to paragraph 4-7.6.
Step 6. Piston crown eroded or carboned.
Refer to paragraph 4-7.6.
4-16
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