TM 5-3895-342-12
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. ENGINE STOPS
Step 1. Inspect tank to see if it is empty.
Refill empty or low fuel tank.
5. ENGINE OVERHEATS
Step 1. Check to see if low grade of gasoline is used.
Drain fuel tank and fill with correct grade of gasoline. Use gasoline that conforms to
Military Specifications MILG-3056 or MIL-F-5572.
Step 2. Inspect to see if cooling air circulation is restricted.
Move mixer to provide proper air circulation.
Step 3. Check to see if engine is overloaded.
If overloaded, reduce amount of batch.
Step 4. Check to see if engine crankcase oil level is low.
Fill to full mark on dipstick.
6. ENGINE KNOCKS.
Step 1. Check to determine if gasoline is of a poor grade or low octane rating.
Drain fuel tank and fill with correct grade of gasoline. Use gasoline that conforms to
military specifications MIL-G-3056 or MIL-F-5572.
Step 2. Inspect crankcase oil level.
If low, fill to full mark on dipstick.
7. ENGINE BACKFIRES THROUGH CARBURETOR
Step 1. Inspect for water or dirt in gasoline.
If water and dirt is discovered, drain contaminated gasoline from fuel tank and fill with
clean gasoline.
Step 2. Check engine to see if it is cold.
If cold, allow engine to warm up before applying load.
Step 3. Check to see if gasoline is of a poor grade.
Drain fuel tank and fill with correct grade of gasoline. Use gasoline that conforms to
Military Specifications MIL-G-3056 or MIL-F-5572.
8. WATER PUMP FAILS TO TAKE PRIME
Step 1. Check to see if there are loose hose connections.
If loose, tighten all hose clamps and pipe fittings.
Step 2. Inspect end of suction line to see if it is clogged.
If clogged. clear suction line.
9. WATER PUMP FAILS TO PUMP.
Step 1. Inspect pump to wee if it is properly primed.
If not prime pump.
10. INSUFFICIENT WATER THROUGH PUMP
Step 1. Check for air leak in suction line.
If air leak is present tighten suction line.
Step 2. Check to see if suction lift is too high or total lift is more than that for which pump is intended.
Move mixer closer to source of water
3-8. Fuel Strainer Service
Service the fuel strainer as instructed on figure 3-2.
Change 1
3-4
