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 TM 55-1905-223-24-5
Table 2-2. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Make sure the return line does not have any loops or is not crimped.
(3)
Maximum reading should be 6.5 in Hg (165 mm Hg) with check valves.
b.
If restriction is above maximum, Check lines or tank vents for obstructions.
STEP 4.
Check to see if throttle linkage is adjusted wrong.
a.
Adjust linkage (PMCS Table 2-1, Item No. 7).
b.
Replace fuel pump (para. 2-33).
23. Engine will not reach rated speed when loaded.
STEP 1.
Check for defective tachometer. Replace tachometer (para. 2-22).
STEP 2.
Check to see if throttle linkage is set wrong. Adjust throttle linkage (PMCS Table 2-1,
Item No. 7).
STEP 3.
Check to see if fuel suction line is restricted. Refer to Malfunction 17, STEP 4.
STEP 4.
Check for defective fuel pump. Refer to Malfunction 17, Steps 5 and 8.
24. Low power.
STEP 1.
Check air filter. Replace air filter (para. 2-25).
STEP 2.
Check to see if fuel suction line or fuel filter is restricted. Refer to Malfunction 17, STEP
4.
STEP 3.
Check to see if lubricating oil level is too high. Drain oil to proper level.
STEP 4.
Check to see if throttle linkage adjustment is wrong. Refer to PMCS Table 2-1, Item No.
7.
STEP 5.
Check to see if intake or exhaust system is restricted.
a. Refer to Malfunction 14, STEP 3 for intake.
b. Refer to Malfunction 14, STEP 4 for exhaust.
STEP 6.
Check for air in fuel. Refer to Malfunction 18, STEP 5.
2-47
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