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Page Title:
Table 19. Fuel Tank (M49A2C) Troubleshooting Procedures. |
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 TM 9-2320-361-24-1
0006 00
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
Table 19. Fuel Tank (M49A2C) Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Check operation of discharge
1. If control levers are not operating
2. DELIVERY PUMP
valve control levers.
properly, remove and inspect
DISPENSES FUEL SLOWLY
(WP 0264 00).
FROM BOTH TANKS
(Contd)
2. If control lever assembly
components are defective, replace
(WP 0264 00).
5. Check transfer case PTO
If transfer case PTO is not
operation.
operating, refer to WP 0006 00,
table 17, malfunction 4.
1. Check discharge control cables
Lubricate discharge control cable if
3. FUEL DOES NOT PUMP
for proper lubrication
necessary (WP 0020 00).
OR PUMPS SLOWLY
FROM SELECTED TANK,
AND FUEL DRAINS
2. Check discharge control cable for
If discharge control cable is broken
SLOWLY FROM SELECTED
breaks or kinks.
or kinked, replace (WP 0264 00).
TANK USING GRAVITY
3. Check discharge control cable for
If control cable needs adjustment,
PROCEDURES
proper adjustment.
remove slack in cable
(WP 0264 00).
4. Inspect discharge valve tubes for
If discharge valve tubes are bent,
bent, crushed, broken, or leaking
crushed, broken, or leaking, replace
tubes.
(WP 0266 00).
5. Inspect discharge valves for
If discharge valves are broken or
proper operation.
inoperative, replace (WP 0263 00).
1. Check delivery pump propeller
1. If shaft is broken, replace
4. FUEL TANK
shaft for broken universal joints
(WP 0292 00 or WP 0293 00).
COMPARTMENTS
or broken shaft.
CANNOT BE SUCTION
2. If universal joints are broken,
FILLED
replace (WP 0141 00).
2. Perform fuel filter separator
If fuel filter separator is restricted,
check (TM 9-2320-361-10).
replace (WP 0286 00).
3. Check delivery pump strainer for
1. If strainer is restricted, clean or
restrictions.
replace (WP 0284 00).
NOTE
If No. 2 diesel fuel is being used
and ambient air temperature is
32 F (0 C), the outlet pressure
may fall as low as 5 psi (34.5 kPa).
This could cause slow or no delivery
of fuel to delivery pump. Refer to
TM 9-2320-361-10 for fuel
separator inlet and outlet pressure
differences.
2. If fuel system is clean and
pressure is low, replace delivery
pump (WP 0280 00).
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