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TM10-3930-660-20
5-4.
FUEL TRANSFER PUMP- REPLACE/TEST (Cont’d)
TESTING OF TRANSFER PUMP PRESSURE
AND FLOW
1.
2.
3.
PLACE AUXILIARY FUEL SHUT-OFF SWITCH
IN “OFF” POSITION, TM10-3930-660-10.
REMOVE FUEL LINE (4) FROM TRANSFER
PUMP (3).
TEST TRANSFER PUMP (3) FOR ADEQUATE
VOLUME .
a.
b.
c.
Connect test hose to pump (3) at
port where fuel line (4) was
removed.
Position end of test hose in
suitable container.
Crank engine for thirty seconds.
Transfer pump (3) should produce at
least 0.7 U.S. quart of fuel in
container during step 3c.
If fuel
volume is too low, pump (3) should be
replaced.
Refer to removal and
installation sections of this paragraph.
d. Remove test hose from transfer
pump (3).
4. TEST TRANSFER PUMP (3) FOR ADEQUATE
PRESSURE .
a. Connect pressure gauge to transfer
pump (3) at port where fuel line
(4) was removed.
b. Crank engine and observe reading
on gauge.
Transfer pump (3) should provide between
3 to 5 psi when engine is cranked. If
fuel pressure is too low, transfer pump
(3) should be replaced. Refer to
removal and installation sections of
this paragraph.
5.
6.
7.
c. Remove pressure gauge from
transfer pump (3).
INSTALL FUEL LINE (4) TO TRANSFER
PUMP (3).
BLEED FUEL LINE (4). REFER TO STEP 7
OF “INSTALLATION” SECTION IN THIS
PARAGRAPH .
PLACE AUXILIARY FUEL SHUT-OFF SWITCH
IN “ON” POSITION, TM10-3930-660-10.
5-6
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