CHAPTER 8
FUEL TRANSFER
8-1 FUEL PUMP. (Figure 8-1)
NOTE
These instructions cover service of the pump while installed. For easier handling,
we recommend removing the pump from the tank and using a vise to hold it
whenever it is possible.
8-1.1 Replacement of Rotor, Vanes or Shaft Seal.
a. To prevent vanes from dropping thru inlet port, loosen pump cover screws (14). Hand hold pump cover (15)
firmly against pump housing (4) and remove loosened screws.
b. Slide pump cover aside partially exposing rotor (18) and transfer holding action from pump cover to rotor.
c. Keep vanes (19) and rotor pressed fully in pump cavity while turning rotor to remove vanes. Remove vanes
one at a time at 2 O'clock position.
d. Remove key (17) and rotor.
e. Replace in reverse order. Make sure outer edge of vanes slope away from direction of rotor rotation
(counterclockwise).
f. With rotor removed, the 6 piece shaft seal (20-25) can be picked out with needlenose pliers. Replace in
sequence shown in exploded view, figure 8-1.
8-1.2 Check Valve, Bypass, Strainer Service or Replacement.
a. For easier handling, remove hose (64) and nozzle (63).
b. Remove four screws (14) beneath housing (4) and lift pump housing (4) off; freeing bypass (12) and spring (13).
Check valve assembly (11) and strainer (9) can be withdrawn from inlet cavity of base adapter (8) for cleaning
or replacement.
c. To reassemble, insert screen into inlet cavity followed by "O" ring (10) and check valve assembly (11).
d. Lay gasket (3) on base (8) oriented so shape of gasket matches pump housing and aligned to match screw
holes. Place bypass spring (13) in recess in base and stack bypass (12) on top of spring (13) with closed end
up.
e. Thread bypass and spring into bypass cavity of pump housing during assembly of housing to base.
8-1
