3-62. FUEL PUMP MAIN HOUSING REPAIR (Contd)
d. Assembly (Contd)
Barrel spring (21), barrel
(20), and new O-rings
(17), (18), and (19) (Contd)
If barrel contains a 15 plunger lead in chamfer, do not use glide ring forming tool.
i. Assemble gasket washer (7),
retainer washer (8) with rounded
edge toward bellows (9) (bellows
with part number toward piston),
piston (10), retainer washer (8),
and jamnut (12) on air fuel control
piston insert (6).
j. Hold assembly by hex on air fuel
Tighten nut (5) to 30-40 lb-in.
control piston insert (5) and center
bellows AFC piston (10) and retainer
washer (8) without twisting bellows
(9). Ensure parts are centered.
k. Wrap throttle plunger (13) threads
with Teflon tape and install throttle
plunger (13) into center bolt until
threaded end of throttle plunger (13)
is flush with center bolt surface.
Install jamnut (12), but leave loose.
l. Slide throttle plunger (13) and
piston bellows assembly in barrel
(20). Insert assembly very
carefully to avoid damage to glide ring.
m. Cup bellows (9) between piston
(10) and housing (38) to ensure
bellows (9) do not wrinkle when
cover is installed.
n. Line up bellows holes with
Screws are to be tightened to
housing and cover plate holes.
30-33 lb-in. (3.4-3.7 Nm). Tighten
Install screws and washers.
after setting AFC on test stand.
o. Install lubricated O-ring (30) on
AFC needle valve (29) using
assembly tool (3375148).
p. Install check valve (58) on cover plate.
Spring (14) and AFC shim
a. Check spring as follows:
(1) Put 10 lb (4.54 kg) of load
on spring (14).
(2) Compress spring 0.300 in.
Discard spring (14) if not within
(7.62 mm) more than dimension of step 1.
37.5-42.4 lb (17.0-19.2 kg) of step 1.
b. Install AFC shim (15) and
spring (14) on housing (38).