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TM 10-4930-250-13&P
b.
PumpAssembly.
Rubberglovesshouldbewornwhenhandlingfuelingsystemcomponentsdueto thetoxic
effects of some fuel additives.
(1)
Position inlet check valve (19) in pump housing (10).
(2)
Position inlet screen (18) on pump housing (10).
(3)
Position inlet flange gasket (17) on pump housing (10).
(4)
Install inlet flange (16) on pump housing (10) using the four bolts (15).
(5)
Install bypass valve (14) in pump housing (10).
(6)
Install bypass spring (13) in pump housing (10).
(7)
Install bypass valve cap gasket (12) on bypass valve cap (11).
(8)
Install bypass valve cap (11) in pump housing (10).
Do not allow components of the shaft seal assembly (7) or the snap ring (8) to drop into
pump cavity as components are installed. During installation of shaft seal assembly note
the exploded view of the shaft seal assembly included as an inset on figure 5-3.
(9)
Install shaft seal assembly (7) on armature (9) shaft as follows.
(a)Install large O-ring (20) on armature (9) shaft, seating large O-ring (20) against rear wall of pump housing
(10)
(b)Install black carbon ring (21) with flat surface facing out.
(c)Install white ceramic ring (22) with notched surface facing out.
(d) Install small O-ring (23).
(e) Install washer (24).
(f) Install spring (25).
(g) Install washer (26).
(10)
Install snap ring (8) that secures shaft seal assembly (7) to armature (9) shaft.
(11)
Slide rotor (5) on armature (9) shaft over shaft seal assembly (7).
(12)
Align slots in rotor (5) with slot on armature (9) shaft. Install rotor key (6).
5-13
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