P-9-TM-457-35 T.O. 35C2-3-442-2
TM-07464A-35 TM 5-6115-457-34
b. Allow shaft assembly to cool. Install
g, Inspect gear teeth for nicks, burrs,
cracks and broken teeth. Nicks and burrs
water pump seal (36) in housing (42) using
an installation tool. Hand pack bearings
that extend below the hardened surface of
(22 and 34) with an approved grease. Install
the gear teeth are cause for rejection of
shaft assembly into housing.
the gear.
h. Inspect gear teeth for wear that may
c. Place seal ring (33) and ceramic
have destroyed the original tooth shape.
ring (32) onto shaft and seat into housing
If this condition is found, replace gear.
(38) and press seal and spring assembly
(31) until carbon washer contacts ceramic
i. Discard seals and gaskets.
ring.
8-122. REPAIR.
d. Slide impeller (30) onto shaft (35).
Install washer (29) and nut (28). Tighten
a. Remove minor nicks and burrs
nut slowly forcing the impeller over the
using a suitable file or hone.
tappered shaft surface until washer (29)
bottom out on shaft shoulder.
b. Repair minor thread damage using
a suitable thread chaser.
e. Torque impeller nut (28) from 25 to
8-123, REASSEMBLY.
35 foot pounds.
Refer to figure 8-28, and reassemble
f. Check impeller tip clearance between
water pump in the reverse order of index
backside of impeller and housing. Clear-
numbers assigned. Pay particular
ance should be between 0.010 and 0.030
attention to the following:
inch. If clearance is not within limits
disassemble and reassemble pump to
a. If bearing (34) is being replaced,
achieve proper clearance.
gear (23) and bearing (22) must also be
removed from shaft (35) by preheating
shaft assembly in oil to a temperature of
8-124. INSTALLATION.
300 F. Reassemble in reverse order be-
fore installing shaft (35) in housing (42).
Refer to Operator and Organiza-
Make sure bearing housing (26) is installed
tional Maintenance Manual, and install
on shaft after pressing bearing (34) on
water pump group.
shaft (35).
8-63
