TM 5-4310-451-14
5-72. WATER PUMP MAINTENANCE (Con’t).
e. INSTALLATION
1.
Install new performed packing (20) on water
pump (12) and Install water pump on balance
cover (17) and hoses (5 and 8).
2.
Install new lockwasher (18) and screw (19).
3.
Install washer (16), new lockwasher (15), and
screw (14).
4.
Install new lockwasher (6) and screw (7).
5.
Install one Y6 in. -18 UNC x 2 in. screw (38)
into impeller (27).
NOTE
Limits for gear backlash are 0.001-
0.006
In.
(0.025-0.152
mm).
If
backlash
cannot
be
corrected,
replace water pump.
6.
Place plunger of dial indicator against screw
(38). Move impeller (27) and read backlash.
7.
If backlash does not read 0.001-0.006 in. (0.-
0.152 mm), loosen screws (19 and 14) and pivot
water pump (12) to obtain proper backlash.
8.
Torque screws (19 and 14) to 25 Ib.-ft. (34
Nom).
9.
Remove screw (38).
10. Torque screws (7, 14, and 19) to 45-50 lb.-ft.
(61-68 Nom).
5-283
