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 TM 55-1905-223-24-3
f.
When the belt is tight, tighten the idler shaft nut (3) to 50 ft-lb (67.7 N ) torque.
m
g. Loosen the capscrew (2) 1/2 turn to prevent V-belt breakage during operation.
h. Install the water pump belt guard (21, Figure 2-14). Refer to Replacement step in this procedure.
REMOVAL
a. Drain coolant. Refer to Table 2-1, Item 24.
b. Remove the two capscrews (22, Figure 2-14), lockwashers (23) and flat washers (24) and remove the
water pump belt guard (21).
c.
Loosen the idler shaft nut (11).
d. Turn the capscrew (13) counterclockwise to release tension and remove the water pump V-belt (25).
Remove the nut (11) and washer (12) to remove the adjusting device (20). Remove the capscre (13)
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from the water pump body (10).
e. Remove the rim-clenching clamp (16, Figure 2-9) and disconnect the tube connection (1, Figure 2-
15). Refer to paragraph 2-28.
f.
Remove the four machine screws (3, Figure 2-14) and the assembled washer screw and flat washer
(4, 5) and remove the engine water outlet (2). Discard the gasket (1).
g. Remove the six capscrews (26 and 27) from the water pump body (10).
NOTE
The water pump must be removed carefully to prevent damage
to the impeller (8).
h. Remove the water pump body (10) from the engine.
i.
Remove gasket (6). Discard the gasket.
REPAIR
Repair of the water pump and idler group consists of replacement of parts listed in Materials/Parts.
a. Disassemble and replace adjusting device (20, Figure 2-14) parts as follows:
(1) Remove the machine thread plug (19) and remove the groove pulley (18).
(2) Remove the retainer ring (14), the spacer ring (15), and annular ball bearing (16) from the idler
shaft (17).
2-88
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