1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
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5 - 4 COOLING SYSTEM<br />
The bearing and shaft are retained in the pump housing<br />
by the shaft bearing retainer (6).<br />
WATER PUMP REMOVAL:<br />
1. Drain the cooling system by opening drain cock at lower<br />
right side of radiator and remove the pipe plug from left<br />
rear side of cylinder block.<br />
NOTE: It is not necessary to remove the radiator to<br />
remove the pump; however, use care when removing and<br />
Installing the pump.<br />
2. Loosen the bolt in the fan belt and generator adjusting<br />
bracket and move generator in toward the cylinder block<br />
to remove the fan belt.<br />
3. Disconnect hose from the water pump inlet.<br />
FIGURE 2<br />
WATER PUMP<br />
(6 Cylinder)<br />
The water pump features a permanently lubricated ball<br />
bearing (18), Figure 3, for the pump shaft and non-adjustable<br />
packing (13). A permanent seal, which makes repacking<br />
unnecessary, consists of a graphite washer (14) adjacent<br />
to the impeller (12), backed with a neoprene seal (13) and<br />
brass spring and retainer (8) for maintaining constant contact<br />
on these two units. The graphite washer (14) is prevented<br />
from turning in the impeller (12) and housing by<br />
means of four ears which are retained by four corresponding<br />
slots in the impeller. The neoprene seal stops any fluid<br />
which might pass between the graphite washer and impeller.<br />
A large drain hole at bottom side of pump body allows<br />
for drainage and acts as a vent to minimize moisture formation<br />
in the pump assembly.<br />
The pump shaft is mounted in a permanently lubricated<br />
double row ball bearing with grooves in the shaft to furnish<br />
race-ways for the bearing balls and provide a means of<br />
taking end thrust of the fan and pump<br />
4. Remove the bolt and nut from the generator adjusting<br />
bracket to cylinder block and remove bracket.<br />
5. Re move the four bolts and lock washers attaching fan<br />
blades to fan pulley and hub, and remove the fan blades.<br />
6. Remove bolts attaching water pump to block and remove<br />
the water pump.<br />
DISASSEMBLY:<br />
1. Remove the water pump shaft retainer (6), cover (2), and<br />
gasket (3), Figure 3.<br />
2. Place the water pump assembly in "Water Pump Holding<br />
Fixture J-2778, and using shaft driver contained in the set,<br />
press out the pump shaft and bearing assembly (18) with<br />
water pump pulley hub (19) attached.<br />
NOTE: The fixture is designed to support the water pump<br />
body on a level plane while removing the shaft from the<br />
impeller. The height of the support stud is controlled by<br />
adjusting nuts which are run up on the stud to level the<br />
water pump body. The large hole in the base plate provides