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COOLING SYSTEM
7-5
PUMP BODY WITH
SHAFT AND BEARING
IMPELLER
NY242 B
Fig. 4-1
70-225 Cubic Inch Engine Water Pump
(8)
Use a wire brush to remove all rust from the
separator plate. Clean all parts with a suitable solvent
and dry with compressed air.
Bearing assemblies re-
moved from water pumps should not be reused,
as damage to the bearing will usually result during
removal.
Fig. 5-Removing
Seal Retainer
Assembly
f 170,225
Cubic inch Engines)
NOTE: Inspect seal surface of the impeller hub to
be sure it i s free of nicks, burrs, scratches and
rust. If necessary remove these blemishes using
crocus cloth on a flat plate.
(1)
Apply a thin coat of Mopar Perfect Seal Sealing
Compound, Part Number 1057794 to the seal pocket
in the pump body.
(2) With the pump housing supported at the hub
end, use a 1% inch (12 point) socket to apply pres-
sure against the outer lip of the seal retainer and press
the seal assembly into the body until the retainer lip
is against the pump body.
(3)
With the slinger ring in position on the long
end of the pump shaft (approximately
9 6
inch from
the bearing assembly) start the shaft and bearing
assembly into the fan end of the pump body bore.
(4) Use a 1% inch (12 point) socket and support
the pump body at the seal end, and with Tool C-3468,
positioned against the outer bearing race only, press
the shaft and bearing into the pump body so the end
of the bearing is flush with the body hub end.
(5) While supporting the pump, on the impeller end
of the shaft, press the fan hub onto the shaft (flat sur-
face out) so the shaft extends
l3IQ2
inch beyond the fan
hub.
(6) Position new gaskets on each side of the sep-
arator plate and install the plate on the pump body.
(7) Clean the seal face and impeller hub seal sur-
face.
(8)
Support the pump on the fan hub end of the
shaft and position the new impeller on the pump shaft
(blade portion down). Using a tool that will press
against the impeller insert only, press the impeller
onto the shaft until it is flush with the end of the
shaft.
HOUSING
GASKET
HUB
\
/
63x405 A
- D
Fig. 6 2 7 3 - 3 1 8 Cubic Inch Engine Water Pump
Disassembly
f273,3 I8
Cubic Inch Engines)
Wig. 61.
(1)
Break the plastic impeller and remove it from
the metal insert.
(2) Split the sintered metal insert of the plastic
impeller with a chisel and hammer.
(3) Remove the rubber portion of the shaft seal
and the spring.
(4) Using puller Tool C-3753 remove the retainer
portion of the seal.
( 5 )
Remove the fan hub using puller Tool C-412
(Fig.
8).
(6)
Support the pump body on the front face (fan
hub end) and apply pressure to the rear end of the
shaft to press the shaft and bearing assembly out
through the front of the pump.
If
an attempt is made
to remove the shaft in the opposite direction, dam-
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