Perkins Phaser Series - Page 270

COOLING SYSTEM 21
Coolant pump - gear driven
To dismantle and to assemble21A-03A
The coolant pump fitted to the latest engines has a
larger bearing assembly which has an integral oil
seal. Identification of the new coolant pump is by
the last four digits of the part numbers, (4131E008)
(4131E011), (4131E014) or (4131E113), stamped
on the front of the coolant pump body and by the
bearing which extends approximately 5 mm (0.2 in)
past the end of the pump body. The gear for
coolant pumps part number (4131E014) and
(4131E113) has a recess machined into the hub.
To dismantle and assemble the pumps fitted to the
latest engines, refer to 21A.12.
To dismantle - early engines
Special tool:
Gear puller, MS.99
Consumable products:
POWERPART Retainer (high strength)
1 Remove the three long studs and the "O" ring
(A1) from the pump body (A5).
2 Remove the front cover (A9) and the joint (A10).
3 Remove the gear (A3) with the puller.
4 Use a suitable lever to remove the oil seal (A4)
and discard the seal.
5 If necessary, remove the studs from the pump
body. With a suitable support under the impeller
end of the body, use a suitable adaptor to press out
the shaft and bearing assembly (A8), together with
the impeller (A7) and the coolant seal (A6).
6 With a suitable support under the impeller, press
the shaft out of the impeller. Discard the impeller,
the shaft, the bearing and the coolant seal.
Caution: When a coolant pump repair kit is used,
It is important that all of the components in the
pump kit are changed. Coolant pump kits include
the latest components which may be of a different
design to the original components fitted to the
engine.
To assemble - early engines
1 Clean thoroughly the inside of the pump body
especially the bearing bore and the counterbore for
the coolant seal. Both of these bores and their
chamfers must be clean and free of corrosion.
a a a a a a
a a a a a a
aa
a a a a a a
a a a a a a
aa
a a a a
a
a a
a
a
a a
a
a
a a
a
a a a a
11
a a a
a
a
a
a
a
a
a
a
a
a a a
1
a a
a a
a a
a a
3
a a a
a
a
a
a
a
a
a a a
4
a a a
a
a
a
a
a
a
a a a
6
a a
a a
a a
a a
7
a a
a a
a a
a a
a a
8
a a
a a
a a
a a
9
a a a a
a
a a
a
a
a a
a
a a a a
10
a a a
a
a
a
a
a
a
a a a
5
a a a
a
a
a
a
a
a
a a a
2
PA269
2 Apply a thin layer of POWERPART Retainer
(high strength) to the outer surface of the bearing,
but keep the retainer away from the ends of the
bearing. Provide a suitable support under the gear
end of the pump body. Put the bearing and shaft
assembly (A8) in position with the bearing square to
the pump body and the shortest end of the shaft in
the pump body. Use a press and a suitable adaptor,
which will apply the force to the bearing and not to
the shaft, to press in the bearing and shaft
assembly. Press in the bearing until the end of the
bearing is level with the bottom of the counterbore
for the coolant seal. Remove the adaptor and
remove all retainer from the end of the bearing.
Caution: Do not lubricate the coolant seal (A6). It
is important that it is not contaminated with oil or
grease and, if it is held in the hand, it should be
held by the edge of the outside flange.
Perkins Phaser/1000 Series, April 1995 21A.09