Perkins Phaser Series - Page 271

21 COOLING SYSTEM
3 With the widest end of the coolant seal towards
the bearing, push the seal onto the shaft until it is
against the chamfer of the counterbore. Ensure that
the seal is square with the bore and press the seal
into the counterbore, with a suitable adaptor, until
the outer flange is in contact with the pump body.
The adaptor must apply force only to the outer
flange of the seal. With the seal in position,
continue to apply force for approximately ten
seconds to ensure that the seal remains in position.
A new coolant seal is fitted to the latest coolant
pumps. The seal has a brass body and is
interchangeable with the earlier seal. A small
number of coolant pumps (part number 4131E103),
used on early six cylinder engines, have a coolant
seal (part number 2418M003) with a diameter of
38 mm (1.5 in). These seals are not
interchangeable with other coolant seals.
It is important that the new seal is not contaminated
by oil or grease and if it is held in the hand, it
should be held by the edge of the flange. Do not
damage the ring of green sealant applied to the
body of the coolant seal just behind the flange.
A tool (A) can be made to press the new seal into
position. The tool should be made of a suitable
material to the dimensions shown below:
A 44,0 mm (1.73 in)
B 40,0 mm (1.57 in)
C 11,6 mm (0.46 in)
D 35,8 mm (1.41 in)
E 16,1 mm (0.63 in)
F 1,00 mm (0.04 in) at 45°
G 2,00 mm (0.08 in) at 45°
The dimensions of the tool to fit the coolant seal,
will ensure that the seal is the correct length after it
is installed. It will also prevent axial distortion of the
seal when it is pressed onto the shaft.
The tool cannot be used for the 38 mm (1.5 in)
seal. Ensure that the hole in the tool is aligned with
the shaft as the seal is fitted. With the ring of
sealant towards the bearing, use the tool to press
the seal onto the shaft until the bottom of the seal
flange is in complete contact with the pump body.
a a a
a
a
a
a a a
D
a a a
a
a
a
a a a
A
a a a
a
a
a
a
a
a
a a a
B
a a a
a
a
a
a
a
a
a a a
C
a a
a a
a a
F
a a a
a
a
a
a
a
a
a a a
G
a a a
a
a
a
a a a
E
PA188
21A.10 Perkins Phaser/1000 Series, April 1995