SERVICE MANUAL
IMPORTANT
The front and rear end plates are
different and must be assembled in their
proper locations for the pump to function
correctly. As shown in Figure 26, the
front end plate for clockwise rotation
pumps contains the oil grooves. For
counter clockwise pumps, the end plate
without the oil grooves is the front end
plate. A correct assembly will align the
end plate O.D. large open slots with the
large shallow pump housing pocket
ports. The end plate gasket side will be
away from the pumping elements.
Fig. 26 End Plate Identification
1
Oil Grooves
2
Grooved End Plate
3
No Groove End Plate
IMPORTANT
Two different types of end plates and
gaskets are used in this pump assembly.
They may be identified by the shape of the
gasket grooves in the end plate surface.
As illustrated in Figure 27, one type of end
plate uses a circular gasket which must be
formed into the end plate grooves. The
other type uses a pre-formed gasket
moulded in the shape of the end plate
grooves. Determine which type of end plate
is used in the pump being serviced. The
different
types
of
gaskets
are
not
interchangeable.
Fig. 27 End Plato and Gasket Identification
1
Circular Gasket
2
Pre-formed Gasket
3
Different on Each Side
4
Same on Both Sides
2.
Install locating pin in pump housing, Figure 28.
If housing is drilled to accept two pins, install pin
in
original
location
as
marked
during
disassembly.
Fig. 28 Locating Pin in Housing
1 Locating Pin
CTS-4027- Page 17
PRINTED IN UNITED STATES OF AMERICA
