38
Install a magnetic base in-
dicator on the mounting
flange with the indicators
gage probe on the input
shaft. Next, using slip
joint pliers, grip the input
shaft as low as possible
and pry upward to deter-
mine shaft end play. The
indicator must read between .002 to .007 inch. To adjust shaft
end play, either add or delete the shims located under the bear-
ing cup located in the end cover. (see Figure 98)
With the input shaft end
play determined, remove
the magnetic base indica-
tor. Reposition the pump
assembly and remove the
end cover. Next lubricate
and install the pump hous-
ing sealing and back-up
rings. (see Figure 99)
On units incorporating the
pressure override option,
special tapered sealing
and back-up ring are used.
Correct installation is with
the sealing rings tapper
facing upward and with
the back-up rings tapper
facing downward. (see
Figure 100)
Next lubricate and install
the pump housing sealing
and back-up rings. (see
Figure 101)
Install the two dowel pins
in the cylinder barrel as-
sembly block face. Freely
lubricate the bearing plate
and aligning with the
dowel pins, install it on the
cylinder barrel assembly.
(see Figure 102)
Repair Information
– Series 2 Variable Displacement Pump
Again, use the two hold down
arm assembly alignment tool
and dowels on the pump hous-
ing. The next step is to install
the charge pump assembly into
the pump end cover before in-
stalling the end cover on the
pump housing. (see Figure 103)
The position of the charge pump
valve plate in the pump housing
determines charge pump input
rotation. Please not that one side
of the kidney slots in the valve
plate is wider that the other. (see
Figure 104)
For pumps with clockwise input
rotation, the wide side of the kid-
ney slot must be on the (A) side
of the pump end cover. Please
note the (A) and (B) Stamped on
the end cover, right next to the
high pressure ports. For coun-
terclockwise input rotation, the
wide side of the kidney slot must
be on the (B) side of the pump
end cover. (see Figure 105)
Like the valve plate, the eccen-
tric ring also determines charge
pump input rotation. Please note
that one side of the eccentric ring
is wider that the other. The wide
side of the eccentric ring also
has a identification “dot ”. (see
Figure 106)
For pumps with clockwise input
rotation, the identification “dots”
must be in alignment or the wide
side of the eccentric ring must
be on the (B) side of the pump
end cover. For counterclockwise
input rotation, the identification
“dots” must be misaligned or the
wide side of the eccentric ring
must be on the (A) side of the pump end cover. (see Figure 107)
Figure 100
Figure 102
Figure 101
Figure 99
Figure 98
Figure 103
Figure 104
Figure 105
Figure 106
Figure 107