19
Model 70360
17 The thrust plate is reversible.
Either side will fit into the camplate.
In most cases if any irregularities
are noted it is best to replace the
thrust plate. (See Figure 49)
18 Lubricate and install the
thrustplate over the input shaft
assembly and into the camplate.
The thrustplate must rest firmly in
its pocket located in the camplate.
19 Reassemble the rotating kit
assembly by first aligning the
splines in the pivot with the splines
in the block. Install the pivot on the
block assembly pins. (See Figure 50)
20 Use a small socket or similar
tool to help retain the pivot in the
centered position. Lubricate and
install the spider and piston
assemblies onto the pivot and
pistons into the piston block
assembly. (See Figure 51)
21 Hold the housing assembly in
the vertical position then carefully
install the rotating kit by first
aligning with the splines on the
input shaft. With splines aligned,
install the rotating kit into the pump
housing. (See Figure 52) Use
caution to ensure all parts are kept
in their proper position.
22 With the rotating kit installed,
reposition the housing assembly in
the input shaft down position and
install a new housing gasket. (See
Figure 53)
23 Lightly coat the backplate side
of the valve plate with petroleum
jelly for retention during assembly.
Install the valve plate over the
needle bearing, aligning the small
slot on the outside of the valve
plate with the dowel pin in the
backplate. (See Figure 54)
24 Carefully install the backplate
assembly by aligning it with the
dowel pins located in the pump
housing. Use caution not to
dislodge the valve plate. (See Figure 55)
25 Lightly coat the charge pump
assemblies drive key with petroleum
jelly and install it in the drive shaft
assembly. (See Figure 56)
26 Align the keyway of the
gerotor’s inner ring, then lubricate
and install the inner ring and outer
ring over the input shaft and onto
the backplate assembly. (See Figure
57)
Note: Before installing the charge
pum adaptor plate, offset the outer
ring of the geroter as shown.
27 With the gerotor assembly
installed, install new o-ring into
charge pump adapter plate and
place adapter onto backplate over
gerotor. Retain with cap screws.
Torque cap screws to 52,9 to 56 Nm
[39 to 42 ft. lbs.]. (See Figure 58)
28 Install the two high pressure
relief valves. Torque valves 128,8 to
142,4 Nm [95 to105 ft. lbs.]. (See
Figure 59)
29 Lubricate and reassemble the
bypass valve assembly. Install the
bypass valve into the backplate.
Torque valve to 36,6 to 40,6 Nm [27
to 30 ft. lbs.]. (See Figure 60)
30 Coat the charge pressure
poppet with petroleum jelly and
place poppet onto spring and install
into the adapter plate. (See Figure
61)
31 Install the hollow charge
pressure relief valve retainer into
the adapter plate. Torque retainer
to 6,8 to 9,5 Nm [5 to 7 ft. lbs.].
32 Lubricate and install the o-ring
on the cover plate or gear pump.
Install the cover plate or gear pump
and two cap screws. Torque cap screws to 36,6 to 40 Nm [27
to 31 ft. lbs.].
The Model 70360 or 78362 variable displacement pump is now
ready for test and reinstallation.
Figure 49
Figure 50
Figure 51
Figure 52
Figure 53
Figure 54
Figure 55
Figure 56
Figure 57
Figure 58
Figure 59
Figure 60
Figure 61
Repair Information