40
EATON
Heavy-Duty Series 2 Hydrostatic Pumps Parts and Repair E-PUPI-TS004-E October 2004
42. Install the pump end
cover, using the two
alignment tool dowels
to align the end cover.
It may be necessary to
rotate the charge
pump coupling slightly
to align the splines
before the end cover
will set squarely.
If the charge pump
coupling does not
have a thru-shaft, the
pump drive shaft may
have to be rotated
slightly to align the
splines.
43. Check alignment of
the charge pump
coupling and pump
shaft splines. Make
sure the the swash-
plate hold down arms
and springs are
aligned with the
recesses machined
into the face of the
end cover.
Remove the four dowel pins. Carefully remove the two
alignment tools using caution not to disturb the
housing gasket and sealing rings.
44. Install the end cover
retaining cap screws.
For
models 3322, 3922
and 4622
torque cap
screws
to 35–40 ft. lbs.
[54–47,4 Nm].
On
models 5422 and
6422
torque the cap
screws to 60–65 ft. lbs.
[81,3–88,1 Nm].
41. If you are using the
special hold-down
arm assembly align-
ment tool, install
them and the dowels
on the pump housing.
40. Install the dowel pin
in the end cover.
Lightly coat the end
cover side of the
valve plate with petro-
leum jelly to hold in
place. Install the valve
plate over the bearing
cup, aligning it with
the dowel pin.
39. Using a “T” handle to
rotate the charge
pump subassembly,
torque the retaining
cap screws to 20–24
ft. lbs. [27–32,5 Nm].
Note:
If the charge
pump assembly does
not have a thru-drive,
the charge pump
assembly must be
rotated from the other
side.
End Cover Installation
*Note: Special tools Required (see Page 5)
Assembly
38. Install the charge
pump cover over the
coupling and into the
pump end cover,
aligning the large
recess in the cover
subassembly with the
charge pump inlet.
Install the four
retaining cap screws.
