GMC 1976 ZEO 6083 Maintenance Manual page 548

9- 1 6 STEERING
Figure 10-Removal of Stud & Union Seals
from back of reservoir. Discard all seals and "O"
rings. (figure 9) .
3 . Reservoir may then be removed from housing
by rocking it slightly back and forth to unseat the
"O" ring. Remove "O" ring and discard.
4. Remove both mounting stud and union seals
from counterbored spaces between reservoir and
housing. Discard these seals also . (figure 10).
5. Remove the end plate retaining ring by insert-
ing a small punch in the 1/8 inch diameter hole in
the housing side opposite the flow control valve hole .
Compress the retaining ring with the punch and
Figure 1 1-Removal of End Plate Retaining Ring
Figure 12-Removal of End Plate
remove by inserting a screwdriver under the ring and
twisting the screwdriver. (figure 12).
6. Remove end plate and end plate "O" ring . End
plate is spring loaded and will generally sit above the
housing level for ease of removal . If sticking should
occur, a slight rocking action of the end plate should
be used to free it . (figure 12).
7. Remove pump from vise and invert . Flow con-
trol valve and valve spring will fall free . (figure 13).
8 . Remove key from shaft end where pulley was
mounted.
9. With end cover "O" ring and shaft key
removed, tap very lightly on end of shaft, only until
pressure plate falls free . (figure 14) .
10 . Remove pressure plate, shaft, pump ring,
vanes and rotor. (figure 15).
11 . Remove shaft retaining ring and discard.
(Some models do not have retaining rings) .
12 . Remove rotor and thrust plate from shaft and
both dowel pins from housing. (figure 16).
13 . Pry shaft seal out of housing, being careful