Cadillac 60 Series 1963 Shop Manual page 69

5-10
POWER STEERING
m
Fig. 5-13 Removing End Plate Retaining Ring
14. Remove pressure plate O-ring seal and
end plate O-ring seal from bore of housing and
discard.
15. Remove shaft seal from housing only if
defective, since it will be destroyed if it is re-
moved. Remove shaft seal if necessary by prying
out with screwdriver.
b. Cleaning and Inspection
Carefully clean all pump parts in cleaning sol-
vent. Do not immerse the drive shaft seal in
cleaning solvent as this could damage it. Replace
any damaged or worn parts.
1. Inspect flow control valve assembly for
score marks, wear, burrs, or other damage.
2. Inspect castings for cracks or other visual
evidences of damage. Check machined surfaces,
especially mating surfaces on O-ring seats, for
scratches or burrs that might permit leaks. Ex-
amine the V-shaped notches at edges of intake
and discharge ports on pressure plate. These
notches must be clean and undamaged if pump
noise is to be avoided, as they cushion the hy-
draulic shock when each vane passes the port.
3. Inspect cam ring end surfaces for score
marks.
NOTE: Cam ring is treated with "Lubrite"
which leaves a dull gray-black finish on wear
surface. Wavy grain appearance inside cam
ring is normal.
4. Inspect pump shaft for score marks, ex-
cessive wear, or damage - - particularly at
splines, key way, and at bearing and seal surfaces.
Separate and inspect rotor and vanes for wear
and general condition.
Seal
Pump Housing
Fig. 5-14 Installing Pump Shaft Seal
5. Inspect shaft bushing in pump housing, and
replace pump housing if bushing is scored or
excessively worn.
6. If any internal parts are found to be worn
or damaged, flush steering gear or disassemble
gear and clean internal parts.
c. Assembly
1. Lubricate new O-ring seals .and seal areas
with power steering fluid.
2. If drive shaft seal was previously removed,
lubricate new shaft seal with power steering fluid
and install in housing with metal backing up. Use
Seal Installer, J-21001, Fig. 5-14.
3. Install new pressure plate and end plate
O-ring seals in grooves in pump housing.
4. Install thrust plate on drive shaft with ported
face toward splined end of shaft.
5. Install rotor on shaft with counter bored end
toward thrust plate.
6. Clamp shaft in soft jawed vise and install
new retaining ring on splined end of shaft by pry-
ing ring open and sliding it down over shaft until
it seats itself in ring groove. Be careful not to
damage shaft.
7. Insert drive shaft with thrust plate and rotor
into housing, using Seal Protector, J-21000, Fig.
5-15. Make sure that shaft is properly seated.
8. Place pump housing in vise, hub down, using
flat on hub for one clamping surface.