Cadillac 60 Series 1963 Shop Manual page 121

6-28 HYDRA-MATIC TRANSMISSION
Pump Slide
Priming Springs—Inner and Outer
Pump Body
Fig. 6-45 Installing Pump Slide
4. Remove check valve retaining pin, spring
and ball, Fig. 6-44.
5. Remove oil pump rotor along with top vane
ring.
6. Remove vanes and lower vane ring.
7. Remove slide by pushing slide toward prim-
ing springs; then lift out of body at opposite end.
Note position. Remove inner and outer priming
springs.
8. Turn pump body over, remove spiral type
snap ring that retains front sprag to pump body,
and remove sprag assembly, Fig. 6-44. If outer
sprag race is damaged entire oil pump assembly
must be replaced.
9. Remove clutch piston from pump body. If
piston sticks, use plastic hammer and tap around
outer rear edge of pump body.
Drive
"* Retaining Pin
^ .
Torus Feed Valve
Torus Feed Valve Spring
Torus Feed Valve Spring Retainer
Fig. 6-46 Installing Torus Feed Valve
10. Remove and discard neoprene seals from
pump body hub and piston.
11. Remove interlocking oil seal ring from
pump cover.
Inspection
1. Inspect all passages for dirt or restriction,
using tag wire.
2. Slide should move freely in pump body.
Make certain there is not a binding condition.
Also inspect slide for excessive wear and scoring.
3. Pump vanes will have a tendency to show a
polished surface on side bearing against pump
slide. If not excessive, this is a normal condition.
Check freeness of vanes in rotor slots.
4. Check bushing in pump rotor for scores or
flaking. Slight surface wear is a normal condi-
tion if not in excess. See Note 20 for bushing
replacement procedure.
5. Check bushing in pump housing for excessive
wear or looseness. See Note 20 for replacement
procedure.
6. Check torus feed valve for free movement
in bore.
7. Examine pump body and pump cover slide
surface contacts for smoothness.
8. Clean all pump parts thoroughly with solvent
and dry completely before assembly is attempted.
Care should be exercised in handling all pump
parts. They must not be knocked together or
dropped.
Assembly
1. Insert inner and outer priming springs in
pump body.
2. Position pump slide into pump body toward
priming springs. Compress priming springs with
slide and drop slide into cavity of pump, Fig.
6-45.
3. Insert bottom vane ring and center it in the
slide bore.
4. Install rotor with drive slots up, Fig. 6-46.
5. Install 7 vanes in rotor slots. Make certain
vanes fit between bottom vane ring a#d slide.
NOTE: Check edges of vanes for wear pat-
tern. One eage will be polished full length.
This edge should face the slide.
6. Install top vane ring on rotor, centering it
between vanes, Fig. 6-46.