1956 AMC Hudson Technical Service Manual Supplement

HYDRA-MATIC TRANSMISSION 85
Install torus feed valve into large bore on side of pump
opposite priming springs with long land entering first (Fig.
102).
FIGURE 104—Installing Vanes in Rotor
FIGURE 102—Installing Torus Feed Valve
Assembly
After torus feed valve assembly is installed, make sure
that free movement of the valve can be obtained by moving
the slide.
Install oil cooler ball into oil cooler passage which is
nearest to dowel. Then install the spring and spring retainer
pin (Fig. 103).
Check with feeler gauge between each vane and inside
diameter of slide to make certain that clearance does not
exceed .003".
NOTE: With vanes contacting slide on one side,
clearance should not exceed .003" on opposite
side. If clearance is excessive, pump must be
replaced.
Install front cover to pump body with four attaching
screws using short screw in hole nearest top of pump,
opposite intake pipe hole.
Turn pump over and make sure oil rings are in place on
overrun clutch piston and hub in front pump body. Put
location marks on front body and overrun clutch piston
opposite dowel so piston can be aligned with dowels.
Align piston with dowels and install overrun clutch
piston into front pump cavity compressing piston ring with
fingers (Fig. 105).
FIGURE 103—Installing Cooler Check Valve
Assembly
Install bottom vane ring into front pump cavity locating
it in the center of the slide. Then install the rotor with drive
slots up. Install the seven vanes with proper side against
vane rings. The vanes will have polished areas where they
contact the vane rings. Install top vane ring on rotor and
check to see that rotor rotates freely (Fig. 104).
The total clearance between vanes and slide, with the
vane rings installed, should be .000"-.003".
FIGURE 105—Installing Overrun Clutch Piston
in Front Pump