INSTALLING THE COMPANION FLANGE (Fig. 19) OR END YOKE (Fig.20 ) ON THE TAPERED SHAFT OF
"SUNDSTRAND" HYDROSTATIC PUMP.
The companion flange or end yoke Is assembled onto the tapered pump shaft with a woodruff key, slotted nut and cotter
pin.
A minimum torque must be applied to the slotted nut to prevent movement of either the companion flange or end yoke
on the pump shaft.
Clean pump shaft and companion flange or end yoke with a solvent. Remove any burrs from key or keyways that may be
present.
Assemble companion flange or end yoke on pump shaft making certain key is lined up with keyway. Use a short brass
rod or lead mallet to lightly tap the flange or yoke end on pump shaft so the tapered mating surfaces are in contact before
applying torque to the slotted nut.
Thread on slotted nut. Torque nut to the following ft lbs minimum, then insert cotter pin. Do not back off on slotted nut to
attempt to insert cotter
"22" and "23" series pump. Dry threads - 230 ft. Lbs
Oiled threads - 185 ft lbs
Apply a coating of oil or grease to the splines of the yoke shaft. Grease fittings on journals.
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