37-1-614 Page 50
FIGURE 7-25 – SLIDE SHIMS OVER SHAFT ASSEMBLY
Tighten the nuts on the jack screws evenly to prevent cocking of the race.
On the
gate rotor
, a ball bearing (32) is used. Coat the shaft and bearing bore with oil. Slide the
bearing over the shaft. Assemble the press plate and press the bearing solidly against the
bearing spacer.
27. Install the bearing clamp plate (10) with “Nylok” type screws (45), (FIGURE 7-27).
Check the fit of the key (40, 41) in the gear hub (9) and pinion (7). Check the pinion, hub and
shaft extensions for burrs. Install the keys in the shafts, making sure of a snug fit. Heat the
pinion and hub in oil or dry heat, such as an oven (NEVER USE TORCH) to 350° F, for thirty
minutes minimum to allow for complete heat penetration. If heating with oil in a confined area use
of cooking oils will prevent undesirable odors.
Lock the rotors from turning with a piece of hard wood or belting. Install the hub (9) and pinion (7)
and pull tight with a locking device, (FIGURE 7-27). Use the hub retainer (13) and screws (60) to
pull the hub up tight against the bearing.
As the hub and pinion cool, check for tightness. The bearing and bearing spacer must be
clamped tight against the rotor. Bend the ear of the lockwasher (35) into the slot of the nut (33)
holding the pinion. Oil the bearings generously.
FIGURE 7- 26 – PRESS PLATE & JACK SCREW
ASSEMBLY
FIGURE 7-27 – INTALL HUB & PINION PULL
TIGHT
