Maintenance
Replacing bearings—free end
Removal
1. Loosen the set screw that holds the collar of the bearing to the shaft.
2. Unbolt the (4) bolts that hold the bearing in place.
3. Clean dirt and rust from surface. Smooth off raised areas.
4. Slide the bearing off the shaft. Because of rust or nicks on the shaft, a pull-
er may be needed.
Installation
1. Clean the shaft and bearing bore.
2. Apply anti-seeze.
3. Slide bearing in place.
4. Install (4 ) bolts and torque to 100 ft/lbs.
5. Tighten collar set screws.
Installing the Compact Drive Nut
Do not use anti-size on the nut or drive stub.
Caution: Do not tighten set screws before installing nut.
1. Thoroughly clean and degrease the threads on both the nut and the drive stub.
2. Apply Blue Loctite to set screw and stub threads.
3. Screw the nut onto the drive stub and tighten to about 40 FT/LBS
4. Turn the shaft 2-3 full rotations.
5. Loosen nut slightly and torque to 40 FT/LBS
6. Tap the nut with a small ball peen hammer.
7. Torque again to 20 FT/LBS.
8. Torque set screws to 160 IN/LBS.
Assembly of the OHLA housing
insert 1/2-13 x 4” bolts into the OHLA weld-
ment
1. attach 4 bolt piloted bearing with 1/2-13
x 2” bolts
2. Slide 2 1/4” QD bushing into pulley and
hang pulley in place
3. slide OHLA SAE C splined stub through
the pulley and into the 4 bolt piloted
bearing. Tighten set screw using 242 blue
locktite.
4. Center the pulley and QD bushing and
tighten down QD bushing.
5. Slide OHLA bearing housing onto the 1/2-
13 x 4” bolts and tighten set screws.
6. Bolt motor onto OHLA Housing with 1/2-
13 toplocks.
