DRIVE CARE AND MAINTENANCE
CARE AND MAINTENANCE
Rockwell-Standard Company unit-type housing drive units are single- reduction drives of both spiral bevel and
hypoid design. The differential and gear assembly is mounted on tapered roller bearings with the cups
assembled in the case and cover halves of the housing. The straddle mounted pinion has two tapered roller
bearings located forward of the pinion teeth and a radial bearing at the inner end.
Where the spiral bevel gear set is used, the flange or yoke is assembled on a tapered pinion shaft and the
bearing pre load controlled by bearing adjusting and locknuts.
On hypoid geared units the pinion shaft is splined to accommodate the flange and the bearing pre load
controlled by hardened and ground spacers of the correct thickness between the bearings. Bearings are
retained in position by the companion flange nut. If desired, the spiral bevel type unit may be disassembled by
removing only the cover half of the housing from the vehicle.
Remove plug from bottom of axle housing and drain lubricant.
Disconnect universal at pinion shaft.
Remove spring clips.
Remove axle from under vehicle.
Remove the axle shaft stud nuts, lockwashers, and tapered dowels.