Axles; Rear Axles Other Than Mack; Mack Rear Axles - Mack Granite GU Series Operator's Handbook Manual

234 OPERATION

AXLES

Rear Axles Other Than MACK

Please refer to the operator's manual provided with your vehicle for axles
other than MACK.

MACK Rear Axles

Mack Trucks, Inc. provides axle housings in three capacity classifications:
• Medium Duty
• Heavy Duty
• Extra-Heavy Duty
To deliver the appropriate amount of torque to the driving wheels, MACK
offers dual-reduction carriers in a variety of ratios.
Mack Trucks, Inc. offers a large variety of four-wheel-drive tandem axles with
top-mounted, dual-reduction carriers (for straight line through drive). Carriers
are also available in a large number of ratios.
All four-wheel-drive tandem carriers are available with the MACK inter-axle
power divider third differential (with or without a power divider lockout).
MACK rear axles are designed so the entire load is carried by the axle housing
(through the wheel bearings mounted on the housing spindle). The rear axle
shafts are either free-splined (both ends) or integral flange type. Both types of
axle shafts can be removed without removing or disturbing the rear wheels.
To avoid excessive tire wear, proper maintenance must be practiced and rear
axle tires must be matched.
CAUTION
The maximum safe operating oil temperature for a MACK rear axle is 121°C
(250°F) for mineral-based oil, and 148°C (300°F) for synthetic-based oil.
Continued operation with oil above this temperature will result in rapid
deterioration of the oil's lubricating properties and is NOT recommended.