Lippert Components Trailer Axle (Standard) User Manual
Page 11
Rev: 03.18.2014
Page 11
Trailer Axle Owners Manual FULL
Shoes and Linings
Linings should be replaced if the material is worn to 1/16” or less. Shoes should also be replaced if they
become contaminated with grease or oil or have become scored, pitted or gouged. Heat cracks are normal
and rarely require attention. When replacing shoes, both shoes on the same brake and the brakes on the
same axle should all be replaced at the same time, once again ensuring even braking capacity.
After replacing shoes and linings, your trailer brakes should be burnished-in by applying the brakes 20-30
times with a 20 m.p.h. decrease in speed, e.g. 40 m.p.h. to 20 m.p.h. Allow ample time for brakes to cool
between application. This allows the brake shoes and magnets to begin seating to the brake drum.
Axle and Suspension Installation
The single most important portion of axle installation is parallel alignment of the trailer axle(s) to the tow
vehicle or drive axle(s). Parallel installation allows for correct and safe control, prolonged tread life and will
all but eliminate dog-tracking. Proper alignment is most readily achieved by measuring from the center of
the trailer king pin to the center of each end of the axles.
Lippert Components, Inc. tubular axles are made of high strength steel to prevent metal fatigue and provide
the best possible welding conditions. The round tubular axles allow for even and uniform structure.
Always wear eye protection when servicing the axle, brakes, hubs, springs and wheels. Failure to wear eye
protection may result in serious injury.
Suspension Systems
The suspension systems incorporated into Lippert Component, Inc. axles are designed to provide the
following benefits:
1. Attach the axle to the trailer.
2. Dampen the effects of road shock.
3. Provide stability to the trailer.
All Lippert suspension systems are available in single and multiple axle configurations. For specific or
custom applications, please contact Lippert Components, Inc. Axle Division.
Fig. 6