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Magnets
Your electric brakes are equipped with high quality electromagnets that are designed to provide the proper input
force and friction characteristics. Your magnets should be inspected and replaced if worn unevenly or abnormally.
Even if wear is normal as indicated by your straightedge, the magnets should be replaced if any part of the
magnet coil has become visible through the friction material facing of the magnet. It is also recommended that
the drum armature surface be refaced when replacing magnets.
Magnets should also be replaced in pairs - both sides of the axle. Always use genuine MDC OEM parts.
Shoes and Linings
A simple visual inspection of your brake linings will tell if they are useable.
Replacement is necessary if the lining is worn (to within 1/16” or less), contaminated with grease or oil or
abnormally scored or gouged. It is important to replace both shoes on each brake and both brakes of the same
axle. This is necessary to retain the “balance” of your brakes. Be sure to replace your shoes only with genuine
MDC parts available from our outlets.
Important Safety Notice
Proven and in some cases approved service methods and correct repair procedures are essential for the safe,
reliable operation of the brakes, suspension, and axles as well as the personal safety of the individual doing the
work. This manual intends to provide general directions for performing service and repair work with tested,
effective techniques. By following these guidelines, it will help assure reliability. The numerous variations in
procedures, techniques, tools, and parts for servicing axles, as well as in the skill of the individual doing the work
will determine outcomes. This manual cannot possibly anticipate all such variations nor provide advice or cautions
as to each. Accordingly, anyone who departs from the instructions provided in this manual must first establish
that they neither compromise their personal safety nor the vehicle integrity by their choice of methods, tools, or
parts.
*If at all in doubt please refer all repairs and maintenance to a suitably qualified or experienced mechanical
repairer.
*MDC Campers and Caravans Inc accepts no liability for personal injury, loss or damage resulting from incorrect
applications, methods, and failure to perform maintenance safely and correctly.
Bearings and Seals
The Timken bearings in your trailer are protected with a rubber seal on the rear of the drum and a friction fit
bearing cap on the front. Under normal use without encountering water crossings these should be services every
3000 miles.
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