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14
Maintenance (cont'd)
Small manual adjustments may occasionally be necessary to accommodate changing loads and driving conditions.
Synchronization of the tow vehicle-to-trailer braking can only be accomplished by road testing. Locking up, excessive grab, or
delayed application is quite often due to the lack of synchronization between the tow vehicle and the trailer being towed. High
voltage (2V+), Low voltage (2V-) or improperly adjusted brakes are the most common causes of these problems and can easily be
corrected.
Prior to any adjustments, 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.
Brake Adjustment :
Prior to testing or adjusting brakes, be sure area is clear of any persons and vehicles. Failure to perform
test in a clear area may result in serious injury or death.
Lift the trailer by its frame and never the axle or suspension. Do not go under the trailer unless it is
properly supported by jack stands. Unsupported trailers can fall causing serious injury or death.
The LCI Electric Brakes are offered in a manual and automatic adjusting form. If manual brake adjusting is required, do as
follows:
1. Jack up trailer and secure on adequate capacity jack stands.
A. Follow trailer manufacturer’s recommendations for lifting and supporting the trailer.
B. Make sure the wheel and drum rotate freely.
2. Remove the adjusting hole cover from the adjusting slot on the bottom of the brake backing plate.
3. With a screwdriver or standard adjusting tool, rotate the starwheel of the adjuster assembly to expand the brake shoes.
A. Adjust the brake shoes out until the pressure of the linings against the drum makes the wheel very difficult to turn.
4. Rotate the starwheel in the opposite direction until the wheel turns freely with a slight lining drag, or approximately 10 click
adjustments.
Note:
A second screwdriver will be needed to push the auto adjusting lever away from the adjuster starwheel so that the
starwheel can be rotated backward in the case of a self-adjusting brake.
5. Replace the adjusting hole cover and lower the wheel to the ground.
6. Repeat the above procedure on all brakes.
Note:
For best results, the brakes should all be set at the same clearance. If the first brake's clearance was adjusted to 10 clicks,
then adjust the remaining brake clearances to the same amount.
1. Apply a light film of white grease or an anti-seize compound to:
A. Follow trailer manufacturer’s recommendations for lifting and supporting the trailer.
B. Make sure the wheel and drum rotate freely.
C. The areas of the backing plate that are in contact with the brake shoes and magnet lever arm,
D. And on the actuating block mounted to the actuating arm.
General Maintenance - Electric Brakes
Lubricate Brakes :
Prior to reassembling the brake drum assembly, do as follows:
