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Remove the old brake rotor
1. Jack up trailer and secure on adequate capacity jack stands. Follow
trailer manufacturers recommendations for lifting and supporting the
unit.
CAUTION
Do not lift or support the trailer on any part of the axle or suspension
system. Never go under any trailer unless it is properly supported on
jack stands which have been rated for the load. Improperly supported
vehicles can fall unexpectedly and cause serious injury or death.
2. Remove the wheel from the hub, leaving the brake exposed.
3. Disable the brake actuation system. Check that the hydraulic system has
zero pressure and that the hub/rotor rotates freely.
4. For brakes produced after April 2008, locate the crossover brake line
threaded into the bottom side of both calipers. The crossover brake line
is attached to the inboard side of the anchor yoke using a metal tube
clamp. Remove the
1/4-20 bolt that connects the tube clamp to the yoke.
5. Remove the four caliper mounting bolts. Do not allow the caliper
assembly to hang from the hose. Do not disconnect the hose or allow air
into the hydraulic system.
6. With the caliper assembly out of the way, remove the brake rotor by
removing the grease or oil cap, spindle nut and outer bearing, then pull
hub/rotor off the spindle.
Installing the new brake hub/rotor
1. First inspect the brake assembly for grooves, aking, cracks, heat
checking, thickness variation, insufcient rotor thickness, and look to
see that the mounting hardware is straight. Replace any component as
needed (or desired) per manufacturer recommendations.
2. Install the new brake hub/rotor assembly and outer bearing onto axle
spindle.
3. Install washer and spindle nut onto spindle to secure hub. Install nut
per the bearing adjustment procedure in your Operation Maintenance
Service Manual.
Braking Systems - Hydraulic
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