TrailMax TD-42-T, Руководство пользователя

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page 24
TD-42-T
Brake Drum Inspection
Clean and inspect the brake drums whenever relining the brakes. To be suitable for
further service, the brake drum should pass the following checks:
1. The brake surface should be free of scoring, excessive heat checks and free of
cracks.
2. The brake surface diameter should be within the maximum diameter stamped on
the drum.
3. The mounting holes and pilot must be round and true.
4. The mounting surface must be clean and flat.
BRAKE SYSTEM SAFETY!
If any of the above conditions are not met, the brake drum should be
replaced. Failure to replace the brake drum will result in an unreliable
braking system, and may lead to an accident.
It may be desirable to machine the braking surface to remove small heat checks or
other surface defects resulting from normal use. The following should be noted when
turning the brake drum:
1. The maximum diameter cast into the back plate portion of the brake drum is the
discard diameter. If any portion of the brake drum exceeds the maximum diameter it
must be replaced.
2. When preparing to machine a drum, allow at least .040" under the maximum
diameter for further normal in-service wear. Failure to allow for service wear will result
in a weakened brake drum and may result in an accident.
Brake drums should be replaced in pairs to achieve the same braking power on
both wheels and maintain even braking load on the axle. Failure to replace both brake
drums on an axle will result in uneven braking load on the axle and may significantly
reduce the performance, service life and/or safety of your vehicle.
See the brake drum troubleshooting charts on the following pages for more informa-
tion.
WARNING
!
Maintenance