MAC 6000, Руководство пользователя

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MAC 6000 Hydronic Heater
Trailer Axle Manual
2106 East Indiana Ave., Bismarck, ND 58504 U.S.A. • www.macheaters.com • +1-800-272-4604
5
Rev: 07.25.2013
BRAKE DRUM INSPECTION
The brake shoes contact the drum surface and the magnet contacts the armature.
These surfaces are subject to wear and should be inspected periodically.
The drum surface should be re-machined if wear is more than .030” or out of round by
more than .015”. The drum should be replaced if scoring or wear is greater than .090”.
The inner surface of the brake drum that contacts the brake magnet is the armature
surface. If the armature surface is scored or worn unevenly, it should not be machined
more than .030”. The magnets should be replaced whenever the armature surface is
refaced and vice versa.
NOTE: Make certain that the wheel bearing cavities are clean and free of
contamination before reinstalling bearing and seals. Resurfacing procedures can
produce metal chips and dust that can contaminate the wheel bearings and cause
failure.
Drum Maximum Rebore Diameter
12.25" 12.340"
BEARING INSPECTION
Wash all grease and oil from the bearing cone using a suitable solvent. Dry the bearing
with a clean, lint-free cloth and inspect each roller completely. If any pitting, spalling,
or corrosion is present, then the bearing must be replaced. The bearing cup inside the
hub must be inspected.
NOTE: Bearings must always be replaced in sets of one cone and one cup.
Always wear eye protection when servicing the axle, brakes, hubs, springs and
wheels. Failure to wear eye protection may result in serious injury.
Follow the procedure below to replace the bearing cup:
1. Place hub on a flat surface with bearing cup on the bottom.
2. With brass drift punch, lightly tap around the small end of the cup to push it out.
3. Clean the hub bore. Replace the cup by tapping it back in with the brass drift
punch. Cup should be seated against the retaining shoulder in the hub.
Consult Bearing Replacement Chart for proper replacement bearings.
NOTE: Replacing the bearing cup is a very precise process. The cup must be perfectly
seated when replaced. If the cup is not seated correctly, damage to the assembly may
not be covered by the warranty. Consult Lippert Components, Inc. prior to replacing
bearing and bearing cup. The trailer should be taken to a certified service center for
this work to be done.
Do not mix Lithium, calcium, sodium or barium complex greases. Chemical
compatibility problems may occur. If you are changing from one chemical grease
to another, be sure all old grease is removed prior to applying new grease.
BEARING LUBRICATION - OIL
If your axles are equipped with oil lubricated hubs, then your lubrication procedure is
to periodically fill the hub with a high quality hypoid gear oil to the level indicated on
the clear plastic oil cap. The oil can be filled through the rubber plug hole in the cap.
Bearing Inspection and Lubrication-Oil