Airstream Classic Trailer 25' 2005, Owner'S Manual

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AIRSTREAM CLASSIC TRAILER
D-14
ION
ce
he drum surface should be inspected for excessive wear or heavy scoring. If worn more than .020"
10" Brake Drum- 10.090"
um- 12.090”
finish by
oper contact between the armature face and the
d and the armature
TO PROTECT THE WHEEL BEARING BORES FROM METALLIC
MINATION WHICH RESULT FROM DRUM TURNING OR ARMATURE RE-
RING
AILURE.
BRAKE DRUM INSPECT
There are two areas of the brake drum that are subject to wear and require periodic inspection. These two
areas are the drum surface where the brake shoes make contact during stopping and the armature surfa
here the magnet contacts. w
T
oversized, or the drum has worn out of round by more than .015”, then the drum surface should be turned.
If scoring or other wear is greater than .090", the drum must be replaced. When turning the drum surface
the maximum re-bore diameter is as follows:
12" Brake Dr
The machined inner surface of the brake drum that contacts the brake magnet is called the armature surface.
the armature surface is scored or worn unevenly it should be refaced to a 120 micro-inch If
removing not more than .030" of material. To insure pr
magnet face, the magnets should be replaced whenever the armature surface is reface
surface should be refaced whenever the magnets are replaced.
NOTE: IT IS IMPORTANT
HIPS AND CONTA C
FACING OPERATIONS. MAKE CERTAIN THAT THE WHEEL BEARING CAVITIES ARE CLEAN
AND FREE OF CONTAMINATION BEFORE REINSTALLING BEARINGS AND SEALS. THE
PRESENCE OF THESE CONTAMINANTS WILL CAUSE PREMATURE WHEEL BEA
F