WIM-HB-000_A
Page
16
of
21
7.2.8
Grease seal lips and bore of brake housing, then slide bearing adapter assembly into
bore making sure thread zerk hole at outer edge of bearing adapter is at brake top
and unthreaded hole at outer edge is on bottom. During positioning of adapter
assembly in bore, care must be taken seal lips slide over seal sleeve without turning
backward and that O-ring does not drop from position. Secure bearing adapter by
cap screws and washers.
7.2.9
Bearing outer race is a slip fit, however inner race is a press fit and can be heated
before installation. Drive bearing on shaft until outer race is seated against bearing
adapter. Cover both inner and outer races with a protective plate to distribute
impacts, otherwise breakage of races may result. Bearing is positioned properly once
inner race contacts shoulder on shaft.
7.2.10
Coat bore of cover plate with Permatex #1 form-a-gasket. Start seal in bore, cover
with a protective plate, and then drive seal by striking plate. Seal lip must point
inward. Place cover plate over shaft and seat on top of bearing. Do not secure.
7.2.11
Continue by following either set of steps; 7.2.12 through 7.2.16 or 7.2.17 through
7.2.24, as described in the previous 7.2 NOTE of this section.
7.2.12
Raise the rotor-shaft assembly inside the housing until the rotor face contacts the
above stator face and travel stops.
7.2.13
Using feeler gages, measure the gap between the bearing adapter and cover plate.
7.2.14
To this measured value add .005” to .007” for bearing end play then combine plastic
shims and place the total between the bearing adapter and cover plate.
7.2.15
Rotate cover plate so bearing grease zerk at edge of cover plate is aligned with 2”
NPT outlet at top of brake. Fasten cover plate with socket head cap screws.
7.2.16
Assembly of this bearing area is now finished. If opposite side requires repair, see
7.1 for disassembly then follow assembly procedure of this section, steps 7.2.1
through 7.2.16.
7.2.17
Rotor-stator spacing must be measured to correctly center rotor. Mount dial
indicator fixture to brake housing, position indicator spindle on the end of shaft and
zero dial.
7.2.18
Raise the rotor-shaft assembly inside the housing until the rotor face contacts the
above stator face and travel stops. Record indicator reading. Release pull on shaft
and rest brake again on stands.
7.2.19
Temporarily bolt cover plate to bearing adapter, insert eyebolt, and position dial
indicator again.
7.2.20
Raise rotor-shaft assembly until bearing contacts cover plate and travel stops.
Record indicator reading.
7.2.21
Divide the first reading by two, subtract the second reading, the result is the shim
thickness. Release pull on shaft and rest brake again on stands.
7.2.22
Combine plastic shims from set and place an amount equal to the value calculated
between the bearing adapter and cover plate.
7.2.23
Rotate cover plate so bearing grease zerk at edge of cover plate is aligned with 2”
NPT outlet at top of brake. Fasten cover plate with alien-head cap screws.
7.2.24
Assembly of this bearing area is now finished. If opposite side requires assembly,
turn brake over, but follow assembly procedure of this section, steps 7.2.12 through
7.2.16 and steps 7.2.17 through 7.2.24 should be disregarded upon assembly of
second side.
