Vilter VSM 71-701, Operation And Service Manual

Page: 65 / 244

65
Service
E) Remove plug on the thrust bearing housing.
Loosen the socket head cap screw that is lo-
cated underneath the plug. This secures the
inner races of the thrust bearings to the
spindle.
F) Remove bolts that hold the thrust bearing
housing to the compressor. Insert two of the
bolts into the threaded jacking holes to as-
sist in removing the bearing housing from
the compressor. When the housing is re-
moved, there will be shims between the
spindle and thrust bearings. These control
the clearance between the shelf and gate ro-
tor blades. These must be kept with their
respective parts for that side of the compres-
sor.
G) Remove the bolts from the roller bearing
housing. After the bolts have been removed,
the housing can be removed from the com-
pressor.
H) To remove the gate rotor support, carefully
move the support opposite the direction of
rotation and tilt the roller bearing end to-
wards the suction end of the compressor. The
compressor input shaft may have to be turned
to facilitate the removal of the gate rotor sup-
port. On dual gate versions, repeat the pro-
cedure for the remaining gate rotor support
assembly.