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VILTER MANUFACTURING CORPORATION
VILTER MultiCylinder Compressor
400 Series VMC 2/01
SERVICE - 26 - Replaces all Previous Issues
bearing housing together. The bearing inserts
are snapped into place and can readily be re-
moved by pushing them out by hand. Clean the
bearing housing thoroughly before installing new
inserts.
Snap the inserts into place. Lubricate the bottom
half with refrigeration oil, and position it on the
crankshaft. Do the same to the upper half, and
locate it using the dowel pins provided. When
aligned, bolt the halves together and tighten with
a torque wrench to the values listed in Table 2, 3
or 4 (depending upon compressor model).
NOTE:
If oil dams are present on the center housing,
they will need to be reinstalled if only changing
the insert bearing. The current center housing
does not require these dams.
E. Reinstallation
Whichever method was used to remove the
crankshaft, extreme care is needed when placing
the shaft back into the frame. Avoid any damage
to the journals, and block the crankshaft once in
position.
If the crankshaft was removed from the front end
and the rear housing left in place with the oil
pump, it is imperative the locating pin on the rear
bearing align with the slot in the bottom of the
rear housing bore. Also, the pump drive key
must engage with the pump shaft.
If the unit is 12 or 16 cylinder, the center bearing
must be guided into place. Align the hole in the
bearing housing (for the oil feed connector tube)
with hole in the frame. Screw the oil feed con-
nector loosely on the end of the ½” (12.7 mm)
threaded rod, and insert it into the hole. Push the
tube into the bearing housing.
Unscrew the rod from the tube. Place the spring
in the hole and screw in the “tee”. Use thread
sealant. Insert the taper pin it its hole. After
placement, pin must be tightened. This expands
the bearing housing so it fits tightly in the frame
for quiet operation.