Service manual

ROUTINE MAINTENANCE
Bearing grease for ‘R’ series pumps
For optimal service life in an R model pump, the bearings need one of two things prior to start-up
each day. Heat or Grease. Cold Asphalt Rubber (AR) is extremely tough on the bearings and castle
nut assembly inside the pump. If the pump is traced with heat transfer oil, then the bearing areas
will receive adequate heat that will soften the AR. However, if the pump is not traced the bearings
must be greased at the end of the day just after shut-down, but while the pump is still hot. Grease
with high temperature (Mystik JT-6). This will aide in lubricating the bearings and displacing/
diluting the AR prior to the next start-up.
Shaft Seal
After a period of time (based on pressure, operating procedures, material, etc) it will be necessary
to change the shaft seal. This is a fairly easy procedure. If the pump is leaking more than a drop a
minute, or any amount deemed unacceptable, insure the the a seal kit is on hand and follow the
seal replacement procedure;
Seal Replacement Procedure
1. Turn pump o! completely.
2. Ensure that pump is isolated from system by closing
suction and discharge valves.
3. Remove any guards, couplings, bearings, or
companion flanges aft the dust seal (item 16). Remove
the dust seal bracket (item 16) and use a flat head screw
driver to pry out the old seal (item 15).
4. Clean the shaft surface and seal bore of any asphalt /
debris. Inspect and remove any sharp burrs in the
keyway and shaft body. Also inspect for groove worn
into shaft by the old seal. An excessively deep groove
will require shaft replacement.
5. Clear plastic tape can be used to mask keyway prior
to seal installation. Once the keyway is taped, lubricate
with grease. Gently slide main seal (item 15) over shaft, and into seal bore. Install new dust seal
bracket.
6. Replace guards, couplings etc.
BearCat Pumps, LLC
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