Maintenance
The pump does not require any oil or grease for lubrica-
tion. The sealed double row ball bearing is lubricated for
the life of the bearing.
The Mechanical Shaft Seal is lubricated and cooled by
the liquid being pumped. DO NOT RUN DRY. The seal
requires no further maintenance.
The Engine should be stopped and the crankcase oil
level checked at least once every 8 hours of operation. If
necessary, add oil to bring the level up to the Full mark.
Follow engine manufacturer’s recommendations as to
grades of oil to use.
The Timing Belt requires no lubrication. It has a fiber-
glass core, but severe operating conditions may cause it
to stretch. Check the timing belt tension with a belt tension
tester. The belt tension is correct when applying a
midspan 10-lb. load to the belt causes a deflection of 1/4”
(see Figure 6).
Check belt tension as follows:
1. Insert tension tester through 1/2” hole in drive case (at
belt midspan) until it just touches belt. Record the
depth shown on the tester (Figure 6).
2. Depress tension tester until 10 lbs load has been
reached and record new depth (Figure 6).
3. The difference between the two readings should be
1/4” when belt tension is correct.
4. If deflection is more than 1/4”, tighten belt as follows:
A. Loosen (DO NOT REMOVE) the nuts on the four
studs that hold the pump to the drive case.
B. Turn the jackscrew nut clockwise, and retighten
the stud nuts.
There is a wear ring pressed into the bearing bracket
(Models B054728S and B07536S have another one
pressed into the diffuser). The radial clearance at the
factory is .010” (both sides - .005” per side). When the
total clearance increases to .020”, replace the wear
ring(s).
F00650 Page 7
Maintenance
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