MP Pumps PETROLEUM SELF-PRIMING 5, 8, 10, 15 INSTRUCTION - Manual (Page 4)

The assembly of impeller and seal to the drive
shaft should take place as soon as the bellows
assembly is slipped on the impeller sleeve so
as to avoid bonding of the bellows to the sleeve
at the improper working height.
Foreign matter between sealing faces will
cause leakage and shorten life of the seal.
MOUNTING PUMP HOUSING
the housing on the adapter. Replace two lock
washers and nuts on studs diagonally across
from each other and tighten.
Then lubricate both faces with a clean light
oil.
shaft, wipe the lapped sealing faces of the
floating seat (Part 4) in the adapter counter
bore and the carbon washer (Part 3) on the
bellows assembly perfectly clean.
proper assembly on the drive sleeve.
Before sliding the impeller onto the drive
onto the impeller drive sleeve. Push the seal
down over the drive sleeve with even pressure.
Pull the seal head back up to the position
where there is no spring load. This insures
CAUTION
a clean light oil.
SEAL ASSEMBLY (See Fig.1)
Install adapter. Install lock washers and tighten
four nuts evenly. IMPORTANT
Slip the spring (Part 1) onto the impeller
on the shoulder of the impeller.
or crocus cloth. Then clean and lubricate with
nicks and burrs. Polish sleeve with fine emery
Mount seat and seat ring (Part 4 and 5) as
and slide it onto the impeller drive sleeve only
until it clears the chamfer.
Turn drive shaft over slowly by hand and listen
at outlet opening on housing for any rubbing of
the impeller on the housing or wear plate.
sleeve making certain that it is seated properly
Replace gaskets on pump housing and mount Lubricate the inside of the washer and bellows
assembly (Part 2 and 3) with a clean light oil
Slide the seal bellows and washer assembly
The clearance between the impeller and wear
plate can be checked with a feeler gauge.
Normal clearance is .015" to .025". If the
clearance exceeds .025" readjust impeller. If
the impeller rubs use an additional gasket to
space impeller.
After clearance has been established, replace
FORM 3074-A (2/08)
PRINTED IN THE U.S.A.
lock washers and nuts on remaining studs and
tighten. If cap screw and nuts are used to hold
housing to mounting base, replace these and
tighten.
outlined above. Inspect impeller sleeve for
MOUNTING SELF-LUBRICATED