MP Pumps PETROLEUM SELF-PRIMING 30, 40 INSTRUCTION - Manual (Page 3)

This pump is equipped with a self-lubricated
the seal. shaft seal. The self-lubricated seal is
lubricated by the liquid in the pump.
If the pump is to be left standing idle for any
length of time in freezing conditions, the pump
housing should be drained. Draining is provided
for by a plug at the base of the pump housing.
Foreign matter between sealing faces will
cause leakage and shorten life of the seal.
TO REMOVE PUMP HOUSING
MOUNTING PUMP HOUSING
Remove capscrews and nuts holding pump
housing to base (where used).
Replace gaskets on pump housing and
mount housing on the adapter. Replace two
Remove nuts and lock washers holding pump lock washers and nuts on studs diagonally
housing to adapter. across from each other and tighten. Turn
drive shaft over slowly by hand and listen
Loosen the housing and remove carefully to at housing outlet opening for any impeller
prevent tearing gaskets. rubbing on the housing or wear plate.
The clearance between the impeller and
wear plate can be checked with a feeler
gauge. Normal clearance is .015" to .025".
MOUNTING ADAPTER If clearance exceeds .025" readjust impeller.
If the impeller rubs use an additional gasket
Before mounting adapter, clean counterbore to space impeller.
thoroughly.
After clearance has been established,
Clean and lubricate the synthetic member on replace lock washers and nuts on remaining
seal seat and press (do not drive) the assembly studs and tighten. If capscrew and nuts are
into the adapter counterbore, seating it firmly and used to hold housing to mounting base,
squarely against the shoulder being sure that the replace these and tighten.
polished side is facing up.
In handling, avoid dropping seat and take particular care
not to scratch the lapped face.
Press the seal assembly on to the drive sleeve
using a water-soluble lubricant to aid in pressing
the seal assembly.
IMPORTANT
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 impeller working working height.
CAUTION
Operating the pump dry will seriously damage
REASSEMBLY
PRINTED IN THE U.S.A.
FORM 3075-A (6/08)
CAUTION