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F00636
Impeller Removal
Maintenance
Clockwise Rotation
Volutes shown.
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1. Remove the volute and the old gasket(s) and O-Ring(s).
Discard the gaskets and O-rings.
•
Check the clearance between the impeller hub and the
volute wear ring. If it is more than .020” on a side,
replace the wear ring.
NOTE:
Certain models, such as the B4EY, have a suction
cover which is removed first to gain access to the impeller.
On these models, remove the access cover, then remove
the impeller (see below), and then remove the seal from
the volute.
2. Remove the impeller:
A. Pull keyed impellers off the shaft with a standard gear
puller against the end of the shaft and pulling on the
impeller.
NOTE:
Place the puller’s fingers against the vanes in the
impeller. Pulling on the impeller’s unsupported back shroud
could easily break the impeller.
B. Unscrew threaded impellers.
NOTE:
Pumps with clockwise rotation as viewed from the
shaft (engine) end have a right-hand threaded impeller.
Pumps with counterclockwise rotation as viewed from the
shaft (engine) end have a left-hand threaded impeller. The
impeller cap screw is always right-hand thread.
BERKELEY
4041 0901
BERKELEY
R
E
M
O
VE
Clockwise rotation
as viewed
from shaft end.
Right Hand
Thread
Hold pump shaft
stationary, being
careful not to
damage shaft.
Impeller will be
extremely tight
on shaft.
Key
Gear Puller
Jackscrew
Note:
A hexnut placed between the
jackscrew and shaft end will
prevent damage to the shaft
and impeller screw threads.
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Gear Puller
Fingers behind
Impeller Vanes
Summary of Contents for S.A.E.
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