Gorman-Rupp Pumps T6A60S-4045T 1443416 and up - Manual (Page 44)

OM-06183 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 17
of tubing just large enough to slide over the shaft.
Slide the tube over the shaft threads, then slide the
O‐ring off the tube and onto the shaft. Remove the
tube, and continue to slide the O‐ring down the
shaft until it seats against the shaft shoulder.
When installing a new cartridge seal assembly,
remove the seal from the container, and remove
the mylar storage tabs, if so equipped, from be­
tween the seal faces.
New cartridge seal assemblies may be
equipped with mylar storage tabs between
the seal faces. If so equipped, these stor­
age tabs must be removed before install­
ing the seal.
Lubricate the external stationary seat O‐ring with
light oil. Slide the seal assembly onto the shaft until
the external stationary seat O‐ring engages the
bore in the seal plate.
Clean and inspect the impeller as described in Im­
peller Installation and Adjustment. Install the full
set of impeller shims (26) provided with the seal,
and screw the impeller onto the shaft until it is
seated against the seal (see Figure 9).
Continue to screw the impeller onto the shaft. This
will press the stationary seat into the seal plate
bore.
O‐RING ENGAGED
WITH SEAL PLATE
BORE
SHEAR RING
(UNSHEARED)
Figure 9. Seal Partially Installed
NOTE
A firm resistance will be felt as the impeller presses
the stationary seat into the seal plate bore.
As the stationary seat becomes fully seated, the
seal spring compresses, and the shaft sleeve will
break the nylon shear ring. This allows the sleeve
to slide down the shaft until seated against the
shaft shoulder. Continue to screw the impeller onto
the shaft until the impeller, shims, and sleeve are
fully seated against the shaft shoulder (see Figure
10).
STATIONARY SEAT
FULLY SEATED IN
SEAL PLATE BORE
SHEAR RING
(SHEARED)
Figure 10. Seal Fully Installed
Measure the impeller‐to‐seal plate clearance, and
remove impeller adjusting shims to obtain the
proper clearance as described in Impeller Instal­
lation and Adjustment.
If necessary to reuse an old seal in an emer­
gency, carefully separate the rotating and station­
ary seal faces from the bellows retainer and sta­
tionary seat.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema­
ture failure.