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Gorman-Rupp Pumps PA6C60C-F6L 1423057 thru 1477477 User Manual

Page 45

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OM−05771

PA SERIES

MAINTENANCE & REPAIR

PAGE E − 23

IMPELLER

SHAFT

IMPELLER

SHIMS

O-RING

IMPELLER

SPRING

CENTERING

WASHER

SPRING

RETAINER

SHAFT

SLEEVE

STATIONARY

SEAT

BELLOWS

SEAL PLATE

SHAFT

SLEEVE

O-RING

ROTATING

ELEMENT

Figure 10. 46513−149 Seal Assembly

This seal is not designed for operation at
temperatures above 160

_F (71_C). Do not

use at higher operating temperatures.

Lubricate the stationary seat O-ring with water or
light oil. Press the stationary seat into the seal plate
(20) until fully seated.

Position the seal plate over the shaft and secure it
to the bearing housing (4) with the hardware (18
and 19). Be careful not to damage the stationary
seat on the shaft threads.

Lubricate a new seal plate O-ring (38) with grease
and install it in the groove in the seal plate.

To prevent damaging the shaft sleeve O-ring (29)
on the shaft threads, stretch the O-ring over a piece
of tubing. The I.D. of the tubing must be slightly
larger than the O.D. of the shaft. To ease installation

the tubing wall should be as thin as possible. The
length should be long enough to cover the threads
on the end of 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.

Lubricate the O.D. of the seal sleeve with a small
amount of light oil. Slide the rotating subassembly
(consisting of rotating element, bellows and re-
tainer) onto the shaft sleeve (31) until the sealing
face is just flush with the undercut end of the
sleeve.

Slide the assembled shaft sleeve and rotating por-
tion of the seal onto the shaft until the seal faces
contact. Continue to press the sleeve onto the
shaft until it is fully seated against the shaft shoul-
der.

Install the seal spring and centering washer. Lubri-
cate the seal as indicated in LUBRICATION after
the impeller is installed.