Gorman-Rupp Pumps 610M20-B 688324 and up - Manual (Page 28)

OM−01391 60 SERIES
MAINTENANCE & REPAIR PAGE E − 9
toward the pedestal and slide it onto the shaft until
fully seated against the shaft shoulder. This should
be done quickly, in one continuous motion, to pre-
vent the sleeve from cooling and sticking on the
shaft.
Install the oil seal (14) in the seal plate (11) with the
lip positioned as shown in Figure 1. Make sure the
oil seal is fully seated.
Position the seal plate against the pedestal. Be
careful not to damage the oil seal lip on the shaft
threads. Align the bottle oiler hole with the opening
in the pedestal, and temporarily secure the seal
plate to the pedestal using four 1/2-16 by 1-1/2
long capscrews and nuts (not supplied).
Assemble the O-rings into the stationary seat.
Press the stationary element into the stationary
seat. Press this subassembly into the seal plate
bore until fully seated. A push tube cut from a
length of plastic pipe would aid this installation.
The I.D. of the tube should be approximately the
same as the I.D. of the seal spring.
Subassemble the rotating element into the rotating
portion of the seal assembly. Lubricate the shaft
sleeve with water or light oil and slide the rotating
portion of the seal assembly onto the sleeve until
the seal faces contact.
Install the seal spring.
After the impeller has been installed, lubricate the
seal as indicated in LUBRICATION.
Impeller Installation
Inspect the impeller, and replace it if cracked or
badly worn.
If the wear ring (41) was removed, press the re-
placement ring onto the impeller until the outer
edge of the wear ring is just flush with the ma-
chined face of the impeller.
The wear ring must seat squarely on the
impeller; otherwise binding and/or exces-
sive wear will occur as the shaft turns.
Be sure the impeller bore and the shaft are free of
oily film and completely dry. Do not apply lubri-
cants of any kind to the impeller bore or the tapered
section of the shaft. Install the impeller (2) and im-
peller washer (42) on the shaft (26). Make sure the
seal spring seats squarely over the impeller hub.
Coat the threads of the impeller shaft with ‘Never-
Seez’ or equivalent compound. Secure the impel-
ler by torquing the nut (43) to 200 ft. lbs. (2400 in.
lbs or 27,7 m. kg.).
Pump Casing Installation
Remove the four capscrews temporarily holding
the seal plate to the pedestal.
Install the pump casing gasket (7) and pump cas-
ing over the impeller. Secure the seal plate and
casing to the pedestal with the nuts (13).
Suction Head Installation
If removed at disassembly, position the wear ring
(40) in the suction head (39) with the chamfered
end toward the suction head bore. Press the wear
ring into the suction head until it seats squarely
against the bore shoulder.
The wear ring must seat squarely in the
suction head or binding and/or excessive
wear will result.
Install the suction head gasket (48) and secure the
suction head to the pump casing with the nuts (47).
Be careful not to damage either of the wear rings
when positioning the suction head.
Replace any leveling shims used under the suction
head mounting feet.
Final Pump Assembly
Reinstall the bottle oiler and piping (16, 17, 18 and
19) in the seal plate.