Gorman-Rupp Pumps 02F1-GR 642659 and up - Manual (Page 30)

0 SERIES OM-01155
MAINTENANCE & REPAIR PAGE E - 10
ing face, and press the stationary seat into the
pump casing until fully seated. A push tube cut
from a length of plastic pipe would aid this installa­
tion. The O.D. of the tube should be approximately
the same as the O.D. of the seal spring. Be careful
not to damage the seal face. After installation, wipe
the seal face in a concentric pattern with a clean,
lint‐free cloth to remove any fingerprints.
NOTE
It is recommended that a tapered sleeve be in­
stalled over the threads of the impeller shaft to ease
installation of the rotating seal elements.
Subassemble the rotating element into the retainer
and bellows. Slide this subassembly onto the
shaft, and use the push tube to press against the
shoulder of the seal retainer until the seal faces
contact.
Install the seal spring. Make sure that all compo­
nents of the seal are seated squarely.
Impeller And Wear Ring Installation
(Figure 1)
Inspect the impeller (2), wear ring (5) and seal
guard (46), and replace them if cracked or badly
worn. If the wear ring and seal guard were re­
moved, press the replacement parts onto the im­
peller until they are fully seated.
The seal guard must seat squarely on the
impeller or binding and/or excessive wear
will result.
Use the impeller wrench or similar tool to screw the
impeller onto the shaft. After the impeller is tight on
the shaft, remove the gear jam tool. Turn the shaft
to ensure that the impeller rotates freely.
NOTE
Do not install the pipe plug in the gearbox until the
gearbox is properly lubricated as described in LU­
BRICATION.
Replace the cover plate gasket (50), and secure
the cover plate to the pump casing with the nuts
(45).
Securing Pump and Gearbox to Vehicle
The pump assembly can be seriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Due to the confined mounting location,
specialized equipment such as a transmis­
sion jack with custom brackets should be
used to lift and position the pump and
gearbox
Secure the pump casing and gearbox to the ve­
hicle frame with the previously removed hardware.
Install the P.T.O. coupling and secure it to the ve­
hicle universal shaft. Check shaft alignment as de­
scribed in INSTALLATION, Section B.
Install the suction and discharge piping and open
all valves.
Final Pump Assembly
Be sure the pump and gearbox are securely
mounted.
Open any valves in the suction and discharge
lines. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump, gearbox and power source
have been properly lubricated, see LUBRICA­
TION.
Refer to OPERATION, Section C, before putting
the pump back into service.