Gorman-Rupp Pumps 12C2-B 722995 and up - Manual (Page 33)

OM-00602 10 SERIES
MAINTENANCE & REPAIR PAGE E - 10
leveling shims used under the mounting feet of the
pump casing.
Suction Check Valve Installation
Inspect the check valve (8) and the other compo­
nents of the check valve assembly (5) and replace
any badly worn or damaged parts.
Position the spacer sleeves (7) in the holes in the
check valve. Insert the nylock capscrews (10)
through the backup plate (9) and check valve.
Screw the nylock capscrews into the adaptor (6)
until fully seated.
Reach through the back cover opening with the
check valve and position the check valve adaptor
in the mounting slot in the suction flange (57). Align
the adaptor with the flange hole and secure the as­
sembly with the check valve pin (4).
Back Cover Installation
If the wear plate (41) was removed for replace­
ment, secure it to the cover plate (53) using the at­
taching hardware (42 and 43) at this time. The wear
plate must be concentric to prevent binding when
the back cover is installed.
Clean any scale or debris from the contacting sur­
faces on the pump casing that might prevent a
good seal with the back cover. Replace the back
cover gasket (40) and slide the back cover assem­
bly into the pump casing. Be sure the wear plate
does not bind against the impeller.
NOTE
To ease future disassembly, apply a film of grease
or `Never‐Seez' on the back cover shoulder, or any
surface that contacts the pump casing. This action
will reduce rust and scale build‐up.
Secure the back cover assembly by installing the
clamp bar (45) and tightening the clamp bar screw
(47). Do not over‐tighten the clamp bar screw; it
should be just tight enough to seal the back cover
shoulder.
Final Pump Assembly
Be sure the pump and power source are securely
mounted to the base. Reconnect the power source
to the pump.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
If a lifting eye was used to move the pump casing,
be sure to remove the lifting eye from the pump
casing.
Be sure the pump and power source have been
properly lubricated, see LUBRICATION.
Fill the pump casing with clean liquid. Reinstall the
fill plug (12) and tighten it.
Refer to OPERATION, Section C, before putting
the pump back into service.
LUBRICATION
Seal Assembly
(Figures 1 and 4)
Fill the grease cup (18) through the grease fitting
with No. 2 lithium base grease until grease es­
capes from the relief hole. Turn the grease cup arm
counterclockwise until it is at the top of the stem;
this will release the spring to apply grease to the
seal (see Figure E-4).