Gorman-Rupp Pumps 16C20-F5L 1338868 and up - Manual (Page 36)

OM−02616 10 SERIES
MAINTENANCE & REPAIR PAGE E − 15
to facilitate removal or installation of in-
dividual components only. Additional
weight may result in damage to the
pump or failure of the eye bolt.
Suction Check Valve Installation
(Figure 2)
Inspect the check valve assembly (79), and re-
place it if badly worn.
NOTE
The check valve assembly must be replaced as a
complete unit. Individual parts are not sold sepa-
rately.
Replace the seat gasket (70) and secure the check
valve seat (71) to the pump casing with the round
head machine screws (72).
NOTE
If the suction flange or check valve seat was re-
moved, replace the respective gaskets, and apply
‘Permatex Aviation No. 3 Form-A-Gasket’ or equiva-
lent compound to the mating surfaces.
Reach through the back cover opening with the as-
sembled check valve, and position the check valve
adaptor in the mounting slot in the check valve
seat. Align the adaptor with the seat hole, and se-
cure the assembly with the check valve pin (80).
Replace the suction flange gasket (73). Secure the
suction flange (76) to the check valve seat and
pump casing with the hardware (74 and 75).
Back Cover Installation
(Figure 2)
If the wear plate (57) was removed for replace-
ment, carefully center it on the back cover (63) and
secure it with the hardware (58 and 59). 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 in the pump casing that might interfere or
prevent a good seal with the back cover. Replace
the back cover gasket (61) and slide the back
cover assembly (62) 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 which contacts the pump casing. This ac-
tion will reduce rust and scale build-up.
Secure the back cover assembly by tightening the
cover clamp screw (67) against the clamp bar (68).
Do not over-tighten the clamp screw; it should be
just tight enough to ensure a good seal at the back
cover shoulder.
Final Pump Assembly
(Figure 1)
Install any leveling shims used under the pump
casing mounting feet and secure the casing (1) to
the base (47) with the hardware (48, 49, 50 and 51).
Be sure the pump is secured to the base and en-
gine.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump end and engine have been
properly lubricated, see LUBRICATION.
(Figure 2)
Remove the fill cover assembly (24). Fill the pump
casing with clean liquid. Reinstall the fill cover plate
and gasket (28), and tighten the cover.
Refer to OPERATION, Section C, and start the
pump.
LUBRICATION
Seal Assembly
(Figure 2)
Fill the bottle oiler (34) with SAE No. 30 non-deterg-
ent motor oil, making certain to vent the seal cavity
at the air vent (17) while filling. Check the oil level
regularly and keep the bottle oiler full.
Bearings
(Figure 2)
The intermediate was fully lubricated when
shipped from the factory. Check the oil level regu-