Gorman-Rupp Pumps 84A2-F3L 1348524 and up - Manual (Page 35)

OM−00900 80 SERIES
MAINTENANCE & REPAIR PAGE E − 15
Suction Check Valve Installation
(Figure 2)
Inspect the check valve components and replace
them as required. Subassemble the check valve
weights (51 and 53) and gasket (52) using the at-
taching hardware (49 and 50).
Install the check valve assembly in the valve seat
(54). Replace the seat gasket (55), and secure the
valve seat to the suction port using the round head
machine screws (47). Replace the suction flange
gasket (42), and secure the suction flange (43) to
the seat with the nuts (45).
Check the operation of the check valve to ensure
proper seating and free movement.
Final Pump Reassembly
(Figure 1)
Be sure the pump and intermediate are secured to
the base (47) and engine.
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 and engine have been properly
lubricated, see LUBRICATION.
Before starting the pump, remove the fill plug as-
sembly (12, Figure 2) and fill the pump casing with
clean liquid. Reinstall and tighten the fill plug (see
OPERATION, Section C).
LUBRICATION
Seal Assembly
(Figure 2)
Fill the grease cup (16) 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 5).
GREASE
FITTING
CROSS
ARM
POSITION
WHEN
EMPTY
POSITION
FOR
FILLING
POSITION
WHEN
IN USE
RELIEF
HOLE
Figure 5. Automatic Lubricating Grease Cup
Bearings
(Figure 2)
The intermediate was fully lubricated when
shipped from the factory. Under normal conditions,
turn the cap on the grease cup (18) three complete
turns to add No. 0 lithium base grease to the inter-
mediate after each 250 hours of operation or once
each month, whichever comes first. Do not over-
lubricate. Over-lubrication can cause the bearings
to over-heat, resulting in premature bearing failure.