Gorman-Rupp Pumps 82H65-B 1015831 and up - Manual (Page 24)

OM−03696 80 SERIES
MAINTENANCE & REPAIR PAGE E − 5
reassembly. Tie and tag any leveling shims used
under the casing mounting feet to ease reassemb-
ly.
Inspect the wear plate assembly (33) and replace it
if badly scored or worn. To remove the wear plate
assembly, remove the capscrew (40) and fiber
washer (39) just below the suction port. Reach
through the suction port and disengage the hard-
ware (56 and 57) from the wear plate stud. Tap the
wear plate assembly free of the casing.
Impeller Removal
Immobilize the impeller by wedging a block of
wood or a brass rod between the vanes.Remove
the shaft key (19). Install a lathe dog with the V"
notch positioned over the keyway. Remove the im-
peller capscrew and washer (34 and 35).
To loosen the impeller (2), strike the lathe dog
sharply in a counterclockwise direction (when fac-
ing the shaft). When the impeller breaks loose, re-
move the wood block and lathe dog. Unscrew the
impeller in a counterclockwise direction.
Inspect the impeller and replace it if cracked or
badly worn. Slide the impeller adjusting shims (5)
off the impeller shaft. Tie and tag the shims, or
measure and record their thickness for ease of
reassembly.
Seal Removal
(Figures 1 and 2)
Carefully slide the seal plate (31), seal clamp (7),
shaft sleeve (8), and assembled seal parts off the
shaft (18) as a unit. Remove the nuts (28) securing
the seal clamp (7) to the seal plate. Slide the sta-
tionary seat and gaskets off the shaft sleeve. In-
spect the gaskets and the polished seal faces for
damage or wear.
There are setscrews around the circumference of
the seal retainer. These screws secure the seal as-
sembly to the shaft sleeve (8) and ensure proper
spring tension. Using an allen wrench, loosen the
seal retainer setscrews, and slide the rotating por-
tion of the seal off the shaft sleeve.
If no further disassembly is required, see Seal
Reassembly and Installation.
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main-
tained, the pedestal should not require disassem-
bly. Disassemble the shaft and bearings only
when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
Remove the pedestal drain plug (26) and drain the
pedestal. Clean and reinstall the plug.
Remove the slinger ring (9) from the shaft. Remove
the pedestal mounting hardware from the base.
Tie and tag any shims used under the mounting
feet for leveling.
Use snap ring pliers to remove the bearing retain-
ing ring (17) from the pedestal bore. Remove the
bearing shim set (22); tie and tag the shims, or
measure and record their thickness for ease of
reassembly.
Remove the setscrews (20) from the bearing re-
tainer (26) and install two machine screws
(#10−32 X 1 inch long, not supplied). Pry the re-
tainer from the pedestal bore using a screwdriver
against the head of the machine screws. Do not
use the machine screws to jack against the ball
bearing. Remove the machine screws and reinstall
the setscrews.
Press the oil seal (21) from the bearing retainer,
and remove the O-ring (16) from the pedestal bore.
Place a block of wood against the impeller end of
the shaft and tap the shaft and assembled bear-
ings (11 and 15) out of the pedestal.
Press the oil seal (10) from the pedestal bore.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.