Gorman-Rupp Pumps 810A2-F6L All serial numbers - Manual (Page 26)

OM−02754 80 SERIES
MAINTENANCE & REPAIR PAGE E − 7
to prevent injuries to personnel or dam-
age to equipment. Suction and dis-
charge hoses and piping must be re-
moved from the pump before lifting.
For ease of reassembly, tie and tag the casing gas-
ket set or measure and record their thickness.
Inspect the wear plate (39) and replace if scored or
worn. To remove the wear plate, disengage the
hardware (41 and 42) from the wear plate studs
(40) and pull the wear plate and O-ring (38) from
the pump casing. Remove the O-ring.
NOTE
Do not remove the impeller until the rotating assem-
bly has been removed from the pump casing.
Impeller Removal
(Figure 2)
Before removing the impeller, turn the cross arm on
the automatic lubricating grease cup (15) clock-
wise until it rests against the cover (see Figure 5 in
LUBRICATION). This will prevent the grease in the
cup from escaping when the impeller is removed.
Use an impeller wrench to remove the impeller. If
an impeller wrench is not available, place a block of
wood against one of the vanes and strike it sharply
with a hammer. Be careful not to damage the
vane. Unscrew the impeller in a counterclockwise
direction (when facing the impeller). Use caution
when removing the impeller; tension on the seal
spring will be released as the impeller is un-
screwed.
Inspect the impeller and replace it if cracked or
badly worn. Slide the impeller adjusting shims (4)
off the shaft (25). For ease of reassembly, tie and
tag the shims or measure and record their thick-
ness.
Seal Removal
(Figure 2)
Make certain that the cross arm on the grease cup
has been turned down against the cover before re-
moving the seal assembly.
For ease of disassembly, the seal and seal plate
(36) may be removed as a single unit. Before at-
tempting to remove the seal plate, remove the seal
cavity grease cup and piping (15, 16 and 17).
Remove the outer rotating element. Slide the seal
plate and seal parts off the shaft as a unit. Use cau-
tion not to drop or damage the seal parts while slid-
ing them off the shaft.
Carefully remove the outer stationary seat, packing
ring, seal washer and seal spring from the seal
plate. Remove the spacer sleeve, inner seal wash-
er, packing ring, stationary seat and rotating ele-
ment.
NOTE
An alternate method of removing the seal without
removing the seal plate is to remove the outer rotat-
ing element, and use a stiff wire with a hooked end
to pull the remaining seal parts out of the seal plate.
Inspect the seal liner for wear or grooves that could
cause leakage or damage to the seal packing
rings. The seal liner is secured by a press fit into the
seal plate and does not normally require replace-
ment. If replacement is required, see Seal Installa-
tion.
If no further disassembly is required, refer to Seal
Installation.
Separating Intermediate And Drive Assembly
From Engine
(Figure 2)
If it is necessary to separate the intermediate and
drive assembly from the engine, support the inter-
mediate using a suitable hoist and sling. Remove
the hardware (20 and 21) securing the intermedi-
ate (19) and guards (59 and 60) to the engine bell-
housing. Separate the assemblies by pulling
straight away from the engine.
It is not necessary to remove the drive plate assem-
bly (26) from the engine flywheel unless replace-
ment is necessary. To remove the drive plate as-
sembly, remove the hardware (27 and 28) securing
it to the flywheel.