Gorman-Rupp Pumps 86A2-F3L 1022351 and up - Manual (Page 24)

80 SERIES OM−00955−04
MAINTENANCE & REPAIR PAGE E − 8
Inspect the wear plate (38), and replace if scored or
worn. To remove the wear plate, disengage the
hardware (40 and 41) from the wear plate studs,
and pull the wear plate from the pump casing.
Impeller Removal
(Figure 2)
Before removing the impeller, turn the cross arm on
the automatic lubricating grease cup (18) 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 (2).
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 counterclock-
wise direction (when facing the impeller). Use cau-
tion 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 (13)
off the shaft. For ease of reassembly, tie and tag the
shims or measure and record their thickness.
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 au-
tomatic grease cup and piping (16, 17 and 18).
Remove the outer rotating element. Slide the seal
plate, spacer sleeve, and remaining seal parts off
the shaft as a unit. Slide the seal washer (15) off the
shaft.
Carefully remove the spacer sleeve, outer station-
ary seat, rotating element, packing ring, seal wash-
er, and seal spring from the seal plate. Remove the
inner seal washer, packing ring, stationary seat
and rotating element.
Inspect the seal liner (14) for wear or grooves that
could cause leakage or damage to the seal pack-
ing rings. The seal liner is secured by a press fit into
the seal plate and does not normally require re-
placement. If replacement is required, see Seal In-
stallation.
If no further disassembly is required, refer to Seal
Installation.
Separating Intermediate And Drive Assembly
From Engine
(Figure 3)
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 (6 and 7) securing the intermediate
and guards (21 and 29, Figure 2) to the engine bell-
housing. Separate the assemblies by pulling
straight away from the engine.
As the assemblies separate, the flexible portion of
the coupling assembly (3) will remain on the shaft.
To remove the coupling from the shaft, unscrew the
two allen head setscrews from the bushing (2).
Screw one of the setscrews into the puller hole on
the circumference of the bushing. As the coupling
and bushing separate, remove the bushing, and
slide the coupling off the shaft. Remove the shaft
key (25, Figure 2).
It is not necessary to remove the outer ring of the
coupling from the engine flywheel unless the cou-
pling must be replaced. To remove the ring, disen-
gage the hardware (4 and 5) securing it to the fly-
wheel.
Move the pump end to a clean, well equipped shop
area for further disassembly.
Shaft and Bearing Removal and Disassembly
(Figure 2)
When the pump is properly operated and main-
tained, the intermediate should not require disas-
sembly. Disassemble the shaft and bearings only
when there is evidence of wear or damage.
Shaft and bearing disassembly in the field