GORMAN-RUPP PUMPS PRIME AIRE PLUS PA10A60C-B, Инструкция по установке, эксплуатации и техническому обслуживанию с перечнем запасных частей

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PAH SERIES OM-06674
MAINTENANCE & REPAIR PAGE E - 16
an alternating pattern to “walk” the impeller off the
shaft.
Remove the impeller adjusting shims (5); tie and
tag the shims, or measure and record their thick­
ness for ease of reassembly.
Inspect the impeller and replace if cracked or badly
worn.
If no further disassembly is required, refer to Seal
Installation .
Seal Removal
(Figures 3 and 8)
Remove the spring centering washer and seal
spring. Slide the shaft sleeve (7) and rotating por­
tion of the seal off the shaft as a unit.
Apply oil to the shaft sleeve and work it up under
the rubber bellows. Slide the rotating portion of the
seal off the shaft sleeve. Remove the shaft sleeve
O‐ring (8).
Use a pair of stiff wires with hooked ends to remove
the stationary element and O‐ring from the seal
plate bore.
An alternate method of removing the stationary
seal components is to remove the hardware (15
and 16) and separate the seal plate and gasket
(14) from the pedestal (18). Position the seal plate
on a flat surface with the impeller side down. Use a
wooden dowel or other suitable tool to press on the
back side of the stationary element until the ele­
ment and its O‐ring can be removed.
Separating Rotating Assembly From Power
Source
(Figure 1)
The pump and drive assembly must be separated
from the engine before further disassembly.
Disengage the hardware (8) and remove the belt
guard assembly (10).
See Figure 4 and remove the hardware (14, 15, 16
and 17) securing the air compressor assembly (1)
to the bracket (12). Use a pry bar to raise the air
compressor high enough to remove the spacers
(18).
Remove the belt (9) from the air compressor drive
pulley (not shown). Remove the hardware (3, 4, 15
and 18) securing the pedestal (16, Figure 3) to the
support assembly (17).
Support the pedestal using a hoist and sling and
remove the coupling from the impeller shaft (26,
Figure 3).
Move the pedestal to a clean, well equipped shop
area for further disassembly.
Remove any leveling shims used under the pedes­
tal mounting feet. Tie and tag the shims for ease of
reassembly.
Remove the capscrews from the center of the
bushing (34). Reinstall the capscrews in the
tapped holes in the bushing and tighten them in an
alternating pattern until the bushing is “jacked” out
of the sprocket (35). Slide the bushing and sprock­
et off the shaft. Remove the key (24, Figure 3).
Shaft and Bearing Removal and Disassembly
(Figure 3)
When the pump is properly operated and main­
tained, the bearing housing should not require dis­
assembly. 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.
Before attempting to remove the shaft and bear­
ings (23 and 28), position a container (1 gallon [4
liters] minimum capacity) under one of the bearing
cavity drain plugs (17A). Remove the plug and
drain the oil from the bearing cavity into the con­
tainer. Clean and reinstall the drain plug.
Remove the shaft key (25). Disengage the hard­
ware (14A and 15A) and remove the drive flange