GORMAN-RUPP PA4C60-4045H, Инструкция по установке, эксплуатации и обслуживанию

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PA SERIES OM−06078
MAINTENANCE & REPAIR PAGE E − 16
To remove the coupling from the shaft, loosen the
setscrew in the coupling hub and slide the cou-
pling off the shaft. Remove the shaft key (5).
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 (3 and 4) securing it to the fly-
wheel.
Move the pump frame to a clean, well-equipped
shop area for further disassembly.
Pump Shaft and Bearing Removal and
Disassembly
(Figure 4)
When the pump is properly operated and main-
tained, the pump frame (16) 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.
NOTE
The bearings in this pump are grease-lubricated.
No provisions are made for draining the lubricant
for disassembly. Position a drip pan under the
frame before proceeding with shaft and bearing re-
moval.
Disengage the capscrews (26) and remove the en-
gine bracket (22) and oil seal (25). Remove the en-
gine bracket shims (27 and 28). Press the oil seal
from the engine bracket.
Disengage the capscrews (13) and and remove
the bracket (12) and oil seal (11). Press the oil seal
from the bracket.
Place a block of wood against the drive end of the
shaft and tap the shaft (23) and assembled bear-
ings (17 and 18) out of the pump frame. The bear-
ing (14) will remain in the bearing frame.
After removing the shaft and bearings, clean and
inspect the bearings
in place as described in
Bearing Cleaning And Inspection .
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the frame. Re-
place the bearings, shaft, or frame if the proper
bearing fit is not achieved.
If bearing replacement is required, remove the
bearing lockwasher and lock nut (20 and 21) and
use a suitably sized sleeve and an arbor (or hy-
draulic) press to remove the bearings (17 and 18)
from the shaft.
Use a suitably sized sleeve and an arbor (or hy-
draulic) press to press the bearing (14) from the
frame.
Bearing Cleaning And Inspection
Clean the frame, shaft and all component parts (ex-
cept the bearings) with a soft cloth soaked in clean-
ing solvent. Inspect the parts for wear or damage
and replace as necessary.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven-
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain-
ers.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
Bearings must be kept free of all dirt and
foreign material. Failure to do so will great-
ly shorten bearing life.
Do not spin dry
bearings. This may scratch the balls or
races and cause premature bearing fail-
ure.
Rotate the bearings by hand to check for rough-
ness or binding and inspect the bearing balls. If ro-
tation is rough, or the balls are discolored, replace
the bearings.