Gorman-Rupp Pumps PAH4C60C-B 1503565 and up - Manual (Page 37)

PAH SERIES OM-06479
MAINTENANCE & REPAIR PAGE E - 16
the drive key (28, Figure 3). Install the bushing (7)
and sprocket (6) on the shaft to the dimension
shown in Figure 7.
Figure 7. Drive Sprocket Positioning
Secure the bushing and sheave to the shaft by
torqueing the bushing screws to 15 ft. lbs. (180 in.
lbs. or 2,1 m. kg.). Install the belt (8) over the
sprocket and up through the slot in the mounting
flange (20, Figure 3).
Use a suitable hoist and sling to position the air
compressor assembly (12) on the mounting
flange. Slide the belt (8) over the air compressor
sprocket. Use a pry bar to raise the compressor
high enough to install the spacers (2) between the
compressor and the mounting flange. Secure the
compressor to the mounting flange with the hard­
ware (5, 9 and 10). Reinstall the guard (11) and se­
cure it with the hardware (3, 4 and 5).
Reinstall the drive coupling on the impeller shaft.
Using a suitable lifting device, position the pedes­
tal assembly on the base and secure it with the pre­
viously removed hardware. Align the coupling as
described in Installation, Section B.
Seal Reassembly and Installation
(Figures 3 and 8)
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 seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Inspect the stationary
seat bore in the seal plate for dirt, nicks and burrs,
and remove any that exist. The stationary seat bore
must be completely clean before installing the
seal.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema­
ture failure.
To ease installation of the seal, lubricate the shaft
sleeve O‐ring and the stationary element O‐ring
with a very small amount of light lubricating oil.
See Figure 8 for seal part identification.