Gorman-Rupp Pumps PAV3C60C-B-E10 575/3 All serial numbers - Manual (Page 46)

OM-06502 PA SERIES
MAINTENANCE & REPAIR PAGE E - 19
Securing Rotating Assembly to Motor
(Figures 1, 2 and 4)
See Figure 4 and install the key (41) in the shaft
keyway, making sure to leave room in the keyway
for the drive key (42). Install the sprocket (43) and
bushing (40) on the shaft to the dimension shown
in Figure 8.
Figure 8. Drive Sprocket Positioning
Secure the bushing and sprocket to the shaft by
torqueing the bushing screws to (55 in. lbs. or 6,3
m. kg.). Install the belt (38) over the sprocket and
up through the slot in the mounting flange (10, Fig­
ure 5).
Install the drive key (42) in the shaft keyway.
See Figure 2 and install the half of the coupling (7)
on the impeller shaft. Using a suitable lifting device,
position the rotating assembly on the base and se­
cure the flange to the support (5, Figure 1) with the
previously removed hardware. Align the coupling
halves and reinstall the attaching hardware.
Installing Air Compressor Assembly
(Figure 4)
Use a suitable hoist and sling to position the air
compressor assembly (19) on the mounting flange
(10, Figure 5). Slide the belt (38) over the air com­
pressor sprocket (18, Figure 6). Use a pry bar to
raise the compressor high enough to install the
spacers (36) between the compressor and the
mounting flange. Secure the compressor to the
mounting flange with the hardware (13 and 14).
Reinstall the U‐bolt and hardware (22, 23 and 24).
Install the coupling guard (8, Figure 1) and secure
it with the previously removed hardware (19 and
24, Figure 1).
Seal and Impeller Installation
(Figures 5, 9, 10 and 11)
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 external stationary seat O‐
ring with a very small amount of light lubricating oil.
See Figure 9 for seal part identification.