Gorman-Rupp Pumps PAV3A60C-B 1511107 and up - Manual (Page 35)

OM-06525 PA SERIES
MAINTENANCE & REPAIR PAGE E - 15
inboard oil seal on the shaft shoulder. Secure the
lip seal holder to the bearing housing with the hard­
ware (8 and 12).
Lubricate the bearings as indicated in LUBRICA­
TION at the end of this section.
Securing Rotating Assembly to Driver
(Figures 1, 2 and 3)
See Figure 3 and install the key (34) in the shaft
keyway, making sure to leave room in the keyway
for the drive key (35). Install the sprocket (43, Fig­
ure 2) and bushing (44, Figure 2) on the shaft to the
dimension shown in Figure 6.
Figure 6. 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 (27) over the sprocket and
up through the slot in the mounting flange (25, Fig­
ure 3).
Install the drive key (35, Figure 3) in the shaft key­
way.
Using a suitable lifting device, position the rotating
assembly on the base and secure the flange to the
support (50, Figure 1) with the previously removed
hardware. Reinstall and align the coupling.
Installing Air Compressor Assembly
(Figure 2)
Use a suitable hoist and sling to position the air
compressor assembly (26) on the mounting flange
(25, Figure 3). Slide the belt (27) over the air com­
pressor sprocket (43). Use a pry bar to raise the
compressor high enough to install the spacers (42)
between the compressor and the mounting flange.
Secure the compressor to the mounting flange
with the hardware (10 and 30).
Reinstall the U‐bolt and hardware (31, 32 and 33).
Install the coupling guard (28) and secure it with
the previously removed hardware (10 and 29).
Seal and Impeller Installation
(Figures 3, 7, 8 and 9)
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 7 for seal part identification.