Gorman-Rupp Pumps PAV3B60C-3TNV70 1433753 and up - Manual (Page 35)

OM-06260 PA SERIES
MAINTENANCE & REPAIR PAGE E - 17
race, balls, or ball cage. Press only on the
inner race.
Secure the outboard bearing to the shaft with the
snap ring (27)
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Slide the shaft and assembled bearings into the
bearing housing until the retaining ring on the out­
board bearing seats against the bearing housing.
Apply a light coating of oil to the lip of the oil seal (7)
and press it into the mounting flange (25) with the
lip positioned as shown in Figure 3. The face of the
oil seal should be flush with the chamfer on the
mounting flange bore.
Install the mounting flange gasket (26) and secure
the mounting flange to the bearing housing with
the hardware (9 and 24). Be careful not to damage
the lip of the oil seal on the shaft keyway. Torque the
capscrews (24) to 41 ft. lbs. (5,6 m. kg.).
Apply a light coating of oil to the lip of the oil seals
(7A and 7B) and press them into the lip seal holder
(10) with the lips positioned as shown in Figure 3.
Slide the assembled lip seal holder and lip seals
over the shaft, using caution not to roll the lip of the
inboard oil seal on the shaft shoulder. Secure the
lip seal holder to the bearing housing with the hard­
ware (8 and 9).
Lubricate the bearings as indicated in LUBRICA­
TION at the end of this section.
Securing Drive Assembly and Bearing Housing
to Engine
(Figure 2)
Install the key (49) in the shaft keyway, making sure
to leave room in the keyway for the drive key (46).
Install the sprocket (47) and bushing (48) on the
shaft to the dimension shown in Figure 7.
Figure 7. 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 2).
Install the shaft key (46) in the shaft keyway. Posi­
tion the inner hub of the coupling assembly (43) on
the shaft with the hub setscrew toward the drive
end of the shaft. The end of the hub should be just
flush with the end of the shaft. Torque the hub set­
screw to 7 ft. lbs. (1 m. kg.).
Align the keyway in the bushing (2) with the shaft
key, and slide it onto the shaft until the face of the
bushing is just flush with the end of the shaft. Ro­
tate the flexible portion of the coupling until the
tapped holes for the two setscrews align with those
in the bushing, and install the setscrews.
If the flexible portion of the coupling was separated
from the engine flywheel for replacement, secure
the new coupling to the flywheel with the hardware
(44 and 45). Torque the capscrews to 18 ft. lbs. (2,5
m. kg.).
Using a suitable lifting device, position the as­
sembled drive and rotating assembly so the hub of
the coupling seats inside the flexible outer ring at­
tached to the engine flywheel.
Use a suitable hoist and sling to position the air
compressor assembly (26) on the mounting flange
(25, Figure 2). Slide the belt (27) over the air com­
pressor sprocket (18, Figure 3). Use a pry bar to
raise the compressor high enough to install the
spacers (38) between the compressor and the
mounting flange. Secure the compressor to the
mounting flange with the hardware (12 and 29).