Gorman-Rupp Pumps PA4A60C-C2.2T 1394774 and up - Manual (Page 44)

PA SERIES OM-05783
MAINTENANCE & REPAIR PAGE E - 22
with the lip positioned as shown in Figure 5. Press
the oil seal into the housing until the face is just
flush with the machined surface on the housing.
It is recommended that a sleeve be positioned
against the inboard oil seal to prevent the lip of the
oil seal from rolling as the shaft and bearings are
installed in the bearing housing. The O.D. of the
sleeve should be just smaller than the bearing
housing bore, while the I.D. of the sleeve should be
just larger than the O.D. of the lip seal area of the
shaft.
With the lip seal sleeve in place, lubricate the lip
seal area of the shaft, and slide the shaft and as­
sembled bearings into the bearing housing until
the retaining ring on the outboard bearing seats
against the bearing housing. Remove the lip seal
sleeve.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Apply a light coating of oil to the lip of the outboard
oil seal (6) and press it into the bearing housing
with the lip positioned as shown in Figure 5. The
face of the oil seal should be just flush with the ma­
chined face of the bearing housing.
Apply a light coating of oil to the lip of the oil seal
(6A) and press it into the mounting flange (18) with
the lip positioned as shown in Figure 5. The face of
the oil seal should be flush with the chamfer on the
mounting flange bore.
Install the mounting flange gasket (19) and secure
the mounting flange to the bearing housing with
the hardware (16 and 17). Be careful not to dam­
age the lip of the oil seal on the shaft keyway.
Lubricate the bearings as indicated in LUBRICA­
TION at the end of this section.
Securing Bearing Housing And Drive Assembly
To Engine
(Figure 3)
Install the key (31, Figure 5) in the shaft keyway,
making sure to leave room in the keyway for the
drive key (23, Figure 5). Install the sprocket (24)
and bushing (25) on the shaft to the dimension
shown in Figure 11.
NOTE
When properly installed to the dimension shown in
Figure 11, the key (23, Figure 5) will not extend fully
through the bushing. This is an acceptable fit for
this application.
Figure 11. Drive Sprocket Positioning
Secure the bushing and sheave to the shaft by
torqueing the bushing screws to 23.3 ft. lbs. (280
in. lbs. or 3,2 m. kg.). Install the belt (9) over the
sprocket and up through the slot in the mounting
flange (18, Figure 5).
(Figure 9)
Install the shaft key (23, Figure 5) in the shaft key­
way. Position the flexible portion of the coupling as­
sembly (3) on the shaft as shown in Figure 5.
NOTE
The flexible portion of the coupling must be proper­
ly positioned on the shaft. The heads of the caps­
crews in the center of the coupling must be posi­
tioned away from the pump.
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.