Gorman-Rupp Pumps PA6C60-4045T 1416818 thru 1481444 - Manual (Page 40)

PA SERIES OM-06199
MAINTENANCE & REPAIR PAGE E - 20
Install the thrust washer (20) and secure the out­
board bearing (21) to the shaft with the snap ring
(19).
Apply a light coating of oil to the lip of the inboard oil
seal (4) and press it into the bearing housing with
the lip positioned as shown in Figure 4. Press the
oil seal into the housing until the face is just flush
with the machined surface on the housing.
Slide the shaft and assembled bearings into the in­
termediate bore until the integral retaining ring on
the O.D. of the outboard bearing is fully seated
against the bearing housing shoulder. Use caution
not to damage the lip seal (4) on the shaft threads.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Install the drive flange gasket (18) and secure the
drive flange (16) to the bearing housing with the
hardware (13 and 14).
Apply a light coating of oil to the lip of the oil seal
(15) and press it into the drive flange with the lip po­
sitioned as shown in Figure 5. Be careful not to
damage the lip of the oil seal (12) on the shaft key­
way. The face of the oil seal should be just flush
with the outer face of the drive flange.
Lubricate a new bearing housing O‐ring (31) with
grease and install it in the groove in the bearing
housing.
Lubricate the bearings as indicated in LUBRICA­
TION at the end of this section.
Securing Bearing Housing And Drive
Assembly To Engine
(Figure 8)
Install the shaft key (22, Figure 5) in the shaft key­
way. Position the flexible portion of the coupling as­
sembly (1) on the shaft as shown in Figure 8.
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 toward the drive end of the shaft.
Align the keyway in the bushing (2) with the shaft
key, and slide it onto the shaft to the dimension
shown in Figure 8. Rotate the flexible portion of the
coupling until the tapped holes for the two set­
screws align with those in the bushing, and install
the setscrews.
Make certain that the flexible portion of the
coupling is mounted as shown in Figure 8.
This is critical. If the coupling is not prop­
erly positioned on the shaft, the coupling
parts may not fully engage, or a pre‐load
condition can cause premature bearing
failure.
The coupling must be positioned 1.44
inches (37 mm) from the end of the shaft.
This will allow the two portions of the cou­
pling to fully engage when the drive flange
is secured to the engine bellhousing, with­
out pre‐loading the bearings.
With the flexible portion of the coupling and the
bushing properly positioned on the shaft, tighten
the two setscrews in an alternating sequence until
the bushing and coupling are fully secured. Torque
the setscrews to 14.6 ft. lbs. (175 in. lbs. or 2 m.
kg.).
If the complete coupling assembly is being re­
placed, apply `Loctite Retaining Compound No.
242' or equivalent to the threads of the hardware (6
and 7), and secure the outer ring of the coupling to
the engine flywheel by torquing the hardware to 45
ft. lbs. (540 in. lbs. or 6,2 m. kg.).
Using a suitable lifting device, position the as­
sembled rotating assembly and coupling so the
flexible portion of the coupling seats inside the out­
er ring attached to the engine flywheel.
NOTE
To ease installation, lightly lubricate the rubber por­
tion of the coupling with a non‐petroleum based
lubricant such as vegetable oil or glycerin, or a sili­
con‐based lubricant such as “WD40” or equivalent.