Gorman-Rupp Pumps 16D60-4024T 1318311 and up - Manual (Page 34)

OM−05794 10 SERIES
MAINTENANCE & REPAIR PAGE E − 13
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
away from the shaft shoulders in shrinking. If
movement has occurred, use a suitably sized
sleeve and a press to reposition the bearings
against the shaft shoulders.
If heating the bearings is not practical, use a suit-
ably sized sleeve and an arbor (or hydraulic) press
to install the bearings on the shaft.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Slide the shaft (47) and assembled bearings (50
and 52) into the intermediate bore until the inboard
bearing is fully seated against the bore shoulder.
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 inboard oil
seal (17), and position the oil seal over the shaft
with the lip positioned as shown in Figure 3. Press
the oil seal into the intermediate until the face is just
flush with the machined surface on the intermedi-
ate. Use caution not to roll or damage the lip of the
oil seal during installation.
Apply a light coating of oil to the lip of the outboard
oil seal (23), and press it into the bearing cap (26)
with the lip positioned as shown in Figure 3. Posi-
tion the oil seal in the center of the bearing cap.
Install the same thickness of adjusting shims (27)
as previously removed. Install the bearing cap gas-
ket (20), and secure the bearing cap to the interme-
diate with the hardware (21 and 22). Be careful not
to damage the lip of the oil seal on the shaft key-
way.
Shaft endplay should be between .002 and .010
inch (0,05 mm to 0,25 mm). Add or remove adjust-
ing shims as required to acheive the correct end-
play.
Lubricate the bearings as indicated in LUBRICA-
TION at the end of this section.
Securing Intermediate and Drive Assembly To
Engine
(Figure 4)
Install the shaft key (24, Figure 3) in the shaft key-
way. Position the flexible portion of the coupling as-
sembly (3) on the shaft as shown in Figure 4.
Align the keyway in the bushing (2) with the shaft
key, and slide it onto the shaft to the dimension
shown in Figure 4. 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 4.
This dimension is critical. If the coupling
is not properly positioned on the shaft, the
coupling parts may not fully engage, or a
pre-load condition can cause premature
bearing failure.
The end of the shaft must be recessed
0.41 inch (10,4 mm) from the face of the
bushing. This will allow the two portions of
the coupling to fully engage when the inter-
mediate is secured to the engine bellhous-
ing, without 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 (4
and 5), 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.).