Gorman-Rupp Pumps PA6B60-6068H 1421583 and up - Manual (Page 39)

OM−06250 PA SERIES
MAINTENANCE & REPAIR PAGE E − 17
never press or hit against the outer race,
balls, or ball cage. Press only on the inner
race.
After the bearing is installed on the shaft, pack the
bearing by hand with No. 0 lithium base grease un-
til the bearing balls are thoroughly lubricated. Se-
cure the bearing on the shaft with the inboard bear-
ing retaining ring (15).
Position the intermediate with the impeller end
down. Slide the shaft and assembled bearing into
the intermediate bore until the bearing seats
squarely against the bore shoulder.
If removed, install the retaining ring (16) in the
groove in the oil chamber plate (26). Install a new
O-ring (27) in the groove in the oil chamber plate
and lubricate it with light oil.
Install the same thickness of bearing adjusting
shims (29) as previously removed. Pack the bear-
ing retainer (17) approximately 1/2 full with No. 0
lithium base grease and position it against the
bearing. Install a new gasket (28) and position the
oil chamber plate in the intermediate with the
chamfered edge toward the bearing. Press the oil
chamber plate into the intermediate until the retain-
ing ring (16) is fully seated against the bearing. Se-
cure the oil chamber plate to the intermediate with
the hardware (25 and 47).
Check the shaft endplay. Shaft endplay should be
between .002 and .010 inch (0,05 and 0,25 mm).
Add or remove shims from the bearing adjusting
shim set until the correct endplay is achieved.
When installing the shaft and bearing into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Position the intermediate on a flat work surface with
the impeller end up. Lubricate the lips of the oil
seals (30) and press them into the intermediate
bore, one at a time, with the lips positioned as
shown in Figure 4.
Lubricate the bearing cavity as indicated in LUBRI-
CATION at the end of this section.
Securing Intermediate And Drive Assembly To
Engine
(Figure 4)
Make certain that the metal hub portion of
the coupling is mounted on the shaft to the
dimension indicated below. This is criti-
cal. If the coupling is not properly posi-
tioned on the shaft, the coupling parts will
not fully engage.
Install the shaft key (19) in the shaft keyway. Posi-
tion the metal hub portion of the coupling assembly
(18) on the shaft with the teeth" on the hub toward
the pump. Slide the hub onto the shaft until the face
of the hub is 3.5 inches (12,7 mm) from the end of
the shaft. Secure the hub to the shaft by torquing
the setscrew to 1.5 ft. lbs. (290 in. lbs or 0,2 m. kg.).
If removed, apply ’Never-Seez’ or equivalent com-
pound to the I.D. of the pilot bushing (21) and press
it into the engine flywheel until fully seated.
If the complete coupling assembly is being re-
placed, apply ’Loctite Threadlocker No. 242’ or
equivalent compound to the threads of the hare-
dware (23 and 24) and secure the elastic element
portion of the coupling to the engine flywheel by
torquing the hardware to 50 ft. lbs. (600 in. lbs. or
6,9 m. kg.).
Using a suitable lifting device and sling, position
the assembled coupling, intermediate, shaft and
bearings so the metal hub portion of the coupling
seats inside the elastic element portion attached to
the engine flywheel.
Secure the intermediate to the engine bellhousing
with the previously removed hardware (22 and 23).
Pump Casing Installation
(Figure 4)
If the balance ring (36) was removed, press the re-
placement ring into the casing until it seats square-
ly against the casing shoulder.