GORMAN-RUPP PUMPS PRIME AIRE PLUS PA10A60C-B, Инструкция по установке, эксплуатации и техническому обслуживанию с перечнем запасных частей

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PAH SERIES OM-06674
MAINTENANCE & REPAIR PAGE E - 18
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be
absolutely
clean. If
the oil has been previously used, it must be
thor­
oughly
filtered.
Position the retaining ring (24) over the shaft prior
to installing the second bearing.
Heat the bearings to a uniform temperature no
higher than 250 F (120 C) and slide them one at a
time onto the shaft until fully seated against the
shaft shoulders. This should be done quickly, in
one continuous motion, to prevent the bearings
from cooling and sticking on the shaft.
Use caution when handling hot bear­
ings to prevent burns.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
out of position in shrinking. If movement has oc­
curred, use a suitably sized sleeve and a press to
reposition the bearings.
If heating the bearings is not practical, use a suit­
ably sized sleeve and a 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.
Secure the assembled shaft and bearings by
clamping on the surface between the bearings.
Use caution not to scratch or mar the part number
on the shaft in this area. Install the bearing lock
washer (22) and bearing lock nut (21). Torque the
lock nut to 150 ft. lbs. (20,7 m. kg.). Locate the tab
on the lock washer that aligns with a slot in the lock
nut and bend the tab over into the slot.
Install the oil seal (12A) in the pedestal with the lip
positioned as shown in Figure 6. Make sure the oil
seal is just flush with the machined face of the ped­
estal I.D.
Slide the shaft into the pedestal bore until the in­
board bearing (28) is past the bore for the outboard
bearing (23). Use a pair of snap ring pliers to install
the retaining ring (24) in the groove in the pedestal
I.D. Continue to slide the shaft and assembled
bearings into the pedestal until the outboard bear­
ing seats against the retaining ring. Use caution
not to cut the lip of the oil seal (12A).
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 oil seal
(19) and press it into the drive flange (18) with the
lip positioned as shown in Figure 6. The face of the
oil seal should be just flush with the outer face of
the bearing cap. Inspect and remove any sealant
shavings from the O.D. of the lip seal.
Install the drive flange gasket (20). Apply “Loctite
Threadlocker No. 242” or equivalent compound to
the capscrews (15A) and secure the bearing cap to
the pedestal with the hardware (14A and 15A).
Torque the capscrews (15A) in a criss‐cross pat­
tern to 80 ft. lbs. (11 m. kg.). Torque the capscrews
again in a criss‐cross pattern to 110 ft. lbs. (15 m.
kg.), going around the bolt circle 1‐1/2 times.
Install the shaft key (25) in the shaft keyway. Slide
the bushing and sprocket (8 and 9) onto the shaft
to the dimension shown in Figure 7. Install the
bushing setscrews and tighten the setscrews in an
alternating sequence to secure the sprocket to the
shaft. Torque the setscrews to 66.7 ft. lbs. (800 in.
lbs. or 9,2 m. kg.).
Lubricate the pedestal as indicated in LUBRICA­
TION at the end of this section.