GORMAN-RUPP 03H1-GR, Инструкция по установке, эксплуатации и обслуживанию

Страница: 32 / 35

0 SERIES OM-01194
MAINTENANCE & REPAIR PAGE E - 12
shafts, gear housing, or seal plate if the proper
bearing fit is not achieved.
If the bearings, pinion shaft, or helical drive gear re­
quire replacement, use a suitable puller to remove
the bearings from the shafts. Slide the spacer (22)
and drive gear off the drive shaft. Retain the wood­
ruff key (16).
GEARBOX REASSEMBLY
Clean and inspect the bearings as indicated in
GEARBOX DISASSEMBLY .
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected
in place . It is
strongly recommended that the bearings
be replaced any time the shaft and and
bearings are removed.
Inspect the helical gear (21) and pinion shaft (2) for
excessive wear or broken teeth and replace as re­
quired.
Install the woodruff key (16) in the shaft keyway,
and slide the helical gear onto the shaft. Position
the spacer (22) against the inboard side of the heli­
cal gear.
The bearings (7, 7A, 18 and 18A) may be heated to
ease installation. An induction heater, hot oil bath,
electric oven, or hot plate may be used to heat the
bearings. Bearings should
never be heated with a
direct flame or directly on a hot plate.
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.
Heat the bearings to a uniform temperature no
higher than 250
_
F (120
_
C) and slide them onto the
shafts, one at a time, until they are fully seated. 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 an arbor (or hydraulic) press
to install the bearings onto the shafts.
When installing the bearings onto the
shafts,
never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
With the bearings, helical gear and spacer in­
stalled on the drive and pinion shafts, mesh the
teeth on the helical drive gear with those on the pin­
ion shaft, and slide both shafts into the gear hous­
ing (25) until the outboard bearings are seated in
the bearing bores of the gear housing.
If the oil seal (3) was removed, apply a light coating
of oil to the lip of the replacement seal, and position
it in the seal plate (27) with the lip positioned as
shown in Figure 2. Press the oil seal into the seal
plate until the inner side of the seal is
just flush with
the inside of the seal plate.
Install the seal plate gasket (26) and slide the seal
plate over the inboard bearings. Install the cap­
screws (28) to align the gearbox halves. Use a
hammer and punch to tap the dowel pins (31) into
the alignment holes in the gear housing (25) until
flush. Use the remaining hardware (29 and 30) to
secure the seal plate to the gear housing.
If the oil seal (12) was removed, apply a light coat­
ing of oil to the lip of the replacement seal, and po­
sition it in the cover plate (9) with the lip positioned
as shown in Figure 2. Press the oil seal into the cov­
er plate until the inner side of the seal is
just flush
with the inside of the cover plate.
Position the cover plate gasket (9) against the gear
housing. Install the same thickness of bearing ad­