GORMAN-RUPP PUMPS 3D-B, Инструкция по установке, эксплуатации и техническому обслуживанию с перечнем запасных частей

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OM-01490 D SERIES
MAINTENANCE & REPAIR PAGE E - 13
(or hydraulic) press to remove the shaft from the
gear.
Use an arbor (or hydraulic) press to remove the
pinion bearing from the gear housing.
NOTE
It is not necessary to remove the drive shaft (35),
drive gear (11), shaft bearings (4 and 4A) or eccen­
tric cam (33) unless wear or damage is obvious. In­
spect the parts, and if replacement is necessary,
proceed as follows.
Remove the snap ring (37) from the drive shaft. Us­
ing a bearing puller, remove the eccentric cam and
key (36) from the drive shaft. Remove the eccentric
cam shim set (34) and washer (38). Tie and tag the
shims or measure and record their thickness for
ease of reassembly.
Slide the drive shaft and gear out of the gear hous­
ing. Slide the spacer washer (5) off the drive shaft.
Remove the snap ring (13). Use an arbor (or hy­
draulic) press to remove the gear (11) and key (12)
from the shaft.
To remove the drive shaft bearings (4 and 4A), the
spacer sleeve (2) must be coiled into a smaller di­
ameter to allow passage through the I.D. of the
bearings.
NOTE
After the spacer sleeve in compressed, it will be
permanently damaged and require replacement.
To remove the spacer sleeve, remove the caps­
crew (3) and use a pointed tool to rotated the perfo­
rated steel sleeve until the seam is visible through
the tapped holed. Apply pressure on one side of
the seam until one edge overlaps the other. Reach
though the I.D. of the bearings and continue to coil
the spacer sleeve until is can be removed. Reinstall
the capscrew (3).
Use an arbor (or hydraulic) press to remove the
bearings (4 and 4A) from the gear housing..
It is not necessary to remove the locating pins (17)
from the gear housing unless they are bent or dam­
aged. If replacement is required, press the pins
from the housing.
Gearbox Reassembly And Installation
(Figure 4)
Inspect the shafts (26, 31 and 35) for distortion,
nicks or scratches. Dress small nicks and burrs
with a fine file or emery cloth. Replace the shaft if
defective.
NOTE
Do not heat the needle bearings (4, 4A and 32).
These bearings are designed to be pressed into the
gear housing, not onto the shafts.
To prevent damage during removal from
the shaft (26), it is recommended that the
bearings (25 and 25A) be cleaned and in­
spected
in place . It is strongly recom­
mended that the bearings be replaced any
time the shaft and and bearings are re­
moved.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or
hot plate may be used to heat the bearings. Bear­
ings 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 the bearings
onto the shaft (26), one at a time, until they are fully
seated. This should be done quickly, in one con­
tinuous motion, to prevent the bearings from cool­
ing 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