Gorman-Rupp Pumps 06D17-GAR 1009424 and up - Manual (Page 31)

OM−01274 0 SERIES
MAINTENANCE & REPAIR PAGE E − 11
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thor-
oughly filtered.
Position the intermediate (31) over the shaft (46)
before installing the inboard pinion shaft bearing
(35) as described below.
NOTE
The outboard pinion shaft bearing (35) may be
manufactured with a ball loading groove. Check the
bearing for a loading groove and its conainer for the
name of the manufacturer. When installed on the
shaft, the loading groove (if equipped) must face
the direction shown in Figure 5.
INSTALLATION OF FEDERAL MOGAL 5300W
OR NTN 3300 SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
INSTALLATION OF MRC/SKF 5300M, 5300E OR
TIMKEN 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
LOADING
DIRECTION OF
THRUST
BALL LOADING
GROOVE POSITIONED
AWAY FROM IMPELLER
GROOVE
DIRECTION OF
THRUST
LOADING
BALL LOADING
GROOVE POSITIONED
TOWARD IMPELLER
GROOVE
Figure 5. Bearing Positioning
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.
Position the gearbox housing on a flat surface with
the pump side up and support it so it is level and
stable. Install the gasket (34) and slide the as-
sembled pinion shaft, intermediate and bearings
into the gearbox housing until the gear teeth mesh
with those of the helical gear. Slide the intermediate
into the gearbox housing until fully seated.
Continue to slide the pinion shaft and bearing into
the gearbox until the inboard bearing (25) is fully
seated.
NOTE
Pinion shaft endplay should be between .005 and
.012 inch (0,127 to 0,305 mm). Install the same
thickness of bearing shims (36) as previously re-
moved, then reinstall the pump casing (1) as de-
scribed in PUMP AND SEAL REASSEMBLY. Add or
remove bearing shims to achieve the correct
endplay.
Position the gearbox housing on the bed of an ar-
bor (or hydraulic) press with the pump side down,
and support it so it is level and stable. Lubricate the