Gorman-Rupp Pumps 06C1-GA 1005575 and up - Manual (Page 30)

OM−01247 0 SERIES
MAINTENANCE & REPAIR PAGE E − 11
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 bearings to pre-
vent 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 suitable sized sleeve and a press to
reposition the bearings.
If heating the bearings is not practical, use a suit-
able 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.
Lay the gearbox housing on the bed of an arbor (or
hydraulic) press with the pump side down, and
support it so it is level and stable. Lubricate the in-
board drive shaft bearing (29) and slide it into the
gearbox housing bore until fully seated.
Install the woodruff key (16) in the shaft keyway.
Position the helical gear (15) against the inboard
bearing. Slide the drive shaft and assembled out-
board bearing into the gearbox housing. Align the
woodruff key with the gear keyway, and slide the
gear onto the shaft. Press the drive shaft into the
inboard bearing until fully seated. Install the cover
plate and gasket (14 and 17) and secure with the
capscrews (8).
Apply a light coating of oil to the lip of the oil seal
(26), and press it into the bearing cap (23) with the
lip positioned as shown in Figure 1. The face of the
oil seal should be just flush with the outer face of
the bearing cap.
Install the bearing cap gasket (18), and slide the
bearing cap over the shaft, being careful not to
damage or roll the oil seal lip. Secure the bearing
cap with the nuts (20).
Position the bearing housing on a flat surface with
the pump side up, and support it so it is level and
stable.
Slide the pinion shaft into the gearbox housing until
the gear teeth mesh with those of the helical gear,
and the outboard bearing (30) seats squarely
against the bearing bore.
Reinstall the pipe plug (28) in the gearbox housing.
Refer to PUMP AND SEAL REASSEMBLY and in-
stall the remaining pump components.
NOTE
Pinion shaft endplay should be between .005
to.012 (0,127 to 0,305 mm). Add or remove bearing
shims (35) to achieve the correct endplay.
After the pump components are installed, lubricate
the gearbox as indicated in LUBRICATION.
LUBRICATION
Seal Assembly
The seal assembly is lubricated by the medium be-
ing pumped and no additional lubrication is re-
quired.
Gearbox
The gearbox was fully lubricated when shipped
from the factory. Check the oil level regularly at the
oil fill pipe plug (53). When lubrication is required,
remove the air vent (13) and add SAE No. 90 non-
detergent gear oil. Fill the gearbox until the oil level
reaches the bottom of the fill plug hole. Clean and
reinstall the fill plug. Do not over lubricate. Over-lu-
brication can cause the bearings to over-heat, re-
sulting in premature bearing failure.