Gorman-Rupp Pumps 06D17-GAR 1009424 and up - Manual (Page 32)

0 SERIES OM−01274
MAINTENANCE & REPAIR PAGE E − 12
inboard drive shaft bearing (28) and slide it into the
gearbox housing bore until fully seated.
Install the woodruff key (17) in the shaft keyway.
Position the helical gear (16) in the gearbox so the
teeth align with those on the pinion shaft and it is
seated against the inboard bearing. Slide the drive
shaft and assembled outboard 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 18) and secure with the capscrews (8).
Apply a light coating of oil to the lip of the oil seal
(24), and press it into the bearing cap (21) 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).
Reinstall the pipe plug (27) in the gearbox housing.
Refer to PUMP AND SEAL REASSEMBLY and in-
stall the remaining pump components.
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 (54). When lubrication is required,
remove the air vent (13) and add SAE No. 90 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-lubrication can
cause the bearings to over-heat, resulting in pre-
mature bearing failure.
NOTE
If the gearbox is rotated out of the standard posi-
tion, the oil fill and drain plugs must be relocated.
The magnetic drain plug (54) must be relocated to
the lowest port, and the oil vent and elbow (12 and
13) must be relocated to the highest port. Consult
the factory for correct positioning of the fill plug to
provide for proper lubrication of the gearbox.
Under normal conditions, drain the gearbox once
each year. Add 2 ounces (59 ml) of Dow Corning
‘Molykote
r
M Gear Guard’, then fill with approxi-
mately 23 ounces (680 ml) of SAE No. 90 gear oil.
Change the oil more frequently if the pump is oper-
ated continuously or installed in an environment
with rapid temperature change.
Monitor the condition of the bearing lubri-
cant regularly for evidence of rust or mois-
ture condensation. This is especially im-
portant in areas where variable hot and
cold temperatures are common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.