Gorman-Rupp Pumps 03J1-B 713013 and up User Manual

Page 30

0 SERIES

OM-01202

MAINTENANCE & REPAIR

PAGE E - 10

B
2

Step 2

Step 1

Step 3

A+

B
2

C+

D
2

Figure 3. Centering Impeller Within Volute Scroll

Install the correct thickness of casing gaskets (5).
Remove the hardware temporarily securing the
seal plate to the pedestal. Secure the casing to the
seal plate and pedestal with the nuts (31). Reinstall
any leveling shims under the casing mounting feet,
and secure the casing to the base with the pre
viously removed hardware.

NOTE

After the pump casing has been installed, check for
free shaft rotation. Correct any scraping binding
before further reassembly.

Final Pump Assembly

Be sure the pump and power source are securely
mounted to the base.

Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.

Be sure the pump, pedestal and power source
have been properly lubricated, see LUBRICA
TION.

Fill the pump casing with clean liquid. Reinstall the
fill plug (49) and tighten it.

Refer to OPERATION, Section C, before putting
the pump back into service.

LUBRICATION

Seal Assembly

The seal assembly is lubricated by the medium be
ing pumped and no additional lubrication is re
quired.

Bearings

The pedestal was fully lubricated when shipped
from the factory. Check the oil level regularly
through the sight gauge (27)

and maintain it at the

middle of the gauge. When lubrication is required,
add SAE No. 30 non‐detergent

oil through the hole

for the air vent (15). Do not over‐lubricate. Over‐lu
brication can cause the bearings to over‐heat, re
sulting in premature bearing failure.

NOTE

The white reflector in the sight gauge must be posi
tioned horizontally to provide proper drainage.

Under normal conditions, drain the bearing hous
ing once each year and refill with clean oil. Change
the oil more frequently if the pump is operated con
tinuously or installed in an environment with rapid
temperature change.

Monitor the condition of the bearing lubri