Gorman-Rupp Pumps 14D2-12LD477 S/G 1348079 and up User Manual

Page 30

10 SERIES

OM−05967

MAINTENANCE & REPAIR

PAGE E − 12

STUB

SHAFT

SEAL

LINER

IMPELLER

SHIMS

SPACER
SLEEVE

PACKING RINGS

WASHER

STATIONARY

ROTATING
ELEMENTS

STATIONARY

SPRING

SEAL SEATS

INTERMEDIATE

ННН

НН

WASHER

НН

STATIONARY

Figure 5. GS1000C Seal Assembly

This seal is not designed for operation at
temperatures above 110

_F (43_C). Do not

use at higher operating temperatures.

Position the inboard rotating element on the shaft
with the chamfered side toward the shaft shoul-
der and slide it on until fully seated.

Subassemble the inboard stationary seat, packing
ring and stationary washer. Press this unit into the
lubricated seal liner until the seal faces contact. A
push tube cut from a length of plastic pipe would
aid this installation. The I.D. of the tube should be
approximately the same size as the I.D. of the seal
spring.

Install the spacer sleeve and seal spring.

Subassemble the outboard stationary seat, pack-
ing ring and stationary washer. Press this unit into
the lubricated seal liner. Install the outboard rotat-
ing element with the chamfered side toward the
impeller.

After the impeller and grease cup have been in-
stalled, lubricate the seal as indicated in LUBRI-
CATION at the end of this section.

Impeller Installation And Adjustment

(Figure 3)

Inspect the impeller, and replace it if cracked or
badly worn. Install the same thickness of impeller
shims (23) as previously removed, and screw the
impeller onto the shaft until tight.

A clearance of .020 to .040 inch (0,51 to 1,02 mm)
between the impeller and the intermediate is nec-
essary for maximum pump efficiency. Measure this
clearance and add or remove impeller shims until
this clearance is reached.