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Gorman-Rupp Pumps 02K31-X2 3P 597658 and up User Manual

Page 24

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OM-01172

0 SERIES

MAINTENANCE & REPAIR

PAGE E - 6

SEAL PLATE

IMPELLER

SHAFT

STATIONARY

SEAT

ROTATING

ELEMENT

DRIVE BAND

BELLOWS

IMPELLER

SHIMS

IMPELLER

SPRING

RETAINER

STATIONARY

ELEMENT

SPRING

RETAINER

Figure 2. Seal Assembly

This seal is not designed for operation at
temperatures above 160

_F (71_C). Do not

use at higher operating temperatures.

Lay the intermediate (10) on a flat surface with the
impeller side facing up. Subassemble the station­
ary element into the stationary seat and use even
pressure to press this subassembly into the inter­
mediate until it seats squarely against the shoulder
bore.

Carefully slide the assembled intermediate and
stationary portion of the seal over the motor shaft.
Secure the intermediate to the motor with the hard­
ware (12 and 13).

Subassemble the rotating element into the retainer
and bellows. Lubricate the I.D. of the bellows with
water and slide this subassembly onto the shaft
until the polished faces contact. Install the seal
spring and spring retainer.

Impeller Installation

Inspect the impeller and replace it if cracked or
badly worn.

For maximum pump efficiency, the impeller should
be centered within the vane plate scroll.

To verify the impeller positioning, measure the
vane plate and impeller as shown in Figure 3. Use
these measurements to calculate the required im­
peller location (dimension E). Add or remove im­
peller adjusting shims (18) until dimension E is ob­
tained.