Gorman-Rupp Pumps VG5C3-B 1188885 and up User Manual

Page 29

OM-02816

VG SERIES

MAINTENANCE & REPAIR

PAGE E - 8

SPRING CENTERING

WASHER

SPRING

STATIONARY

ELEMENT

SEAL CAP

ROTATING

ELEMENT

RETAINER

SEAL

COLLAR

O‐RING

BELLOWS

IMPELLER SHAFT

SHAFT SLEEVE

SEAL PLATE

SETSCREW

O‐RING

Figure 2. 25271-095 Seal Assembly

This seal is not designed for operation at
temperatures above 160

F (71

C). Do not

use at higher operating temperatures.

Locate the collar (8) on the shaft sleeve at the
scribed mark or dimension taken before disassem
bly, and secure with the setscrews (7).

NOTE

If the dimension is not known, slide the sleeve onto
the shaft until fully seated, and scribe the seal work
ing length on the shaft (dimension “A” shown in Fig
ure 2). The designed working length (from the sta
tionary seal face to the collar) for this seal is 2-3/8
inches (60,2 mm). Secure the collar on the sleeve at
this point with the setscrews.

Position the seal plate on a flat surface with the im
peller side down. Position the sleeve in the seal
plate bore with the chamfered end facing up.

Slide the spring holder and spring over the sleeve
and against the collar. Assemble the drive grooves
of rotating element into the drive lugs of the bellows
retainer, and slide this rotating portion of the seal
over the sleeve until the retainer seats in the spring.

Use thumb pressure to press the stationary seat
and O‐ring into the seal cap (46) until fully seated.
Slide the assembled stationary seat, seal cap and
gasket over the shaft sleeve until the seal faces
contact and secure the seal cap and gasket (11) to
the seal plate (6) with the nuts (44).

Install the sleeve O‐ring (9) completely against the
shaft shoulder. Be careful not to cut it on the impel
ler keyway.

Slide the seal plate, shaft sleeve and seal assembly
onto the shaft. Secure the seal plate to the bearing
housing with the nuts (15).

Impeller Installation

Inspect the impeller, and replace it if cracked or
badly worn. Install the impeller key (49) and slide
the impeller onto the shaft and against the sleeve