Gorman-Rupp Pumps VG5C3-B 1188885 and up - 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
A
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