Gorman-Rupp Pumps 66B3-B 407277 and up - Manual (Page 29)

60 SERIES OM−01459
MAINTENANCE & REPAIR PAGE E − 8
Wipe lightly in a concentric pattern to avoid
scratching the faces.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak-
age. Clean and polish the seal spacer sleeve, or re-
place it if there are nicks or cuts on either end. If any
components are worn, replace the complete seal;
never mix old and new seal parts.
If a replacement seal is being used, remove it from
the container and inspect the precision finished
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the bel-
lows and the outside of the stationary seat with
water or a very small amount of light lubricating oil,
and apply a drop of light lubricating oil on the fin-
ished faces, never use grease. Assemble the seal
as follows (see Figure 3).
PUMP
CASING
SPRING
STATIONARY
SEAT
ROTATING
ELEMENT
SHAFT
SLEEVE
IMPELLER
SHIMS
IMPELLER
RETAINER
IMPELLER
SHAFT
SPRING
HOLDER
IMPELLER
KEY
STATIONARY
ELEMENT
Figure 3. Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
If removed, reinstall the pump casing as described
in Pump Casing and Balance Ring Installation
before continuing to install the seal.
Position the stationary element in the stationary
seat and press this stationary subassembly into
the pump casing until fully seated in the casing
bore.
Slide the rotating portion of the seal (consisting of
the rotating element, retainer and bellows) onto the
lubricated shaft sleeve until the rotating element is
just flush with the chamfered end of the sleeve.
Slide the sleeve and rotating subassembly onto
the shaft until the seal faces contact. Continue to
push the sleeve through the seal until it bottoms
against the shaft shoulder.
Install the seal spring and spring holder (17).
Impeller Installation
Inspect the impeller, and replace it if cracked or
badly worn. Install the same thickness of impeller
shims (16) as previously removed. Install the im-