Gorman-Rupp Pumps 81 1/2P47A-E2 3P 801781 and up - Manual (Page 24)

80 SERIES OM-02164
MAINTENANCE & REPAIR PAGE E - 6
INTERMEDIATE
IMPELLER
SHAFT
ROTATING
ELEMENT
STATIONARY
ELEMENT
IMPELLER
ROTATING
SEAT
RETAINER
IMPELLER
KEY
BELLOWS SPRING
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.
When pressing the stationary seal components
into the intermediate, use hand pressure only. A
push tube cut from a length of plastic pipe will aid in
this installation. The I.D. of the push tube should be
just large enough to slide over the stationary ele­
ment and seat against the shoulder on the seal re­
tainer.
Clean all of the old aviation gasket sealant from the
intermediate bore before attempting to install the
stationary seal components.
If removed at disassembly, slide the intermediate
(11) over the shaft and spacer (10).
The intermediate is offset and not concentric to the
shaft; be sure to position the intermediate against
the motor with the drain holes in the neck of the
mounting flange pointed down. Secure the inter­
mediate to the motor (9) with the hardware 97 and
8). Torque the capscrews (7) alternately to 55 in.
lbs. (6,3 m. kg.).
Apply a small amount of “Loctite 30516 Aviation
Gasket Sealant” or equivalent compound to the
O.D. of the seal retainer and carefully press this as­
sembly into the bore of the intermediate until fully
seated. Clean any residual aviation cement off of
the seal retainer and intermediate.
Apply a drop of water or light oil on the seal face of
the stationary elment; never use grease.
Subassemble the rotating element into the rotating
seat. Apply a small amount of light oil to the O.D. of
the rotating seat and press this assembly into the
impeller until fully seated.
Impeller Installation
Inspect the impeller, and replace it if cracked or
badly worn. Install the same thickness of impeller
shims (14) as previously removed. Install the im­