Gorman-Rupp Pumps 62 1/2D1-CH23 S/G 1211015 and up - Manual (Page 25)

60 SERIES OM--05171
MAINTENANCE & REPAIR PAGE E -- 8
Inspect the wear ring (12) for excessive wear or
damage. The wear ring is secured in the pump cas-
ing by a press fit. If replacement is required, use a
small bit to drill two holes horizontally through the
ring, 180_ apart. Use a chisel or other suitable tool
to complete the cuts through the ring and remove
the ring from the casing.
Be careful not to damage
the casing bore when removing the ring.
To remove the impeller, insert a steel bar or drift pin
between the vanes, and turn the impeller in a
counter-clockwise direction (when facing the im-
peller) while holding the engine crankshaft station-
ary.
Be careful not to damage the impeller vanes.
Use caution when unscrewing the impeller; ten-
sion on the seal spring will be released as the im-
peller is removed.
Inspect the balance ring (9) for excessive wear or
damage. The balance ring is secured in the inter-
mediate by a press fit. If replacement is required,
use a small bit to drill two holes horizontally
through the ring, 180_ apart. Use a chisel or other
suitable tool to complete the cuts through the ring
and remove the ring from the intermediate.
Be
careful not to damage the intermediate bore when
removing the ring.
Seal Removal and Disassembly
(Figure 2 And 4)
Remove the spring holder (18) and the impeller ad-
justing shims (7). Tie and tag the shims or measure
and record their thickness for ease of reassembly.
Remove the seal spring, then slide the shaft sleeve
and rotating portion of the seal off the engine shaft
as a unit. Apply oil to the sleeve and work it up un-
der the bellows. Slide the rotating portion of the
seal off the sleeve. Use two stiff wires with hooked
ends to pull the stationary seat from the intermedi-
ate bore.
NOTE
An alternate method of removing the stationary seat
is to remove the hardware (26 and 27, Figure 1) and
separate the intermediate from the engine. Use a
dowel to press the stationary seat from the inter-
mediate.
If no further disassembly is required, refer to Seal
Reassembly And Installation.
Seal Reassembly and Installation
(Figure 2 And 4)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven-
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain-
ers.
The seal is not normally reused because wear pat-
terns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emer-
gency,
carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate precision
finished faces; even fingerprints on the faces can
shorten seal life. If necessary, clean the faces with a
non-oil based solvent and a clean, lint-free tissue.
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 shaft sleeve, or replace it
if there are cuts or nicks on either end. If any com-
ponents 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 rotat-
ing element O-ring with water or a very
small
amount of oil, and apply a drop of light lubricating
oil on the finished faces. Assemble the seal as fol-
lows, (see Figure 4).