Gorman-Rupp Pumps PA6C60-4045T-ESP 1479001 thru 1302081 - Manual (Page 47)

OM−06341 PA SERIES
MAINTENANCE & REPAIR PAGE E − 25
If the complete coupling assembly is being re-
placed, apply ‘Loctite Retaining Compound No.
242’ or equivalent to the threads of the hardware (6
and 7), and secure the outer ring of the coupling to
the engine flywheel by torquing the hardware to 45
ft. lbs. (540 in. lbs. or 6,2 m. kg.).
Using a suitable lifting device, position the as-
sembled rotating assembly and coupling so the
flexible portion of the coupling seats inside the out-
er ring attached to the engine flywheel.
NOTE
To ease installation, lightly lubricate the rubber por-
tion of the coupling with a non-petroleum based
lubricant such as vegetable oil or glycerin, or a sili-
con-based lubricant such as WD40" or equivalent.
Do not use petroleum-based lubricants, or any oth-
er substance which may soften or otherwise dam-
age the rubber.
Install the intermediate guards (17, Figure 7), and
secure the drive flange (4) to the engine bellhous-
ing with the previously removed hardware (8 and
9).
Seal Reassembly and Installation
(Figures 7 and 12)
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.
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Inspect the stationary
seat bore in the seal plate for dirt, nicks and burrs,
and remove any that exist. The stationary seat bore
must be completely clean before installing the
seal.
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 nicks or cuts 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 O-
rings and bellows 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 12).