Gorman-Rupp Pumps 610M20B-B 699260 and up - Manual (Page 26)

60 SERIES OM−01912
MAINTENANCE & REPAIR PAGE E − 8
Press the outboard oil seal (28) into the bearing
cap (25) with the lip positioned as shown in Figure
1. Install the bearing cap gasket (33) and shims
(31). Secure the bearing cap to the pedestal with
the hardware (26 and 27). Use caution not to cut or
roll the lip of the oil seal during installation.
NOTE
Shaft endplay should be between .002 and .010
inch (0,05 and 0,25 mm). Add or subtract shims to
establish the correct endplay.
Install the slinger ring (19) on the impeller shaft.
Use a suitable hoist and sling to position the ped-
estal assembly on the base. Secure the pedestal to
the base using the previously removed hardware.
Lubricate the pedestal as indicated in LUBRICA-
TION.
Seal Reassembly and Installation
(Figures 1 and 3)
Clean the bore of the seal plate (35) and shaft (25)
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.
Lay the seal plate on a flat surface with the impeller
side down. Press the oil seal (33) into the seal plate
with the lip positioned as shown in Figure 1.
Since the mechanical seal is the primary seal in the
pump, special consideration should be given to
ensure proper installation.
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. If any components are worn, replace the com-
plete 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 stationary seat O-rings 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 follows, (see Figure 3).