Gorman-Rupp Pumps VG8D3-B 1221466 and up - Manual (Page 25)

OM-02819 VG SERIES
MAINTENANCE & REPAIR PAGE E - 5
under the bellows. Slide the rotating element, re­
tainer and bellows, spring, and spring holder off
the sleeve.
NOTE
It is not necessary to remove the seal collar (8) un­
less the collar or sleeve requires replacement. DO
NOT remove the collar until the exact location has
been recorded either by scribing or measurement.
The location of the collar is critical to pump opera­
tion since it establishes the working length of the
seal. After the dimension has been recorded, or the
location scribed, loosen the setscrews (7) and
slide the collar off the sleeve.
If no further disassembly is required, see Seal In­
stallation.
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main­
tained, the bearing housing should not require dis­
assembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly‐
equipped shop by qualified personnel.
Separate the power source from the shaft (32) and
remove the deflector (43) and key (31).
Remove the hardware securing the foot (35) to the
base, and move the bearing housing to a clean,
well‐equipped shop for disassembly.
Remove the drain plug (39) and drain the bearing
housing. Clean and reinstall the drain plug.
Disengage the hardware (18 and 29) and remove
the inboard and outboard bearing covers (19 and
30) and gaskets (27 and 41). Inspect the oil seals
(28 and 42) and, if replacement is required, use a
screwdriver or other suitable tool to pry them from
the bearing covers.
Place a block of wood against the drive end of the
shaft and tap the shaft and assembled bearings
(26 and 40) out of the bearing housing.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear­
ings are removed.
Clean the bearing housing, shaft and all compo­
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.
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 bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
Bearings must be kept free of all dirt and
foreign material. Failure to do so will great­
ly shorten bearing life. Do not spin dry
bearings. This may scratch the balls or
races and cause premature bearing fail­
ure.
Rotate the bearings by hand to check for rough­
ness or binding and inspect the bearing balls. If ro­
tation is rough or the bearing balls are discolored,
replace the bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the bearing