Gorman-Rupp Pumps 12B22-B 1059806 thru 1343819 User Manual

Page 26

10 SERIES

OM--00589--03

MAINTENANCE & REPAIR

PAGE E -- 6

Use snap ring pliers to remove the bearing retain-
ing ring (19) from the pedestal bore.

Loosen the setscrews (24) in the bearing retainer
(23). Pry the bearing retainer from the pedestal
bore using two screwdrivers against the head of
the setscrews.

Press the oil seal (22) from the bearing retainer,
and remove the bearing retainer O-ring (18). Re-
move the bearing shim set (17); tie and tag the
shims or measure and record their thickness for
ease of reassembly.

Place a block of wood against the impeller end of
the shaft and tap the shaft and assembled bear-
ings (13 and 15) from the pedestal.

Be careful not

to damage the shaft.

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 pedestal, shaft and all component parts
(except the bearings) with a soft cloth soaked in
cleaning solvent. Inspect the parts for wear or dam-
age 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.

Inspect the shaft for distortion, nicks or scratches

or for thread damage on the impeller end. Dress
small nicks and burrs with a fine file or emery cloth.
Replace the shaft if defective.

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 pedestal.
Replace the bearings, shaft, or pedestal if the
proper bearing fit is not achieved.

If bearing replacement is required, use a bearing
puller or arbor press (or hydraulic) to remove the
bearings from the shaft.

Press the inboard oil seal (29) from the pedestal
bore.

Shaft and Bearing Reassembly and Installa-

tion

Clean and inspect the bearings as indicated in
Shaft and Bearing Removal and Disassembly.