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6 Maintenance
Impeller may be pressed onto the shaft if a suitable press is available.
4. Lubricate and roll an O-ring (3–914–2) on each casing ring (3–003–9) and slide the
casing rings onto the impeller.
5. Thoroughly clean the stuffing boxes (3–073–9) to prevent dirt from entering the seal
during start-up.
6. Press the stationary seats (3–401–0) of the mechanical seals into both stuffing boxes.
Lightly lubricate the stuffing box bore to ease assembly.
7. Press a new oil seal (3–177–9) into each stuffing box.
Seal lip must point away from the bearing (3–026–4).
8. Lubricate and roll O-ring (3–914–1) into the groove in each stuffing box.
IMPORTANT: Steps 9 through 14 must be completed within 10–12 minutes to assure
proper placements of the mechanical seal.
9. Lightly coat the outboard end of the shaft with soapy water or vegetable oil and slide
the mechanical seal head (3–402–0) onto the shaft.
10.Slide each stuffing box onto the shaft so that the shaft end extends through the
mechanical seal area, but does not enter the oil seal. This will permit installation of the
deflector (3–136–9).
11.Slide the deflector over the shaft end; then push the shaft end through the oil seal and
slide stuffing box fully onto the shaft. DO NOT COMPRESS THE SEAL SPRING AT THIS
TIME.
12.Heat the ball bearing (3–026–4), using either dry heat or a 10 to 15% soluble oil and
water solution.
13.Using gloves, press the heated bearing onto the shaft against the shaft shoulder.
42
G&L Pumps Series A-C 8100 Base Mounted Centrifugal Pump INSTRUCTION MANUAL
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