Hale RSD - Manual (Page 93)

93 Mechanical Seal Replacement
March 2006, Rev-A
M e ch an ica l Sea l
❑
WARNING ! - continued
ENSURE THAT THE PUMP BODY AND IMPELLER BORES AND ALL MATING
SURFACES OF THE MECHANICAL SEAL ASSEMBLY ARE ABSOLUTELY CLEAN
THROUGHOUT THE ENTIRE INSTALLATION PROCESS.
3. Apply a generous coating of Pac-Ease Rubber Lubricant Emulsion to the
O-ring on the seal head assembly and the pump shaft and seal areas.
4. Without touching the carbon seal, slide the stationary seat into the pump
head. (See Figure 6a-1: “Mechanical Seal Overview / Replacement” on
page 91.)
5. Carefully push the stationary seat into the pump head bore using a soft,
clean pusher tube. Verify the stationary seat is firmly seated in the pump
head.
6. Clean the pump shaft with alcohol swabs.
7. Apply a generous coating of PAC-EASE Rubber Lubricant Emulsion to the
seal diaphragm. (See Figure 6a-1: “Mechanical Seal Overview / Replace-
ment” on page 91.)
8. Without touching the face of the seal ring, push the ring, diaphragm, and
retainer onto the shaft with the pusher tube.
9. Keep the shaft well lubricated and verify the seal ring seats against the sta-
tionary seat. If binding occurs, apply additional PAC-EASE lubricant.
10. Slide the spring (supplied with the seal) onto the shaft. The spring must
seat on the seal retainer.
11. Install the impeller shaft key and carefully slide the impeller over the pump
shaft, aligning the keyway with the impeller key. Also see CAUTION !
beginning on pape 91.
❑ Torque the impeller nut to 210 ft.-lbs. (285 N-m).
❑ Continue tightening the impeller nut until the cotter pin can be installed to
lock the nut in place.
❑ Install cotter pin and bend over the ends.