Instruction 2111.80B 04/05 15
c. No. 2 power frame with one-piece bearing retainer.
i. Remove the 2 capscrews and washers (37) that are threaded into the power frame (8).
ii. Remove bearing retainer (36) from power frame by tightening jackscrews (3), in equal increments. It
will be necessary to use longer jackscrews than those furnished for impeller adjustment to facilitate
complete removal of the bearing retainer from the power frame.
iii. After the bearing retainer is completely out of the power frame, lift the shaft assembly by the threaded hole
in the motor end of the shaft.
iv. Remove snap ring (35) from bearing retainer._
v. Remove bearing retainer from shaft assembly.
vi. Remove bearing locknut and washer (6) and bearing set (7).
vii. Remove snap ring (10) from shaft and remove bearing (9).
viii. Clean all parts in kerosene and remove all burrs from machined surfaces before reassembling pump.
Keep ball bearings wrapped in clean, lintless cloth at all times when not in pump. When replacing
bearings on shaft, pack clean bearing grease into the bearings with fingers (be sure fingers are free
of dirt and/or grit). DO NOT USE A HAMMER TO REMOVE SHAFT ASSEMBLY.
NOTE: Pumps with the No. 2 power frame having the two-piece bearing retainer can have the motor end
bearing set removed and replaced without dismantling the entire pump by the following procedure:
1. Perform steps 1 through 4 as above.
2. Remove coupling key (1) from shaft.
3. Remove the 2 capscrews and washers (37) that are threaded into the power frame (8).
4. Remove capscrews (86) from bearing retainer (84).
5. Remove bearing retainer from power frame by tightening jackscrews (3), in equal increments. It will be
necessary to use longer jackscrews than those furnished for impeller adjustment to facilitate complete
removal of the bearing retainer from the power frame.
6. Remove bearing locknut and washer (6) from shaft.
7. Replace bearing retainer and capscrews (86).
8. Tighten jackscrews (3), in equal increments, to remove bearing retainer, bearing retainer sleeve (85), and
bearing set (7) as a unit from shaft.
9. Remove capscrews (86) from bearing retainer.
10. Pull bearing set out of bearing retainer sleeve.
11. When reassembling the bearing, it is mandatory that anew grease seal (38) be installed.
C. TO ASSEMBLE PUMP:
To assemble the pump, reverse the disassembly procedure but take the following precautions:
1. Remove the old packing or mechanical seal assembly as applicable. .
2. Carefully place the bearings onto the shaft being certain of proper orientation. Check the diagrams for
assistance.
3. Place water slinger (12) on shaft before assembling packing or mechanical seal housing.
4. Be certain to use impeller key (20).
5. Check all gaskets and grease before using.
6. Before placing sleeve on shaft, clean the shaft with a solvent, and then coat the shaft with Loctite
RC680 or equivalent. Sleeve must be placed on shaft prior to mechanical seal assembly.
7. Assemble each individual mechanical seal part carefully in order not to damage mating seal faces. Press
old floating seat out of seal housing. Oil outer surface of the seat ring using light oil (not grease), and push
the stationary seal face into the cavity of the seal housing, setting it firmly and squarely. Wipe the
lapped seal face of the rotating seat clean, and oil face with clean light oil. If seal housing gasket (27)
needs replacing, put on a new gasket. Place water slinger and seal housing assembly carefully over
shaft, being careful not to strike floating seal with shaft.
Oil the surface of the shaft using light oil, not grease. Wipe the face of the sealing face clean and oil
with clean light oil. After placing seal housing (40) onto the shaft, put the sealing face and bellows assembly,
less the spring, on the shaft. Be certain the seal face is in the proper position with the carbon sealing face
toward the motor end. The notches on the edge of the sealing face should mate with the lugs on the
retainer. Use a sleeve of proper diameter to slide assembly back as far as it will go. Until slinger and seal
housing are back against the power frame. When sliding seal assembly onto shaft, be certain to press
only tail sections of bellows and driving band. A smooth sleeve of about 1/32" longer than the shaft sleeve
diameter with a wall thickness of about 1/8" is suitable. Place seal spring over shaft and set it properly
over the bellows assembly.
8. Assemble seal housing to backplate.
9. Use a non-hardening gasketing compound, Permatex #2 Form-a-gasket or equal (21) prior to
To Next Page
Loading...
