Tuthill 6000, Installation And Service Instructions Manual

Page: 26 / 36

Service Manual # 67
Page 26 of 36
d. After magnet bearing housing sub-assembly has been lowered into place, remove guide
studs and jack screw.
20. Secure bearing housing sub-assembly into place with screws.
21. Proceed to couple completely assembled unit to drive.
Section 20: Pump Assembly Procedure - 6310, 7210 & 8210 Pumps
Refer to Figure 8.
1. Clean all parts thoroughly.
2. Install rotor in bracket.
3. Assemble housing & gasket to bracket with bracket screws.
4. Assemble idler, cover & gasket to housing with housing screws.
5. Install the adjusting ring, but do not tighten the set screws yet.
6. Set End Clearance.
a. The positioning of the adjusting ring is used to set and maintain proper internal
clearances. These clearances depend on the size of the pump and are shown in Table
8. Note: Some Tuthill pumps are provided with non-standard clearances for use with
high-viscosity or high-temperature fluids. Consult the factory for clearances of these
pumps.
b. Obtain a feeler gage with a thickness equal to the desired end clearance.
c. Insert the feeler gage through the ports, between the idler and the rotor.
d. Push the rotor towards the cover, and tighten the thrust bearing set screws.
e. Remove the feeler gage, and rotate the shaft to ensure smooth operation before
proceeding.
7. Place pump on flat surface with the shaft facing upward. Check condition of o-ring in the groove
on the bracket. Install new o-ring if required.
8. If equipped, place retaining ring into lower retaining ring groove on shaft.
9. Place key into shaft keyway.
10. Lower inner magnet onto shaft until it bottoms onto retaining ring or shaft shoulder. Place
retaining ring into retaining ring groove on shaft
11. Place canister over inner magnet until the face of the canister flange bottoms onto the bracket.
To insure easy assembly of canister over o-ring, place a small amount of lubricating oil on
canister I.D. before assembly.