Page 24
Instruction ManualToftejorg TZ-66
Standard machines and machines delivered with ATEX certification
in accordance with Directive 94/9/EC
IM-TE91A300-EN9
Maintenance and Repair
(continued)
Hub Subassembly
Disassembly
1.
Remove Nozzles (pos. 22). Nozzles are untightened with a wrench on the faces of the nozzles.
2.
Remove Screws (pos. 17) and Spring washers (pos. 16) from Hub cover (pos. 21).
3.
Draw out Hub (pos. 23) together with Hub cover (pos. 21). Ball race (pos. 21.1), Ball retainer with
balls (pos. 27) and Bevel gear (pos. 20). If Hub cover (pos. 21) clings into Body, knock carefully
with plastic hammer on outer diameter to loosen.
If Ball races in Hub cover (pos. 20.1) and in Bevel gear (pos. 21.1) are extremely worn, they should be
replaced as well as the Ball retainer with balls (pos. 27). How to replace Ball races see page 32.
If blue liners on Stem are extremely worn, they can be replaced. This part requires that a precise
procedure is followed to accomplish installation. It is highly recommended that an authorized Alfa Laval
Tank Equipment Service Center perform the replacement when necessary.
Reassembly
1.
Slide on Hub (pos. 23).
2.
Mount Bevel gear with race (pos. 20), Ball retainer with balls (pos. 27) and Hub cover (pos. 21)
and set with Spring washers (pos. 16) and Screw (pos. 17).
3.
Screw on Nozzles (pos. 22) and tighten with wrench. If desired, secure with liquid threadlocker
Loctite No. 243 or equivalent, see page 13-14.
