Page 24
Instruction Manual, Gunclean Toftejorg TZ-75 Portable
Standard machines and machines delivered with ATEX certification
in accordance with Directive 94/9/EC
IM-TE91A251-EN3
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 Subassembly. If Hub cover (pos. 21) clings into Body, knock carefully with plastic
hammer on outer diameter to loosen.
4.
Remove Cotter pin (pos. 24). Unscrew contra clockwise Hub conical part (pos. 23) freeing Hub
cover (pos. 21), Ball retainer w. balls (pos. 27) and Bevel gear (pos. 20). To unscrew Hub conical
part (pos. 23), Hub nozzle part (pos. 25) is held in a vice. Caliper (tool no. TE369) is used for the
unscrewing using the two holes in end face of Hub conical part.
Note:
Left-hand thread
If Ball races (pos. 26) in Hub cover and in Bevel gear 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 teflonliner inside Hub is extremely worn, it can be replaced. This part requires that a precise
procedure be followed to accomplish installation. It is suggested that an authorized Alfa Laval Tank
Equipment Service Center perform the replacement when necessary. However, should the customer
insist that they perform the installation, please contact your nearest Service Center for a copy of the
procedure.
Reassembly
1.
Mount Bevel gear (pos. 20), Ball retainer with balls (pos. 27) and Hub cover (pos. 21) on Hub
conical part (pos. 23). Screw on Hub nozzle part (pos. 25). Note: Left-handed thread. To tighten,
place Hub nozzle part in a vice and use Caliper (tool No. TE369). Tighten until holes are aligned to
pass Cotter pin (pos. 24). Insert Cotter pin and split (preferably new cotter pin).
2.
Slide on Hub Subassembly, fit Hub cover (pos. 21) into Body and mount Spring washers (pos. 16)
and Screws (pos. 17).
3.
Screw on Nozzles (pos. 22) and tighten with wrench. If desired secure with Loctite No. 243 or
equivalent.
