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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)
Stem Subassembly
Disassembly
1.
Place machine in upside-down position.
2.
Unscrew Gland (pos. 5). Note: Left-hand thread. Push on Main bush (pos. 6).
3.
Turn machine upside down.
4.
Remove Screws (pos. 10) in Gear wheel (pos. 8). To prevent rotation of Stem (pos. 3) mount two
Screws in two holes opposite one another in BIG end of Stem. Place Stem in a vice held by the
heads of the two Screws.
5.
Draw out Gear wheel with ball race (pos. 8) and Ball retainer with balls (pos. 27).
6.
Push out Stem (pos. 3).
If Ball races in Body (pos. 28.3) and on Gearwheel (pos. 8.1) are extremely worn they should be
replaced together with 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.
Push Stem (pos. 3) into Body. Turn machine upside down.
2.
Place Ball retainer with balls (pos. 27) and Gearwheel (pos. 8) into Body on Ball race. Rotate
gearwheel to check free rotation.
3.
Mount Gearwheel (pos. 8) with Screws (pos. 10) and tighten crosswise. To prevent rotation of
Stem (pos. 3) mount two ¼" screws in two holes opposite one another in BIG end of Stem. Place
Stem in a vice held by the heads of the two screws.
4.
Turn machine to upright position. Remount Main bush (pos. 6) in Gland (pos. 5) and screw into
Stem (pos. 3). Note: Left-hand thread.
