6 Maintenance
TZ-67
6.6
Stem Assembly
Disassembly
1. Place machine in upside-down position.
2. Remove Screws (15) in Gear wheel (7). To prevent rotation of Stem (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.
3. Draw out Gear wheel with ball races (7) and Ball retainer with balls (24).
4. Push out Stem (3).
5. If worn, press out Main bush (5).
If Ball races in Body (26.3) and on Gearwheel (7.1) are extremely worn they should be replaced together with Ball retainer with
balls (24). How to replace Ball races see page 31
Reassembly
1. If replaced press Main bush (5) into Stem (3).
2. Push Stem into Body. Turn machine upside-down.
3. Place Ball retainer with balls (24) and Gear wheel (7) into Body on Ball race. Rotate Gearwheel to check free rotation. Mount
Gearwheel with Screws (15) and tighten crosswise. To prevent rotation of Stem (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.
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