Alfa Laval Toftejorg TZ-79, Инструкция по эксплуатации, Страница: 34 / 48

Maintenance and Repair
(continued)
Replacement of Ball races
In Body
1. A. With big end downwards knock several times Body with bearings (pos. 28) hard against firm
wooden support until Ball race (pos. 28.3) drops out.
1. B. If it is not possible to knock out Ball race in this way, it is necessary first to screw out Main collar
lower (pos. 28.2) - see page 34. Carefully push off old Ball race without damaging Main collar
lower. Use mandrel and firm support.
Before mounting of new Ball race, Main collar lower (pos. 28.2) must be remounted into Body -
see page 34.
2. Clean surfaces and place Ball race (pos. 28.3) on Main collar lower (pos. 28.2). Press by hand as
long as possible. By means of a tube mandrel or if desired wooden block, carefully hammer Ball
race home.
Ball race must not project over endface of Main collar lower. To avoid tilting mandrel must push
along the whole circumference of Ball race. Do not damage surface of Ball race.
On Gear wheel
1. Place Gear wheel with ball race (pos. 8) on support. Support only under Ball race (pos. 8.1). With
mandrel press off old Ball race.
2. Clean surfaces and press on new Ball race. Ball race must be pressed fully home on Gear. Press
parallel. Use press or vice. Do not damage surface of Ball race.
In Hub cover
1. Place Hub cover with ball race (pos. 21) on support. Carefully knock out old Ball race by means of
small mandrel or if desired screwdriver. Knock several times around the circumference to avoid
tilting.
2. Clean surfaces and press in new Ball race. Ball race must be pressed fully home. Press parallel.
Do not damage surface of Ball race.
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