DALBO MINIMAX 830 2008, Manual

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Replacing gaskets on raise/lower cylinder
Fig. 19
1.
Drain oil from cylinder by moving ram carefully backwards and forwards.
2. Extend ram to centre position. Unscrew upper part (pos. 3) from cylinder tube
(pos. 1). Use special tool to remove upper part. If upper part is stuck, heat front
of sleeve. When upper part is detached from cylinder tube, pull ram up towards
upper part and remove completely from cylinder tube (pos. 1).
3. Remove lock nut (pos. 10) retaining collar shoe (pos. 4).
4. Extract collar shoe pos. 4) from ram, (pos. 2).
5. Extract upper part (pos. 3) from ram, (pos. 2).
6. Remove gaskets in upper part (pos. 5+6+7+8+9) along with collar shoe.
7. Clean all parts and check for particles etc. Check for rust around scraper ring
(pos. 5) in upper part. If detected, remove thoroughly.
Mounting
1.
Fit new gaskets (pos. 5+6+7+8+9) in upper part, plus collar shoe.
2. Lubricate thread in upper part (pos. 3) and cylinder tube (pos. 1) with oil.
3. Fit upper part (pos. 3) on ram shaft.
4. Fit collar shoe (pos. 4) and screw on lock nut, secure with Loctite. Ensure that
thread is absolutely clean and free of oil or other impurities before applying
Loctite. Do not fill with oil for 12 hours after use of Loctite.
5. Lubricate outer collar shoe gasket in contact with cylinder tube and inside of
cylinder tube with oil, push ram into centre position.
6. Fit upper part onto cylinder tube and tighten.
7. For fitting cylinder see ” Replacing raise/lower cylinder ”.