DALBO MAXICUT 920, Manual, Page: 42 / 49

MAXICUT
Page 42
Replacement of the gaskets for hydraulic pull
Fig. 29
1.
The cylinder is emptied of oil by moving the piston carefully back and forth.
2. Move the piston in the middle position, then unscrew the end cap (pos. 3) from the cyl-
inder tube (pos. 1). A special tool must be used to remove the cap. If the cap is stuck, it
may help to warm up the front of the cap. When the cap is unscrewed from the cylinder
tube, pull the piston towards the cap. The piston rod can then be removed from the cylin-
der tube.
3. The locknut that is holding the sleeve (pos. 4) is disassembled.
4. The sleeve (pos. 4) is removed from the piston rod.
5. The cap (pos. 3) is removed from the piston rod.
6. Disassemble the seals and sleeves in the cap (pos. 5+6+7+8+9).
7. All parts are checked for chips, burrs etc. Check for rust around the scraper ring (pos. 5)
in the cap. If this is the case remove it.
Installation
1. New seals (pos. 5+6+7+8+9) are fitted in the cap and the sleeve. Be sure to turn the
sleeves correctly.
2. The thread on the cap (pos. 3) and the cylinder casing must be lubricated with oil.
3. The cap (pos. 3) is installed on the piston rod.
4. The sleeve (pos. 4) is installed and the lock nut is screwed and
secured with Loctite
.
Make sure the thread is absolutely clean and free of oil and other impurities before using
Loctite.
Do not fill the oil within 12 hours of using Loctite.
5. Lubricate the outermost seal on the part of the sleeve in contact with the cylinder tube
and the cylinder tube internally with oil and push the piston into the central position.
6. The cap is installed on the cylinder tube and tightened.