DAL-BO MaxiDisc, Manual

Page: 28 / 38

MaxiDisc
Side 28
Replacing angle adjustment seals
Fig. 20
Cylinder 50/30-150
1
Empty the oil from the cylinder by carefully moving the cylinder back and
forth.
2 Move the piston to the middle position. Unscrew the gland (pos. 3) from
the cylinder casing (pos. 1). (A special tool is needed to remove the
gland). If the gland is stuck, it may help to warm up the very front of the
socket. When the gland has been unscrewed, pull the piston towards the
gland. Pull the piston rod completely out of the cylinder casing (pos. 1).
3 Remove the self-locking nut (pos. 10) holding the sleeve (pos. 4).
4 Pull the sleeve (pos. 4) off the piston rod (pos. 2).
5 Pull the gland (pos. 3) off the piston rod (pos. 2).
6 Remove the seals from the gland and the sleeve (pos. 5+6+7+8+9).
7 Clean all parts thoroughly. Check for filings, shavings, burrs, and make
sure that there is no rust around the scraper ring (pos. 5) in the gland. If
rust is found, it must be removed.
Assembly
1 Assemble the new seals (pos. 5+6+7+8+9) into the gland and the sleeve.
2 Lubricate the screw threads on the gland (pos. 3) and the cylinder casing
(pos. 1) with oil.
3 Mount the gland (pos. 3) onto the piston rod.
4 Mount the sleeve (pos. 4) and screw on the self-locking nut with Loctite .
Make sure that the screw threads are completely clean and free from oil or
other impurities before using Loctite.
Do not refill the oil for the first 12
hours after the application of Loctite.
5 Lubricate the outermost seal of the sleeve that has contact with the cylin-
der casing and the inside of the cylinder casing, then guide the piston rod
into the middle position of the casing.
6 Screw the gland onto the casing and tighten.