AVANT A21029, Инструкция по эксплуатации

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2. Check and change of hydraulic oil and saw chain lubrication
- The oil grade is e.g. Mobil Flowrex 46
- The amount of oil is checked from the dip rod in the cap
- The minimum oil quantity is 20 l ( the dip rod must get wet )
- Emptying of the reservoir takes place by disconnecting the suction hose
- Oil change should take place once a year, as a principle
3. Bearing lubrications
Bearings used are sealed for life and they do not need to be lubricated necessarily. By the end of the running
season it is, however, beneficial to add a little lubricant to the bearings. That can extend their service life. If
too much lubricant is forced into the bearing, the seal can be damaged.
4. Service and adjustments of the splitter unit.
(pic. G7)
Adjustment of stroke
Most important thing is, that the cylinder never touches bottom and cause pressure peaks which begins to
heat up the oil. Consequently pump and the gearbox would be damaged, if that happened. To avoid the
bottom stroke, position the pusher to stop 5 mm before the end in the inner position.
Adjustment of the triggering counter plates of the valve
(pic. G7B)
Loosen two hex nuts (G7C) and move counterplate a little at the time. Find the place, where bottom is
touched and move counterplate so, that cylinder stops 10mm before. Make a few test runs.
1. Left counterplate adjusts, how long strike is.
2. Right counterplate adjusts, how deep the pusher is pulled back.
3. Stroke is correct when the pusher end plate is on the same level with the pullback plate. (G8)
5. Adjustment of the splitter valve
Adjustment screws (1G7D) are the joint swing limiters. Adjustment screw settings take place as follows:
1. The joint sleeve linkage (G7A) is released to its end position.
2. The adjustment screw (G7A) is turned out until the tip of the screw does not reach the joint sleeve any
more.
3. The screw is turned in until the screw tip pushes the joint sleeve 2 mm forward.
4. The bolt locking nut (G7E) is tightened.
5. Same actions are repeated on the other side.
6. Screws for the joint sleeve must be tightened.
Now the limiters are set correctly and they will stop the joints at turns, and thus the internal linkage of the
valve will be spared from the shocks caused by turns.
The valve neutral position is adjusted by the adjustment screw (G7F). When turning the adjustment screw
out, the pusher moves backwards. When the screw is turned in, the pusher moves forwards. Adjust the screw
out or in until the pusher, when stopped in the middle of its operating phase, does not move in either
direction. Grease should be brushed on the shaft pin when necessary.