Dynapac CA 301 - Page 22

22 CA 251/301 M251EN2
1. Loosen the venting filter to release any over-pressu-
re in the reservoir.
2. Remove the hydraulic filters (1), (2) and (3) and
discard them. They are of the disposable type and
cannot be cleaned and reused.
Ensure that the previous sealing rings are
removed. Leakage will otherwise occur be-
tween the old and new sealing rings.
3. Thoroughly clean the sealing surfaces of the filter
holders.
4. Apply a thin coat of fresh hydraulic fluid to the
sealing rings of the new filters.
5. Screw on the filters firmly by hand.
Screw on until the seal makes contact with the
seating and then screw half a turn further. Do
not tighten too hard, the seal may otherwise
be damaged.
6. Start the engine and check for any leakage from the
filters.
Ensure that ventilation (evacuation) is
adequate if the engine is run indoors.
(Risk of carbon monoxide poisoning).
7. Check fluid level in the sight glass (4) and top off as
required.
2
3
1
4
Fig. 35 Hydraulic reservoir
1. Suction filter, drive
2. Suction filter, vibr.
3. Return filter, cooling system
4. Level glass
Hydraulic fluid filter
- changing
CAUTION
CAUTION
WARNING
EVERY 500 HOURS OF OPERATION (Every three months)