Cattini Oleopneumatica YAK 215/N, Operating And Maintenance Manual, Page: 16 / 60

3. Undo the screw, POS. 24 A00337 POS. 24 A00337 (see DWG 15 )
4. If, once this screw has been undone, no oil comes out it means the level is too low. Add oil in this case. The level must
be at the height of the small bolt on the side of the tank, under the casing.
5. If oil does come out, let the excess quantity drain off until the right level is reached (see point 4).
AIR BLEEDING
Each time the jack is serviced, removing and refitting parts connected to the tank and motorpump, it is advisable to bleed
off all air. Bleeding phases:
1. The pistons must be moved out completely.
2. Remove the casing and close the cock no.
POS. 9 A00542 POS. 9 A00542 .
3. Turn the jack over on to one side, leaving free access to the dowel no. POS. 17 A00337 POS. 17 A00337 on the side of the base. DWG.
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4. Loosen ( NEVER unscrew the dowel completely! ) the dowel no. POS. 17 A00337 POS. 17 A00337 and move the pistons back in by
hand.
5. Let all the air out from the dowel and continue until oil starts coming through and then close the dowel.
6. Put the jack back into the working position.
7. Open the cock
POS. 9 A00542 POS. 9 A00542 .
8. Move the pistons back in completely and check oil level.
9. Try to operate the jack without any load and if the piston lowers in jerks repeat the procedure at least 2 or 3 times.
MAINTENANCE RESERVED TO A PROFESSIONALLY QUALIFIED
ENGINEER
Having to carry out maintenance or overhauling, use exclusively genuine spare parts to ensure the utmost reliability for the
jack.
PROBLEMS
Solutions
THE MOTOR WILL NOT START, OR IT RUNS BADLY.
- Check that the air supply line is not choked.
- The outside seals fitted on the piston,
POS. 10 A00423 EXPLODED DRAWING POS. 10 A00423 EXPLODED DRAWING are worn. Replace them (kit
KMYAK215/N) and lubricate both the cylinder and the ram.
THE JACK DOES NOT LIFT THE LOAD.
-Check that the tap POS. 9 A00542 POS. 9 A00542 is open.
- Check the oil level by means of the screw POS. 24 A00337 POS. 24 A00337 on the tank.
- There is dirt underneath the valves: remove the casing, close the tap POS. 9 A00542 POS. 9 A00542 , turn the jack over so the
cylinder is horizontal and the motor pump vertical, loosen the cap POS.16 A00423 POS.16 A00423 , remove the bearings and springs
and blow inside to thoroughly clean it. Reassemble and if necessary knock again the bearings POS.12 AND POS.14 POS.12 AND POS.14
A00423 A00423 , then repeat the bleeding operation illustrated on the previous page. Put the jack back into its normal position
and reopen the tap.
- Check the hydraulic block
POS. 2 A00542 POS. 2 A00542 , paying special attention that the piston pos.4 of the A00324 exploded
drawing which controls opening and closing of the descent valve pos.7 of the A00324 exploded drawing, has not
become rigid, in which case dismantle and grease it.
EN
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