Air Bleeding; Maintenance Reserved To A Professionally Qualified Engineer - Cattini YAK 215/N Manual Uso Y Mantenimiento

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.
3. Turn the jack over on to one side, leaving free access to the dowel no.
DWG. 16
4. Loosen (NEVER unscrew the dowel completely!) the dowel no.
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 GRP1SOL POS. 9 GRP1SOL
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,
KMYAK215/N) and lubricate both the cylinder and the ram.
THE JACK DOES NOT LIFT THE LOAD.
-Check that the tap POS. 9 GRP1SOL POS. 9 GRP1SOL
- Check the oil level by means of the screw
- There is dirt underneath the valves: remove the casing, close the tap
cylinder is horizontal and the motor pump vertical, loosen the cap
springs and blow inside to thoroughly clean it. Reassemble and if necessary knock again the bearings
POS.14 GRP1GMP POS.14 GRP1GMP , 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
exploded drawing which controls opening and closing of the descent valve pos.7 of the GRP1GBL exploded drawing,
has not become rigid, in which case dismantle and grease it.
16
POS. 9 GRP1SOL POS. 9 GRP1SOL
.
POS. 10 GRP1GMP EXPLODED DRAWING POS. 10 GRP1GMP EXPLODED DRAWING
is open.
POS. 24 GRP1GCI POS. 24 GRP1GCI
POS.2 GRP1SOL POS.2 GRP1SOL , paying special attention that the piston pos.4 of the GRP1GBL
.
POS. 17 GRP1GCI POS. 17 GRP1GCI
POS. 17 GRP1GCI POS. 17 GRP1GCI and move the pistons back in by
are worn. Replace them (kit
on the tank.
POS.9 GRP1SOL POS.9 GRP1SOL
, remove the bearings and
POS.16 GRP1GMP POS.16 GRP1GMP
on the side of the base.
, turn the jack over so the
POS.12 AND POS.12 AND
EN