Maintenance Reserved To A Professionally Qualified Engineer - Cattini YAK 217/P Manual Uso Y Mantenimiento

3. Operate the raising control again for 2 seconds until the pistons lock in place
4. Make sure the pistons are now locked in place and cannot be rotated
5. Operate the lowering control until the pistons begin to come down
6. Ensure that the pistons can be rotated now. Remove the cover and close the cock
7. Turn the jack upside down, allowing the pistons and frame handle to rest on the workbench, as illustrated in
drawing DWG. 14
8. Loosen (NEVER unscrew it completely!) the grub screw
allow all the air out, until hydraulic fluid starts flowing out. When finished, tighten the grub screw
9. Position the jack back on the base and open the cock
10. Operate the lowering control to get the pistons to fully retract.
11. Check the hydraulic fluid level
12. Try to operate the jack without any load. If the pistons do not lower smoothly, repeat the bleeding 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,
KMYAK217/P) and lubricate both the cylinder and the ram.
THE JACK DOES NOT LIFT THE LOAD.
-Check that the tap POS. 9 A00544 POS. 9 A00544
- 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
and blow inside to thoroughly clean it. Reassemble and if necessary knock again the bearings
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
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.
THE JACK LIFTS, BUT COMES DOWN UNDER THE LOAD.
- Dismantle the assembly
After carefully cleaning, readapt the pin
16
POS. 10 A00423 EXPLODED DRAWING POS. 10 A00423 EXPLODED DRAWING
is open.
POS. 24 A00347 POS. 24 A00347
POS. 2 A00544 POS. 2 A00544 , paying special attention that the piston pos.4 of the A00324 exploded
POS. 2 A00544 POS. 2 A00544 and check that under the bearing
POS.7 A00324 POS.7 A00324
POS. 17 A00347 POS. 17 A00347
POS. 9 A00544 POS. 9 A00544
are worn. Replace them (kit
on the tank.
POS. 9 A00544 POS. 9 A00544
POS.16 A00423 POS.16 A00423
POS.7 A00324 POS.7 A00324
in its seat with a light blow with a hammer. If the load still falls
POS. 9 A00544 POS. 9 A00544
and push the pistons manually to
POS. 17 A00347 POS. 17 A00347
, turn the jack over so the
, remove the bearings and springs
POS.12 AND POS.14 POS.12 AND POS.14
there are no impurities.
EN