Maintenance Operations To Be Performed Only By Aqualified Technician - Cattini Oleopneumatica YAK 300 Manual Uso Y Mantenimiento

EN
BLEEDING THE AIR
Each time the jack is serviced, with parts connected to the tank and motor pump removed and refitted, it is advisable to
bleed off all air.
Bleeding phases:
1. Let the pistons come out fully, without pressurising the jack
2. Close the cock 5 - A00563 5 - A00563
3. Turn the jack over onto the side which leaves access to the grub screw
4. Loosen (NEVER unscrew it completely!) the grub screw
5. Let all the air out through the grub screw and continue until oil starts coming through, then close the grub screw.
6. Return the jack to its working position.
7. Open the cock 9 - GRP1SOL 9 - GRP1SOL
8. Push the pistons all the way back in and check the fluid 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 OPERATIONS TO BE PERFORMED ONLY BY A
QUALIFIED TECHNICIAN
When maintenance or an overhaul of the jack is required, use only genuine spare parts to ensure the utmost reliability for
the jack.
PROBLEMS
Solutions
THE MOTOR DOES NOT WORK, OR RUNS POORLY
- Check that the air supply line is not blocked or kinked. - The outer gaskets fitted to the piston
worn. Replace them (kit KMYAK300) and lubricate both the cylinder and the piston.
THE JACK DOES NOT LIFT THE LOAD
- Check that the lowering command shaft
- Check that the cock 5 - A00563 5 - A00563
Check the quantity of hydraulic fluid in the tank (see procedure "Checking the hydraulic fluid level" in the
"maintenance operations to be performed by the user" section).
- There is dirt underneath the valves: close the cock
Remove the chassis and the wheels assembly,
by removing the two screws
Then clean the valve seats by removing the cap
A00413 A00413 .
THE JACK LIFTS, BUT COMES DOWN UNDER THE LOAD
- There is dirt underneath the valves: close the cock
Remove the chassis and the wheels assembly,
by removing the two screws
.
.
21 - A00413 21 - A00413
is open.
5 - A00563 5 - A00563
2,13 - YAK300 2,13 - YAK300
4 - A00563 4 - A00563 .
18 - A00413 18 - A00413
5 - A00563 5 - A00563
2,13 - YAK300 2,13 - YAK300
4 - A00563 4 - A00563 .
5 - A00348 5 - A00348
5 - A00348 5 - A00348 and push the pistons back in by hand.
is tight.
and turn the jack over, resting it on the front handle.
and remove the motor pump assembly
and removing the components
and turn the jack over, resting it on the front handle.
and remove the motor pump assembly
on the side on the base. DWG. 13
are
10 - A00413 10 - A00413
2 - A00563 2 - A00563
14,15,16,17 - 14,15,16,17 -
2 - A00563 2 - A00563
15