Cattini YAK 215/N Manual Uso Y Mantenimiento página 17

EN
THE JACK LIFTS, BUT COMES DOWN UNDER THE LOAD.
- Dismantle the assembly
After carefully cleaning, readapt the pin
falls even after fitting the jack, carry out the following step. - There is dirt underneath the valves: remove the casing,
close the tap POS.9 GRP1SOL POS.9 GRP1SOL
cap POS.16 GRP1GMP POS.16 GRP1GMP , remove the bearings and springs and blow inside to thoroughly clean it. Reassemble and if
necessary knock again the bearings
the previous page. Put the jack back into its normal position and reopen the tap.
- Completely drain the tank and the cylinder of oil, loosen the cylinder and check the washer
damaged, replace it. Refit everything being careful not to let the replaced seal fall between cylinder and base. Fill the
oil tank with oil to the required level; operate the jack a couple of times without the load; bleed and then top up the oil
level when the pistons are lowered.
THE RAMS FAIL TO GO BACK IN COMPLETELY EVEN WITH THE CONTROLS IN DESCENT
POSITION.
Check the suction-pump
- Check the head, POS. 19 GRP1GMP POS. 19 GRP1GMP
OIL LEAKS FROM THE SILENCER
- Check that the pumping element pos. 11 of the GRP1GMP exploded drawing is not scored or damaged. If it is,
replace it.
- Check that the seals,
OIL LEAKS FROM THE SUCTION PUMP
1. Check the quantity of oil in the tank, (see the "Oil level check" procedure in the "Maintenance for the end user"
section). If too much oil has been put in the jack, it will stop leaking very soon.
2. Check that the jack has been used observing the conditions listed previously, i.e. horizontally and not slanted. If the
jack has been turned upside down or tipped over, it will stop leaking very soon.
THE PISTONS ARE VERY SLOW TO MOVE UP
- Check that the tap, POS. 9 GRP1SOL POS. 9 GRP1SOL
- If the jack malfunctions when moving up, check the spring
POS.2 GRP1SOL POS.2 GRP1SOL and check that under the bearing
POS.7 GRP1GBL POS.7 GRP1GBL
, turn the jack over so the cylinder is horizontal and the motor pump vertical, loosen the
POS.12 AND POS.14 GRP1GMP POS.12 AND POS.14 GRP1GMP
POS. 22 GRP1GMP POS. 22 GRP1GMP : remove it and clean it thoroughly.
, remove it and clean it thoroughly.
POS. 3 GRP1GMP POS. 3 GRP1GMP
POS. 5,6,9 GRP1GMP POS. 5,6,9 GRP1GMP are not worn. If they are, replace them.
, located between the tank and motor pump is open.
POS.7 GRP1GBL POS.7 GRP1GBL
in its seat with a light blow with a hammer. If the load still
, then repeat the bleeding operation illustrated on
POS. 22 GRP1GMP POS. 22 GRP1GMP
POS. 17 GRP1GMP POS. 17 GRP1GMP
there are no impurities.
POS.10 GRP1GCI POS.10 GRP1GCI
.
. If it is
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