Hi uplift 1st of all how old is the machine? yes the pot is on the A5 card
The directional valves operates in pairs Y34/Y41 at fork lift/lowering and Y69/Y70 at cabin lift/lowering.
The valves are soft opening which means that the valve piston opens and reduces the oil flow gradually to obtain the smooth start/stop iv had it where the valve has been sticking and also if the chain has not been set properly. or due to lack of adjustment the chains need to be adjusted at regular intervals due to stretch and wear and adjusting should be performed in two stages to obtain the correct fork height above the floor the lifting dampers after adjustment should only be slightly compressed and the measurement should be 80/85mm between floor and forks.