Becis

I just checked again my model. Do you mean guys by the "pistons" clutch the grey cylinder with three gears? Because here these three gears skipping the teeth at the end

ok I understood, I was worried about this sound. Thank you a lot for help guys!

Thank you for quick reply. But Why this is not happening also with outrigers ? I thought that it should work the same way

Hello guys, After six years without Lego I decided to buy lego again and I choosed the biggest Lego technic set 42043. It is absolutely amazing, but unfortunately I stucked on the building of the gearbox from package 2. What I did is that I builded front part of the truck from package 1, then I builded gearbox from package 2 and connected it to the part front part. Then I builded rear part from package 3 and connected it to the part 1 with gearbox. Then I decided to test the functions: 1) Outrigers working fine > when they reach the end clutch start working and motor is still running 2) Crane > did not test it it is not mounted 3) Pump > working fine 4) the "piston" on the rear end. Here is the issue, when this reach the end of the travel clutch doesnt start to work and gears are cracking. What I did is that I completely rebuild the gearbox and it is still the same issue, do you have any idea when can be the problem? Best, Becis