Thank you Francisco, I will check the sensor measuring the exit.

Can I have your personal contact details.

Olá Jacob, já tive problema com a kalmar drf450 deste jeito mas não havia notado a sinalização na luz de Park, o meu problema era um dos sensores de medição de saída e entra da lança.

Please use English
Littoral Translation
Hello Jacob, I already had a problem with the kalmar drf450 like this but I hadn't noticed the warning on the Park light, my problem was one of the sensors measuring the exit and entry of the boom.

Checked the pressure of the pumps at max lift up. And all the pumps seems OK at 3300 psi. Also checked the servo pressure, all is also OK.
But also noticed when the boom is about to pick up, I get this seizure and suddenly it picks up again. At this event, the parking light goes off and comes on likewise even with the parking brake activated

It is most likely that some pump is not giving all the liters