PESCI SE25N stops working after 3 times

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Hello everyone, 

My father has a PESCI SE25N truck mounted crane. We have an issue and will be great if anyone can help since I couldn't find any specialist with knowledge of this kind of crane in Moldova.

The crane works perfectly a couple of times but after that it makes a weird sounds and gets slower and slower and finally stops. I'm attaching a video of the same,

We did try to change the oil but that did not help.

 

Thank you in advance 

 

[Conor Wright]

Three things come to mind,

Low oil level?

Blocked filter or dirt in the valve chest?

Pump worn and becoming weaker as oil heats?

Looks like a handy little crane. Hopefully it's not slowing because the extensions are bent.

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On 13/08/2023 at 17:34, Conor Wright said:

Three things come to mind,

Low oil level?

Blocked filter or dirt in the valve chest?

Pump worn and becoming weaker as oil heats?

Looks like a handy little crane. Hopefully it's not slowing because the extensions are bent.

Thank you!!

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There was blockage in part shown in attached image. After cleaning that everything works fine