Hello I have a 2002 hi lo camper model 29bx I believe my cylinder is bad I think it has bleed by ! the pump seems strong and working fine when I raise it it comes up a few inches then does t go any further and bleeds back down fast nothing's stuck in the walls or anything pump fluids correct anyways the cylinder has a tag just says the serial num 803101 but no brand name I've called and emailed jandr camper repair but haven't gotten a response I'm sure there crazy busy I'm looking for a seal kit if anyone could help I would be grateful ty

I am no repair man
But
It is a pump, hydraulic cylinder and valve just like a truck hoist or tractor
The cylinder May new seals or valve or pump

A hydraulic repair shop could repair
I would say the cylinder first, could be just o rings????

Or possibly, you have a manual lowering valve that is slightly open or there is dirt caught in the lowering valve, causing it to leak. There is a procedure in the library to clear the lowering valve if that is the case.

Have you checked the fluid level in the reservoir? If it's low, the top raising will have symptoms similar to what you describe.

- Jack

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