Farmi WP36 - Noisy Hydraulic Pump

[fonzy]

Hello,

 

Hopefully the video link works

 

The video is PTO driven WP36 at idle on 540PTO. It just sounds rough to me and was wondering what others with the same machine thought?

 

When running for an hour or so today the temp rose to 60 deg so i let it idle (when i took the video) as I'm sure it would have hit the 80 mark. The oil level is above the mark and it's not been overheated.

 

Pump sounds like it's on it way out??

 

https://www.dropbox.com/s/42qjvkfj53btxxo/WP36%20noise%20hyd%20pump?dl=0

 

Thanks

[bilke_user]

File won't play for me...... according to Dropbox..... extensionless files can’t be previewed

[fonzy]

Attempt 2

 

Edited January 18, 2017 by fonzy

[Justme]

I am sure the PTO max speed is 480 rpm.

 

60c is not hot for oil.

[adw]

Any air in the system will cause cavitation and noise.

[fonzy]

Hello,

 

400 rpm max. In the video it's approx 250 - 300, to allow it to cool down from a tank temp of 60 degC.

 

I'll have a look for a bleed screw on the pump. The level dose sit low when ramp is in for transit.

 

Thanks

[CalumH]

Hi Fonzy,

• It's 540 PTO gear but with 400 rpm which is about half - 3/4 revs I think (depending on the tractor).
  

 

• Even then I'd still reccomend running it at no more than 350rpm as the machine is plenty fast enough, you'll save fuel and wear on the pump/gearbox
  

 

• 80 degrees is pretty normal. On a hot summers day, I'd give it a break if it heads towards the high 90's
  

 

• Check the gearbox oil
  

 

Give me a call to discuss,

Calum @ Riko

01420 487300

[fonzy]

Top man Callum. I ran it today with no issues but it was -3. Quite possibly I'm being over cautious but it was more the noise of the pump that was worrying me.

 

I'll probably give you a call next week.

 

Thanks

[fonzy]

Just to update.

 

Talked to Callum today and he's given me some things to double check but likely I'm being over cautious.

 

Thanks again for your help Callum.

 

Cheers

 

Fonzy.

[Bogieman]

Check that the ram is retracting completely. It's possible that woodchips, bark etc can get lodged and compacted at the tail end, preventing complete retraction and causing the pump to strain and sound noisy.

It can be quite difficult to remove the very well compacted material due to the difficulty of access, I have found that the best approach is to use an electric drill.