Page 1 of 2 12 LastLast
Results 1 to 10 of 18
  1. #1
    Elite Member SnowRidge's Avatar
    Join Date
    Jul 2003
    Posts
    3,091
    Location
    East Tennessee
    Tractor
    Power Trac PT-425 / Branson 3520

    Default Non Branson (Napa/Wix) Hydraulic Filter Issues

    Back when it was warm out, I changed the hydraulic filter and fluid in my 3520. I used a Napa 1202 (Wix 51202) filter and Certified Universal Hydraulic Fluid purchased at Sam's Club. Everything went smoothly, and I had no problems after the change -- until the temperatures dropped.

    When the ambient temperature dropped below approximately 70F, I started getting a loud hydraulic whine from the front of the machine. When I say ambient, I am referring to the outside air temperature at the time the machine was first started that particular day, and by extension the temperature of the hydraulic fluid after the machine had been sitting overnight or longer.

    The whine wasn't pure, but had a rattle quality to it, and it was sensitive to both engine RPM and temperature. There was no whine below about 1500 RPM when the temperature was about 70F. As the temperature dropped, the whine started at lower and lower RPMs, until it was present at all speeds when the temperature was about 50F or below. Operating the tractor long enough (at RPMs below the threshold of the whine) eventually warmed the hydraulic fluid enough that it ceased for the day, even at PTO speed.

    The whine only occurred when there was absolutely no load on the hydraulic system. As soon as the bucket was raised, empty or full, and however slowly, or if the 3PH was raised, the whine stopped instantly. It never tapered off or came on gradually. It was either there or not. At no time has there been any obvious degradation of the tractor's hydraulic capabilities. Every thing seemed to work fine, and still does -- although I have been carefull to keep the RPMs down until the machine warmed up.

    Due to circumstances, the machine has sat unused since the fall, and I have just now had a chance to look into this. Google has revealed not a single parallel to what I have experienced -- for any brand of tractor. Specifically, I could find no mention of an abnormal hydraulic whine being eliminated by placing a load on the system.

    After looking at the diagrams in the service manual, it seemed like the most likely culprit would be a malfunctioning relief valve. If loading the hydraulic system hadn't stopped the whine, I would have suspected the hydraulic filter (cavitation due to insufficient intake flow at the pump), but in my mind, I couldn't make the connection to a faulty filter.

    Still, the filter was relatively easy to change, and I had one on hand (genuine Branson), so I changed it. BTW, it is possible to change the filter without draining the fluid first. Just be prepared for a bit of a mess. [img]/forums/images/graemlins/tongue.gif[/img]

    Once I screwed the Branson filter on -- and cleaned up a bit -- I fired her back up and the whine was completely gone. [img]/forums/images/graemlins/crazy.gif[/img]

    So much for my theories. In any event, I don't know if the Napa filter was defective, or if the Napa 1202 is inherently incompatible, but I'll be visiting my friendly dealer and buying nothing but Branson hydraulic filters from now on .

    Just thought I'd pass this little experience on.






  2. #2
    Gold Member
    Join Date
    Jun 2004
    Posts
    274
    Location
    Goodrich IL
    Tractor
    Branson 4720

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    Thanks!
    Good info.

  3. #3
    Silver Member
    Join Date
    Jul 2004
    Posts
    178
    Location
    Northeast..new hampshire
    Tractor
    Zetor C-42 with HL50 loader

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    Glad you stopped whining [img]/forums/images/graemlins/cool.gif[/img] [img]/forums/images/graemlins/cool.gif[/img]

    There was a post about the hydro filters and poor hydraulic response a while back. Seems that century/zetor/branson (ie them folks) had to re-engineer the filter. I have the new filter and it has eliminated my cold weather hydro issues. The issue being a jumpy 3 point hitch, it would hiccup when cold.

    rameye

  4. #4
    Elite Member SnowRidge's Avatar
    Join Date
    Jul 2003
    Posts
    3,091
    Location
    East Tennessee
    Tractor
    Power Trac PT-425 / Branson 3520

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    My 3PH has had the jumpies a couple of times since the machine was new, including when it was delivered. It started again yesterday as soon as I changed the filter. It seems to be related to air getting trapped somewhere in the system during a filter/fluid change. So far, it has always gone away after a couple of hours of operation.

    I've had the new Branson filter I put on for quite a long time, so it probably is one of the old style units.

    I found this today while searching for the thread you mentioned. I haven't been on the board much for some time, and wasn't aware of it. I think Chipperman may have hit the nail on the head.


  5. #5
    Silver Member
    Join Date
    Sep 2005
    Posts
    122
    Location
    Grass Valley, CA
    Tractor
    Branson 3820i

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    And I will add my lyrics to this chorus. I recently did my 50 hour and have noticed the same two issues: The whine and the pounding in the rear axel or jumpy 3 point hitch. And yes, I installed the Napa/Wix filter.

    Jim

    3820i, FEL, BH

  6. #6
    Elite Member
    Join Date
    Sep 2002
    Posts
    3,032
    Location
    Red Bluff, CA
    Tractor
    Changes often!

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    Branson is using Baldwin BT372-10 now, which is longer than the original ones. They do better in colder weather as they have more surface area. Even so, let the tractor warm up a little of course before using it.

  7. #7
    Elite Member SnowRidge's Avatar
    Join Date
    Jul 2003
    Posts
    3,091
    Location
    East Tennessee
    Tractor
    Power Trac PT-425 / Branson 3520

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    <font color="blue">Branson is using Baldwin BT372-10 now, which is longer than the original ones. They do better in colder weather as they have more surface area. Even so, let the tractor warm up a little of course before using it. </font>

    Well, that's not very comforting. Baldwin doesn't seem to provide any micron rating for that filter; nor do they mention whether or not it has a bypass valve. The Wix 51202/Napa 1202 filters do not have a bypass valve and are 5 micron filters, according to Wix. Chipperman's post indicated the Branson hydraulic filters do have a bypass valve.

    To add to the confusion, Wix says they have nothing that cross references to the Baldwin BT372-10, while Baldwin says the Wix 51202 can be replaced by the BT372-10, and they dern sure look identical to boot -- including their length. Their physical specs are almost identical, and the manufacturers list some of the same applications.

    In other words, it sounds like the new Branson filter (or is it Branson recommended filter) is the same sort of unit that was giving me problems. [img]/forums/images/graemlins/frown.gif[/img]

    Any ideas?


  8. #8
    Silver Member
    Join Date
    Jul 2004
    Posts
    178
    Location
    Northeast..new hampshire
    Tractor
    Zetor C-42 with HL50 loader

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    Well thats puzzling to say the least...

    I can only attest to the fact that I put on a kukje filter from the dealer and my jumping 3 point dissapeared.

    I never had a whining issue.

    Not only did I change the filter but cleaned the suction screen also. Never did get any air in the system...maybe I just got lucky.

    The answer will come sooner or later.

  9. #9
    Elite Member
    Join Date
    Sep 2002
    Posts
    3,032
    Location
    Red Bluff, CA
    Tractor
    Changes often!

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    I can't find my Baldwin book right now, but the BT372-10 is larger (longer) than the -MPG, uses cellulose type filter material as compared to microglass, and is a larger micron media, meaning less restrictive. Not sure about the bypass specs, but this is an approved filter by Branson.

  10. #10
    Elite Member SnowRidge's Avatar
    Join Date
    Jul 2003
    Posts
    3,091
    Location
    East Tennessee
    Tractor
    Power Trac PT-425 / Branson 3520

    Default Re: Non Branson (Napa/Wix) Hydraulic Filter Issues

    Thanks, Dave. I appreciate the info.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.