Which oil do I use????????

Posted by valiant farmer on September 11, 2018 at 01:40:31 from (122.57.141.156):

Hi all,

I have a David Brown 850 that the hydraulics aren't working on. My uncle bought it from a scrap metal yard, fixed it up and got it running. The hydraulics always were terribly slow going up, and it took two of us to jump it down (as the shaft end by the TCU was seized. I have pulled that apart and cleaned it up and it moves smoothly now.)
One day it decided to quit working (just when we were needing it desperately!). He always ran 80-90 gear oil in it, but now I am wondering, is that to heavy a grade oil to run the hydraulics? The pump is giving next to no pressure, and the pump bushings are done for. I have seen a video where someone fixed the hydraulics on their 880 (same hydraulic system as mine) and they said that it ran 100% better and faster when they put 30 or 40 weight motor oil in the gearbox.

Does anyone have any experience with this DB hydraulic system?

Was it the gear oil that blew the pump?

Thanks!
Joshua

Replies:

• Re: Which oil do I use???????? Ozlander 14:33:09 09/11/18 (2)
  • Re: Which oil do I use???????? Crazy Horse 16:49:10 09/11/18 (1)
    • Re: Which oil do I use???????? Bob Bancroft 16:58:20 09/11/18 (0)
• Re: Which oil do I use???????? Geo-TH,In 13:57:32 09/11/18 (0)
• Re: Which oil do I use???????? vapet 08:06:02 09/11/18 (0)
• Re: Which oil do I use???????? BarnyardEngineering 04:42:22 09/11/18 (0)
• Re: Which oil do I use???????? buickanddeere 04:33:46 09/11/18 (0)
• Re: Which oil do I use???????? buickanddeere 04:32:52 09/11/18 (0)
• Re: Which oil do I use???????? Steve@Advance 05:21:15 09/11/18 (0)
• Re: Which oil do I use???????? Traditional Farmer 05:02:23 09/11/18 (2)
  • Re: Which oil do I use???????? valiant farmer 14:08:59 09/11/18 (1)
    • Re: Which oil do I use???????? Traditional Farmer 18:29:53 09/11/18 (0)
• Re: Which oil do I use???????? Bob Bancroft 02:39:36 09/11/18 (1)
  • Re: Which oil do I use???????? valiant farmer 13:44:44 09/11/18 (0)

Add a Reply! You must be Logged In to Post Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Optional Video Title: Optional Video URL: Advanced Posting Options Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks. No political comments, hate speech or bigotry of any kind will be tolerated. Violations will be removed and posting privileges may be permanently revoked without notice.   Advanced Posting Tools   Upload Photo  Select Gallery Photo  Attach Serial No List  Return to Post  Upload Photos/Videos Choose Files from your local computer Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]