Yesterday's Tractor Co. The Right Parts, Right Away
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Case Tractors Discussion Forum
Show Parts for Model:

Re: David Brown 990

[Show Entire Topic]  

Author  [Modern View]
UP Oliver

09-05-2013 06:05:59
208.68.25.63



Report to Moderator

I had this same kind of problem with my Oliver 1755, and I took the injection pump gear off and eventually discovered the leak on the outside of the pump shaft tube. (I can't remember the official name of that tube)

I thought about doing this with the 990, hopefully if there is a leak in the front I will see it.

I sent the pump in when I rebuilt the tractor to get looked at since the tractor had not been running for a couple years. They rebuilt the pump for about $550. I had fuel getting in the oil and someone suggested it had to be the lift pump. I got a new one and that did not stop the fuel getting in the oil. So I was told to send my pump back in and have them replace the front seals. The guy told me they can last for 2 day or 10 years or whatever. So there is a chance that they are shot again. It seemed like the oil level went up pretty quickly after I had those seals replaced on the pump.

Anyway, I'm going to look more at the lift pump and if that seems OK I'm going to take the gear off the injection pump and see if any fuel is leaking out the front.

It has to be one or the other. And to leak 3 quarts in 25 or 30 hours of tractor use to me is a bad leak.

Thanks.

[Reply]   [No Email]
J.WJansen

09-06-2013 13:26:13
77.171.88.208



Report to Moderator
 Re: David Brown 990 in reply to UP Oliver, 09-05-2013 06:05:59  
Is it a CAV DPA or a CAV DPS pump ?. Remember trouble with DPS shaft seals on new pumps , Installing new seals overcome problem. The DPA pumps are very reliable and not known for this problem although it can happen. They can operate without lift pump, this is fitted to pump air out in case you run your tank empty. Another thing to check is the fuel pressure in the pump housing.



[Reply]  [No Email]
UP Oliver

09-08-2013 11:11:11
68.70.134.87



Report to Moderator
 Re: David Brown 990 in reply to J.WJansen, 09-06-2013 13:26:13  
Thanks for the response. I have a DPA pump. It has been rebuilt and sent in again later. I hope I don't have to send it in again. If I do, it is not going to the same place it went for the rebuild and the front seal replacement.

Thanks.



[Reply]  [No Email]
[Show Entire Topic]     [Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Add a Reply]

Hop to:
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters