Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

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

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

Research & Info
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

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Crawlers, Dozers, Loaders & Backhoes Discussion Forum

1970 Case 1150B blade problems

Welcome Guest, Log in or Register
Author  [Modern View]

09-02-2020 19:31:40

Report to Moderator

I have an 1150B and the blade will only work for about 10 - 15 minutes. I have replaced the charging pump and the main hydraulic pump. I have also drained and replaced all the hydraulic oil and all filters. This dozier has a six way blade and there are no leaks on any of the cylinders. The dozier will move forward and backwards and turn with no problems.
Does anyone have any suggestions on what is causing the blade to stop working, or what to do about it? Any help would be greatly appreciated.

[Log in to Reply]   [No Email]

09-05-2020 06:13:02

Report to Moderator
 Re: 1970 Case 1150B blade problems in reply to JM7331, 09-02-2020 19:31:40  
Before replacing any more parts have a look at the main regulator valve,it could be something as simple as an o'ring on the valve body that's letting the oil bypass,or the valve not seating,the online parts list has changed and it is not as easy to see the parts as it was on the old system,I cannot find a drawing of the main valve.


[Log in to Reply]  [No Email]

09-03-2020 08:39:58

Report to Moderator
 Re: 1970 Case 1150B blade problems in reply to JM7331, 09-02-2020 19:31:40  
Yes, I have actually drained and replaced the hydraulic fluid several times, and replaced all hydraulic filters several times including washing out the metal screen in the tank (it was clean and did not need to be recleaned but I did anyway since I had it out)

[Log in to Reply]  [No Email]

09-03-2020 04:43:40

Report to Moderator
 Re: 1970 Case 1150B blade problems in reply to JM7331, 09-02-2020 19:31:40  
All blade functions stop at the same time, but it's a gradual stop. There is a noticeable slow down in blade response before stopping. Yes the metal filter/screen in the tank was cleaned. I did not do a pressure check, or flow test. My thoughts were that since this was a 1970 model dozier that the pump had enough wear that once the hydraulic fluid got hot it was thin enough to leak past the plates inside the pump, but apparently that was not the case. I have thought about the pressure relief valve and have looked for a replacement, but everywhere I have checked have told me that it is an obsolete part and is no longer available. I can't even find an aftermarket one. Do you have any idea where I could get one?

[Log in to Reply]  [No Email]

09-03-2020 08:30:57

Report to Moderator
 Re: 1970 Case 1150B blade problems in reply to JM7331, 09-03-2020 04:43:40  
Did you recheck the screen to see if it was recloging?

[Log in to Reply]  [No Email]

09-03-2020 04:07:28

Report to Moderator
 Re: 1970 Case 1150B blade problems in reply to JM7331, 09-02-2020 19:31:40  
Do all functions (lift, angle, tilt) all stop in all directions at the same time? Does the blade hold a position if you don't touch the control lever, while you push, after the hydraulic control functions stop? All functions stopping could be the relief valve opening and hanging up open, one possibility. My thought is you need to do some pressure checking to pin point the problem. Did you do any diagnosis before changing the pumps? If so what did you do and what were the results that lead you to change them? Did you clean/change the suction screen/filter inside the hydraulic tank?

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

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 ]

Home  |  Forums

Copyright © 1997-2020 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

Website Accessibility Policy