This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Allis Chalmers > Construction and other equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


Hydraulic spool valve help
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Ken stanwood View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 06 May 2012
Location: Stanwood WA
Points: 38 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken stanwood Quote  Post ReplyReply Direct Link To This Post Topic: Hydraulic spool valve help
    Posted: 17 Jan 2021 at 3:50pm
I have a D15 commercial with a loader. the spool valve is broken and not repairable. It has a port on the back of the valve that fits over a pipe that sticks out of the reservoir (the loader support) and is sealed by a rubber washer when the valve is bolted up. I could not find a replacement valve the same. Is this a return, or some kind of pressure relief? Is seems I can just plumb the valve without this and block off the pipe sticking out of the reservoir.
Back to Top
Sponsored Links


Back to Top
Ken stanwood View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 06 May 2012
Location: Stanwood WA
Points: 38 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken stanwood Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 2021 at 3:51pm
Back to Top
Ken stanwood View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 06 May 2012
Location: Stanwood WA
Points: 38 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken stanwood Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 2021 at 3:54pm
Here is the front of the valve
Back to Top
Jim.ME View Drop Down
Orange Level
Orange Level


Joined: 19 Nov 2016
Location: Maine
Points: 952 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2021 at 4:51pm
Without seeing your valve and figuring out just how it is ported to be certain, I will guess that port into the reservoir, which the valve slides over, is the oil return for the system.  You should have a supply line coming from the pump and you need a return to reservoir.  If it doesn't have a dedicated return hose, between the valve and reservoir, that port is the system return point.

You will need to make a mounting bracket for the valve and since the new valve will most likely have a port for a return hose, you will need to have a place to connect that return hose to the reservoir.   You could modify that port to accept a hose or make another port and plug that one.  
Back to Top
Ken stanwood View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 06 May 2012
Location: Stanwood WA
Points: 38 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken stanwood Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2021 at 11:07pm
The original valve does have a return port.
Back to Top
Ken stanwood View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 06 May 2012
Location: Stanwood WA
Points: 38 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken stanwood Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2021 at 11:09pm
Thank you for helping.
Back to Top
Jim.ME View Drop Down
Orange Level
Orange Level


Joined: 19 Nov 2016
Location: Maine
Points: 952 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2021 at 5:22am
Since your existing valve already has a separate return hose you can use that for the return from the new valve and plug the port, shown in your pictures under the old valve.

You didn't say, and I didn't ask, but is this just a loader tractor or does it have a backhoe on it as well?  That could make a difference if there is a power beyond set up.


Edited by Jim.ME - 19 Jan 2021 at 5:25am
Back to Top
Ken stanwood View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 06 May 2012
Location: Stanwood WA
Points: 38 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken stanwood Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2021 at 11:10pm
I think it may have had a hoe on back in a different life but not now.
Back to Top
Coke-in-MN View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 12 Sep 2009
Location: Afton MN
Points: 41609 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 21 Jan 2021 at 11:14am
Is it a open center valve body with that being the return line back for flow when NO supply is needed to cylinders ?
A valve body with how many outlet ports ? Big thing is getting a valve body rated for the pump capacity along with if oil is ported so as to have regenerative circuit within . 
 AC used a retentive system where oil from one movement of cylinders flowed into opposite end of cylinder when designing their backhoe operation. 
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.078 seconds.


Help Support the
Unofficial Allis Forum