Farm Equipment - HELP WD45 HYDRAULICS

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HELP WD45 HYDRAULICS

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=19817
Printed Date: 08 Feb 2025 at 11:39am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: HELP WD45 HYDRAULICS

Posted By: KY Plow Boy
Subject: HELP WD45 HYDRAULICS
Date Posted: 23 Oct 2010 at 1:33pm

I GOT MY SECOND 45 HOME TODAY, AND THE LIFT ARMS WILL NOT GO DOWN UNLESS YOU PUSH THE CLUTCH OR SHUT THE TRACTOR OFF. I HAVE ADJUSTED ALL THE LINKAGE POINTS ACCORDING TO THE ORIGINAL OWENERS MANUAL. THE SLOTED BRACKET THAT CONNECTS TO THE LIFTING LINKS IS MISSING, BUT I BELIEVE IT'S ONLY FOR TRACTION CONTROL (not sure) THE OTHER BOOK I HAVE SAYS IT MAY BE THE HOLD POSITION BALL NOT OPENING. WOULD I HAVE TO TEAR THE PUMP APART TO LOOK AT THIS, OR JUST THE TOP WHERE THE DELAY ADJUSTMENT IS AT? ALSO THEY ADDED DUAL OUTLETS TO THE REAR OF THE TRACTOR. IT HAS A LEVER ALLOWING YOU TO PRESSURIZE EITHER SIDE OF THE CYLINDER INSTEAD OF VENTING ON ONE SIDE. WOULD THAT HAVE ANYTHING TO DO WITH IT? THANKS FOR ANY HELP. MATT W.

Replies:

Posted By: CTuckerNWIL
Date Posted: 23 Oct 2010 at 3:23pm

How about taking a picture of what you have. Original WD and 45 lift arm cylinders can only be pushed one way by hydraulic pressure. Show us the valve and how it is connected.

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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: KY Plow Boy
Date Posted: 23 Oct 2010 at 5:13pm

I can do that, but the two way valve is for a implement pulled by drawbar, disk, drill, other pull type imp. etc. The lifting links for the SC are original equipment, with only one hose to each cylinder. If you would like I can still take a picture and show you what it looks like. Matt

Posted By: CTuckerNWIL
Date Posted: 23 Oct 2010 at 5:43pm

OK, so if the 2 way valve is beyond the lift cylinders, they would extend first before your remote and that shouldn't effect the lift arms. Then the problem might be in your pump valve.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: DrAllis
Date Posted: 23 Oct 2010 at 6:17pm

If the Traction Booster link (slotted flat iron with a 45 degree kink in it) is missing from the drawbar pull spring, you need to rotate the lower rear lever on the side of the pump counterclockwise a bit and turn in the thumbscrew so it fits into the "divet" in the pump case.....unless you do this, the pump is turned on slowly all the time.

Posted By: KY Plow Boy
Date Posted: 23 Oct 2010 at 10:50pm

Thanks Dr. Allis I'll check and see but I believe I locked it in the detent when I adjusted the linkage per manual, and yes Mr. Tucker the 2-way valve is beyond the lift arms. Matt

Posted By: MACK
Date Posted: 24 Oct 2010 at 6:59am

If the TB link is set like Dr. allis said. then the spool valve inside the pump is stuck. MACK

Posted By: KY Plow Boy
Date Posted: 24 Oct 2010 at 4:44pm

Thanks guy's I was hoping it was something else but looks like I'm gonna have to take the pump off and apart huh. Matt

Posted By: CTuckerNWIL
Date Posted: 24 Oct 2010 at 7:19pm

A couple seven penny nails, bent a little and with the points hammered to a small spoon shape will help in reassembly. I remember wrestling mine off but an old timer showed me how to use the nails to replace the pump.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF