F2 Header will not raise
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=132621
Printed Date: 04 Nov 2025 at 1:54am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: F2 Header will not raise
Posted By: Johnwilson_osf
Subject: F2 Header will not raise
Date Posted: 14 Dec 2016 at 8:44am
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So I got the combine all cleaned up, and ready to take the corn head off, and I cannot raise the head. We have a little stand that we place it on, that allows me to easily hook and unhook. I went to move the combine today, and I can only raise the head about 1 foot. The fluid reservoir reads near the upper arrow, and I have full motion on the lever in the cab. Thinking that there might be a link out between the cab, and the valve body, I pulled and pushed on the rod coming out of the valve, and I get the same results. Can anyone give me some things to look at that might help solve this? Thank you. John ------------- Allis Express: Eastern PA on Rt 80 8050, 8010, 6080, 190, D14, DA 6035, AA 6690, 5650, Gleaner F2 |
Replies:
Posted By: BRYAN H
Date Posted: 14 Dec 2016 at 8:50am
| try the poppet #71151711 |
Posted By: Dans 7080
Date Posted: 14 Dec 2016 at 9:00am
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Check your belt tension on the pump. It doesn't take much for it not to work. ------------- When someone tells you Nothings Impossible, Tell them to slam a revolving door |
Posted By: Roger (NE)
Date Posted: 14 Dec 2016 at 9:09am
| Back in the day when I used to run an "F" unless you increased the RPM's it was hard to get a corn head to lift. Even put on a new hydraulic pump and it wasn't a whole lot better. I always figured they just didn't have enough pump capacity for the weight they were lifting. Platform didn't seem to act that way...just the corn head. |
Posted By: DrAllis
Date Posted: 14 Dec 2016 at 9:14am
| You drove it to where it is and it was working. Tighten the pump belt and maybe the engine front countershaft belts if so equipped. Full throttle on the engine speed. |
Posted By: Johnwilson_osf
Date Posted: 14 Dec 2016 at 10:44am
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All, Thank you for the advice. The machine is at 2400rpm when I am trying to lift, so it is not engine speed. The belt has 1/4 inch deflection, so it is pretty snug. I would have to take it apart to see about the poppet, but don't know what I am getting into if I open her up. Any other advice, or I am taking the valve assembly apart? Anything to watch out for taking the valve apart? John ------------- Allis Express: Eastern PA on Rt 80 8050, 8010, 6080, 190, D14, DA 6035, AA 6690, 5650, Gleaner F2 |
Posted By: farmtoybuilder
Date Posted: 14 Dec 2016 at 11:49am
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Tighten belt! 1/4'' is lose! And pump maybe problem. ------------- 5 different TT-10's,5 TT-18's Terra Tigers,B-10,2 B-207's,B-110,2 B-112's,HB-112,B-210,B-212,HB212,2 Scamp's & Homilite T-10. Still hunting NICE HB-112 & anything Terra Tiger & Trailers for them. |
Posted By: wekracer
Date Posted: 14 Dec 2016 at 11:59am
| Check the header lock valve next to the cab. It only shuts off one cylinder. If it's shut off the header will raise a little bit until weight and suction from the other cylinder stop it from going any higher. |
Posted By: AC7060IL
Date Posted: 14 Dec 2016 at 12:49pm
Diddo. I lock header out of habit, then forget later that I did. |
wekracer wrote:Posted By: Johnwilson_osf
Date Posted: 14 Dec 2016 at 6:24pm
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Well I feel like the ass of the day. It was the header lock by the cab door. I can't believe I overlooked that. Thank you to everyone who assisted. From, your dummy of the day ------------- Allis Express: Eastern PA on Rt 80 8050, 8010, 6080, 190, D14, DA 6035, AA 6690, 5650, Gleaner F2 |
Posted By: SteveM C/IL
Date Posted: 14 Dec 2016 at 8:22pm
| I'm guessing your older like me....brain farts become more common |
Posted By: Ed (Ont)
Date Posted: 14 Dec 2016 at 9:28pm
| Once again proving that this is the best site on the internet!! Not many problems that have not had a solution here. |
Posted By: wekracer
Date Posted: 15 Dec 2016 at 6:04am
| There's only one reason why I knew that. It wasn't a lucky guess. So don't feel bad. Your not the only one who has done that. |
Posted By: JFREED
Date Posted: 15 Dec 2016 at 7:06pm
| What model year is that f2? We have a '79 gear drive and I do not recall seeing thay valve |
Posted By: Roger (NE)
Date Posted: 15 Dec 2016 at 7:13pm
| Not sure every machine had them. The FKS I had was a 1973 model with the valve. |
Posted By: old farmer
Date Posted: 15 Dec 2016 at 8:33pm
| I think the valve was only used on machines with header control on it if memory is correct. |
Posted By: JFREED
Date Posted: 15 Dec 2016 at 8:45pm
| Thanx for the information |
Posted By: Dans 7080
Date Posted: 15 Dec 2016 at 9:23pm
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Have had 2 77 f2s with the valve. Both had header height control. ------------- When someone tells you Nothings Impossible, Tell them to slam a revolving door |