HD21 Steering clutch
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=113244
Printed Date: 06 Jun 2024 at 7:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HD21 Steering clutch
Posted By: mark0513
Subject: HD21 Steering clutch
Date Posted: 13 Oct 2015 at 2:33pm
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Hi Their new to the forum I just bought AC HD21A wont steer left or right Runs good moves back and forth ok just wont turn thought I would check with the pros ?? Have the manual the former owner said they tried to bleed the hydraulic control valve the machine is a hundred miles away so im trying to get all my ducks in a row before I go back up their Thanks Mark |
Replies:
Posted By: CAL(KS)
Date Posted: 13 Oct 2015 at 3:10pm
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really need to know serial #. early machines had different setup than later ones, break is at 1101 according to minnpar parts book. early setup is like my HD16 if it is prior to 11001. should be a dry clutch machine. If you cant pull the clutch levers back, you have an oil problem. low oil, bad pump. most likely since neither side moves its one of these 2. otherwise something in mechanical linkage from actuator piston, shaft, yoke/bearing, or clutch itself. not likely since both don't work if its newer its fully hyd steer system and I cant help. ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |
Posted By: mark0513
Date Posted: 13 Oct 2015 at 4:11pm
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serial # 11795 HD21A |
Posted By: mark0513
Date Posted: 16 Oct 2015 at 9:57pm
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Just reading in the book it says oil type steering clutches started S/N 12001 so my clutches are of the dry type so I will check the pump and oil I'm going this weekend let you know what I find out thank again Mark
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Posted By: JohnCO
Date Posted: 16 Oct 2015 at 10:05pm
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I assume the machine has been sitting for some time, if so, I'd check the oil level first, maybe take 5 gallons with you. Good luck and keep us posted.
------------- "If at first you don't succeed, get a bigger hammer" Allis Express participant |
Posted By: Adam Stratton
Date Posted: 16 Oct 2015 at 10:35pm
| Ours had been sitting a long time when we got it, and it wouldnt turn at first either. I started using the steering clutches like I would a bobcat (shove one forward, pull the other back) while standing on the correct brake, and it worked. Have you checked the fluid level (up front by the injection pump? That might be the issue as well. |
Posted By: CAL(KS)
Date Posted: 17 Oct 2015 at 5:14am
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if it is early style then you need to check under each clutch housing there is a hole in the bottom. after you put in oil and attempt to turn the machine, see if oil comes out the bottom. most likely if you are low on oil, it is leaking into clutch housing from the release shaft. the seals and or bearings can go out causing oil loss here. hopefully your clutch housing arnt full of oil mud. ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |
Posted By: mark0513
Date Posted: 10 Nov 2015 at 12:16am
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Sorry just getting back first weekend I went found the radiator hose was leaking so I didn't have enough coolant to run it next time filled with oil thought I got the air out after letting it run for a while I noted oil leaking around the pump so pulled it off took it apart replaced all the bearings used that copper spray gasket on the facings worked really good ! put the pump back on pumping out of the bleeder hit the top of the rops pumping well pumping so well found a hose leek below the return line and now I'm out of oil will try to get back up their in a week or so hope to have better luck ? ps not having much luck posting pictures I must be doing something wrong ? uploads/14489/AC_HD21_d.jpg" rel="nofollow - uploads/14489/AC_HD21_d.jpg
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Posted By: CAL(KS)
Date Posted: 10 Nov 2015 at 5:05am
hopefully solving the external leaks will solve the problem ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |