h3
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=200508
Printed Date: 08 May 2024 at 12:32pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: h3
Posted By: lost in h3
Subject: h3
Date Posted: 24 Mar 2024 at 9:43pm
I'm finishing up a total rebuild (everything) on a 1960 h3.Question. Should you get full rpm's at full throttle under no load. Mine rev's up but not all the way unless i manually move the governor.
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Replies:
Posted By: Eric B
Date Posted: 25 Mar 2024 at 6:40pm
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Have you tested the RPM at full throttle? I believe governed RPM is 2000. You would always be able to speed it up by manually moving the linkage against the spring tension in the governor. You would be able to speed it up much higher than 2000 that way. ------------- Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal! |
Posted By: lost in h3
Date Posted: 25 Mar 2024 at 11:47pm
| Thank you for suggestion. I guess my first plan of attack is to get my tack working properly so I know where I'm at rpm wise. |
Posted By: DrAllis
Date Posted: 26 Mar 2024 at 6:33am
| Rated/full load speed of 2,000 RPM means the no-load high idle speed is 2,200 to 2,250 RPM. |
Posted By: steve(ill)
Date Posted: 26 Mar 2024 at 8:20am
I bought one of these digital tacks for $15. You stick a piece of reflective tape on the shaft and point the little meter at it... Works great... We were testing PTO speeds on a pump.. I also checked the drill press / lathe / band saw blade.. etc.... very handly. ------------- Like them all, but love the "B"s. |
Posted By: lost in h3
Date Posted: 26 Mar 2024 at 10:18am
| that sounds good. cheap! |
Posted By: lost in h3
Date Posted: 26 Mar 2024 at 9:57pm
| what is high idle compared to normal idle? |
Posted By: DMiller
Date Posted: 27 Mar 2024 at 5:13am
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High Idle is No load maximum RPM, governor Limit. Will add, as a industry standard, for those engines with advance mechanisms, this keeps those on the Idle low power control components of governor at No advance. |
Posted By: orangeman
Date Posted: 27 Mar 2024 at 1:16pm
| AC released a service bulletin regarding this issue, let me see if I can dig it up! ~ Orangeman |
Posted By: DrAllis
Date Posted: 27 Mar 2024 at 2:54pm
| High idle of 2200-2250 RPM. Low idle of I suppose 400 to 450 RPM. |
Posted By: Fred in Pa
Date Posted: 28 Mar 2024 at 12:18pm
Make sure throttle is pulling linkage against stop bolt head. Throttle linkage has a adjustment to make this happen if not . This is where it all starts to happen . ------------- He who dies with the most toys is, nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
Posted By: lost in h3
Date Posted: 28 Mar 2024 at 6:54pm
| Thank you for the reply Fred. I'll give it a try, currently waiting on a tachometer. |
Posted By: Les Kerf
Date Posted: 28 Mar 2024 at 8:24pm
 I am confused (quite easily actually) Does it stay at no advance at high idle until load is applied?
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DMiller wrote:Posted By: Fred in Pa
Date Posted: 29 Mar 2024 at 6:18am
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Understanding how to adjust and get proper spring tension on spring for high idle is must other wise tachometer is useless .A shop manual has all this in it including complete adjustment of Gov. D-15 is same . All the H 3 and HD3 I seen had tacks .
------------- He who dies with the most toys is, nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
Posted By: DrAllis
Date Posted: 29 Mar 2024 at 6:39am
| Ignition timing advance mechanism is strictly RPM activated. It cannot and does not sense what the engine load is. The advance's "curve" is designed to work with the engines compression ratio and performance at low speed for best lugging ability. |
Posted By: Les Kerf
Date Posted: 29 Mar 2024 at 9:16am
Yup. Unless there is some sort of vacuum sensing apparatus, which I don't believe these engines have. Thus my confusion/misunderstanding/misinterpretation of DMiller's statement above
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Posted By: Fred in Pa
Date Posted: 03 Apr 2024 at 12:26pm
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Did you check the adjustments ------------- He who dies with the most toys is, nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
Posted By: lost in h3
Date Posted: 03 Apr 2024 at 5:49pm
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Fred Haven't did anything for a couple of days, Cold and raining here. I got tach, and high idle is seventeen hundred and low is eleven hundred. There is very little response between the two. I know i can get idle down on carburetor but see know way to raise top end. Would like about 2000rpm'
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Posted By: Jollymon
Date Posted: 08 May 2024 at 9:10am
| Hello, new to the group. Can anyone give me an idea what an H3 is worth? |
Posted By: Eric B
Date Posted: 08 May 2024 at 11:17am
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Welcome to the forum! I suggest you start a new thread and the title will likely catch more response. The more specific you can be the better information results you will receive. Cheers! ------------- Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal! |