Allis 170 won't idle down
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=200313
Printed Date: 04 Dec 2024 at 6:02am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Allis 170 won't idle down
Posted By: D17Milo
Subject: Allis 170 won't idle down
Date Posted: 15 Mar 2024 at 11:26am
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The 170 will not idle down. In the past if I would rapidly advance and retract the throttle it would idle down, but under a very slight load it would advance to about 1000 to 1200 rpms. I have removed the governor assembly, I don't see any wear on any parts. The only thing that I did notice was that one weight was a little sticky, but it is now moving freely.I have never had a governor apart so I don't really know what to look for. Thanks.
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Replies:
Posted By: DrAllis
Date Posted: 15 Mar 2024 at 12:14pm
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The governor weights have nothing to do with low idle. You needed to inspect the throttle lever on the carb to make sure it hasn't worked loose on the end of the shaft first and for any worn linkage from the vertical governor arm to the carb second. Third, adjust the cable longer from the hand throttle down to the governor.
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Posted By: steve(ill)
Date Posted: 15 Mar 2024 at 12:51pm
can you work the carburetor rod/ arm by HAND and get it to idle down ? Look for LOOSE or SLOP joints at Dr said.
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Like them all, but love the "B"s.
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Posted By: Lars(wi)
Date Posted: 15 Mar 2024 at 4:20pm
Does it idle down when under load? If the rpm’s drop when you are under load, then press the clutch to stop, or disengage the pto, and the rpm’s then jump way back up, you may have a vacuum leak.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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Posted By: DaveKamp
Date Posted: 15 Mar 2024 at 10:01pm
also check timing, if the advance weights are stuck, it will not retreats and idle well.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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Posted By: D17Milo
Date Posted: 18 Mar 2024 at 6:16pm
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My problem ended up being a gummed up throttle cable. Got it cleaned up and it now idles like it should. Thanks for all the input.
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