Allis Chalmers 5020 operation
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=194202
Printed Date: 30 Apr 2024 at 8:59pm
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Topic: Allis Chalmers 5020 operation
Posted By: iorior
Subject: Allis Chalmers 5020 operation
Date Posted: 22 Mar 2023 at 4:53pm
 Just got a 1980 model 5020 4WD. Perfect mechanically and needed a few days sanding and paint. I don't fully understand the lettering by shift levers/knob. The shift pattern is basic but can't determine if its a 5 or an S in the lower left. There's a knob that wont budge under the seat that has letters "FS L". Also a lever to the left of the knob with letters "M l and H". The PTO and implement levers are fully understandable. I attached a couple of pics and would appreciate any help.
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Replies:
Posted By: steve(ill)
Date Posted: 22 Mar 2023 at 5:52pm
some have the Creeper... some do not... ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 22 Mar 2023 at 5:54pm
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is the "S" a neutral start position ? Where is the shift lever when you start it ? ------------- Like them all, but love the "B"s. |
Posted By: iorior
Date Posted: 22 Mar 2023 at 6:13pm
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Shift pattern looks like this: R 1 3 S 2 4. I wish there was a way to attach a picture.
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Posted By: im4racin
Date Posted: 22 Mar 2023 at 6:19pm
| S is the start position. My guess is the safety switch was bypassed. The m l h is low medium and high range box, bit round knob in that picture. Down for medium and up for high. Knob under seat is suspension firmness for the seat. Turn to adjust. |
Posted By: BrianC
Date Posted: 22 Mar 2023 at 6:30pm
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I was thinking the F,S L knob should be for 3pt arms speed. Fast, Slow, Lock? My old Ferguson TO-20 had an S position on the gear shift. It activated the starter.
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Posted By: iorior
Date Posted: 22 Mar 2023 at 6:31pm
| Also to answer your question, the gearshift is dead center between 1 and 2 when I start...that's neutral |
Posted By: iorior
Date Posted: 22 Mar 2023 at 6:32pm
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This starter is key activated. |
Posted By: iorior
Date Posted: 22 Mar 2023 at 6:34pm
| Thanks...that knob was confusing as it appears to go into the gearbox. Do any of these levers engage/disengage 4WD? |
Posted By: im4racin
Date Posted: 22 Mar 2023 at 9:43pm
| Yes I think you are right on 3pt speed. My mistake |
Posted By: im4racin
Date Posted: 22 Mar 2023 at 9:46pm
| Lever right under seat is 4wd. It's the one that hits the seat pan when up. Up is 2wd down is 4wd |
Posted By: iorior
Date Posted: 23 Mar 2023 at 12:37am
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Thanks. That's the lever which seems to correspond to the embossed letters "F" and "S" which probably mean fast (2WD) and slow (4WD) with a letter "L" below which I don't understand. Or maybe those letters refer to the seat firmness knob and indicate "firm, soft and something else? At least I now know up is 2WD and down is 4WD...it comes close but doesn't hit my seat pan when up. Thanks again
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Posted By: Jim.ME
Date Posted: 23 Mar 2023 at 6:26am
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I believe the knob is turned to adjust the speed the three point arms lower. Turn towards F for faster, S for slower, turned fully clockwise the valve is closed and the arms will not lower (L). I suggest you invest in an Operator's Manual, sooner rather than later.
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Posted By: iorior
Date Posted: 23 Mar 2023 at 8:11am
| Thanks Jim...Unfortunately, the knob wont budge and since I'm happy with lift speed I'm not going to force it (parts are hard to come by for this tractor). I'm thinking now that the lever to the left of the knob is to switch between 2WDand 4WD...your thoughts? Just realized someone answered that question and it is for drive wheels. Also, am looking for a good owners manual...some on ebay seem to be scam-like. Thanks again for your response. |
Posted By: steve(ill)
Date Posted: 23 Mar 2023 at 9:46am
------------- Like them all, but love the "B"s. |
Posted By: iorior
Date Posted: 23 Mar 2023 at 9:48am
| Just ordered the first one listed, thanks |
Posted By: TramwayGuy
Date Posted: 23 Mar 2023 at 11:13am
| You have the 12-speed transmission. Early tractors had only 8; with a fairly large jump between high and low ranges. I have a 5030 with the 8-speed and I wish I had the later one. |