CA starting problem
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=157783
Printed Date: 15 Jan 2025 at 2:39am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: CA starting problem
Posted By: Kirk95
Subject: CA starting problem
Date Posted: 01 Feb 2019 at 6:59pm
| I recently came into possession of a CA model and I’m trying to restore it. I put the new wiring harness on according to the wiring schemati but I still can’t get the tractor to even turn over. It is the pull rod starter type. I don’t have the light switch wired up yet, is that making a difference. Any suggestions would be appreciated |
Replies:
Posted By: Sugarmaker
Date Posted: 01 Feb 2019 at 7:21pm
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Kirk, Welcome. A variety of things could be the problem. Check grounds and also for spark at various places. Regards, Chris ------------- D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet. |
Posted By: Dave(inMA)
Date Posted: 01 Feb 2019 at 9:31pm
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Kirk, welcome to the Forum. You're in the right place to get help with your CA. The light switch affects only the generator charging rate and the operation of the lights. It does not affect whether the engine will turn over. So...since you did not say.......is the engine free so you can turn it over with a hand crank? Assuming that the engine is free, do you know that the starter motor is functioning? Again, assuming so, keep in mind that the circuit involved in spinning the engine with the starter is the battery, ground strap, the cable to the starter switch, the starter switch, and the starter motor. Make sure that the battery is well charged. The ground strap has to be attached to a CLEAN spot on the tractor. The cable from battery to starter switch needs to be in good condition and, if you are using a 6 volt battery, heavy enough to carry the current needed to spin the starter motor. Which brings us to the starter switch which is (my opinion) not one of AC's better ideas. The switch functions by bringing the moving contact inside the switch to touch the copper "button" on the starter motor. Often this switch won't make good enough contact to deliver enough current to spin the starter motor. One test you can perform is to disconnect the cable from the switch, remove the switch from the starter, and then momentarily touch the cable end to the copper button on the starter. If the starter spins, your problem is the switch. Hope this helps! Dave ------------- WC, CA, D14, WD45 |
Posted By: AC720Man
Date Posted: 01 Feb 2019 at 9:31pm
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The CA is a positive ground tractor. This sometimes causes confusion. Check all your connections, make sure they are all clean. Double check the schematic and your wiring connections. The starter may need to be tested. I dont have a diagram but I cant imagine the lights not being hooked up is your problem. Need to get her spinning over first and then go from there. If you haven’t already I would replace the battery cables with good heavy cables. Welding cable is excellent for this. First things first, get the engine spinning over first. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: Ted J
Date Posted: 01 Feb 2019 at 11:09pm
First of all, WELCOME to the forum!!  Which way does yours wire up? Do you have a + or a - ground?? Did YOU disconnect the battery from the tractor? Which way was it? Does it have a 6v (volt) or a 12 volt battery in it? ALL of the above makes a BIG difference in how we continue....... BUT, take heart and we'll go from scratch. Another thought, the starter solenoid could be stuck in the ring gear. This too would not allow the engine to turn over as the starter is jammed. Have you tried to turn the starter over with a crank first? If the engine turns over, do the following..... Let's assume you have an original setup and it is a + (Positive) ground. Take a set of jumper cables and try this: Go from a bolt of a spot on the frame or motor where these is NO paint or take a wire brush and clean a spot off. Clean it GOOD!! Now, hook the BLACK (negative) side of the jumper cables to that bolt or whatever you cleaned off. Hook the other (black) end to the POSITIVE SIDE OF THE BATTERY. Now hook the RED side of the jumper cables to the NEGATIVE side of the battery. Now be careful while doing this next part.... Have nothing hooked to the starter, NOTHING. The bolt coming out of the pull type starter switch (where the pull rod hooks to), hook the other end of the RED jumper cable to that. Now pull on the starter rod. It should turn over. If NOT, you have a bad switch on the starter. This OFTEN happens. This is the first step and the easiest to determine if the starter is any good. Hope this helps. Good luck and come back with more info and we'll get you going. ------------- "Allis-Express" 19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
Posted By: Gerald J.
Date Posted: 02 Feb 2019 at 1:08am
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Shop manual should help. http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf" rel="nofollow - http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf Gerald J. |
Posted By: Dick L
Date Posted: 02 Feb 2019 at 6:26am
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Welcome! Always good to see new names show up. I would start by removing switch on the starter. Two little screws and off it comes. The starter itself doesn't care if it is hooked to positive or negative ground or if it is 6 or 12 volts for testing. You should want to see the inside of the switch at this point anyway at the age of the tractor.   
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Posted By: MACK
Date Posted: 02 Feb 2019 at 7:16am
| If the ground cable is bolted to steering post, move it to toque tube bolt. Steering post screws into torque tube, some times rust around threads don't allow post to ground. MACK |