Friends 175 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=170854
Printed Date: 07 Oct 2025 at 8:08am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Friends 175 problem
Posted By: Lonn
Subject: Friends 175 problem
Date Posted: 06 May 2020 at 7:21am
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It's a gasoline model with the resistor mounted near the solenoid under battery. It won't crank. When he runs a test light from ground to the terminal with one of the resistor wires it will then crank when he pushes the button. He's 45 miles from me so I haven't seen it myself. He just installed a new solenoid because it wouldn't crank, thinking that would fix it. Grounding issues? Or wires not hooked up properly? Once it starts it runs good. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Replies:
Posted By: Lonn
Date Posted: 06 May 2020 at 7:50am
 ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: MACK
Date Posted: 06 May 2020 at 7:54am
| Switch the two small wires. One is for a ground. MACK |
Posted By: CTuckerNWIL
Date Posted: 06 May 2020 at 9:05am
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The wire on the solenoid, that the picture shows being grounded, most likely goes to a switch on the clutch pedal that HAS to be closed, to complete the ground. Either push the clutch in to 'make' the switch, or replace the bad switch under the clutch, or the break in the wire going to the switch. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: Alvin M
Date Posted: 06 May 2020 at 10:31am
| Put The Small Left Wire On With The Right Wire Then Ground The Left One |
Posted By: Bret (OH)
Date Posted: 06 May 2020 at 11:29am
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I would guess that its the wrong solenoid. I would think that it should have a grounded base solenoid. That solenoid probably uses one small post for its + and the other for its Neg. If so that's the wrong solenoid. With the correct solenoid, One small wire, the one without the resistor hooked to it would go to the S terminal and would complete the magnetic coil to ground through the base to engage the contacts. The other wire that has the resistor would go to the I terminal to supply 12 volts to the coil for starting while the solenoid is engaged.
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Posted By: Lonn
Date Posted: 06 May 2020 at 12:19pm
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
CTuckerNWIL wrote:Posted By: Lonn
Date Posted: 06 May 2020 at 12:23pm
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Lonn
Date Posted: 06 May 2020 at 12:25pm
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Alvin M
Date Posted: 06 May 2020 at 1:52pm
| Yes Just Ground The Rear Post It Will Work |
Posted By: Lonn
Date Posted: 06 May 2020 at 3:25pm
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Alvin M
Date Posted: 06 May 2020 at 4:56pm
| No That Is What That Wire Is For That You Take Off The Back And Put On The Front Post That Post Gives It The Extra Zap |
Posted By: Lonn
Date Posted: 07 May 2020 at 7:23am
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OK thanks, I asked because I saw an old post either on this site or YT that had the same basic issue and someone commented that you would lose the extra zap for starting. It's been a very long time since I've worked on these tractors at the Allis shop. Since the early 1990's. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Bret (OH)
Date Posted: 07 May 2020 at 7:24am
If you do this the power from the ignition switch that powers the coil through the resistor will backfeed the coil in the solenoid and keep the solenoid engaged any time the key is on. If you want to continue to use this solenoid simply ground one of the small posts and hook the wire without the resistor to the other. Tape off the eyelet for the wire with the resistor and leave it unhooked from the solenoid. You will just not have 12 volts to the coil for starting.
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Posted By: Lonn
Date Posted: 07 May 2020 at 7:49am
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Thanks guys, I'm taking all into account. I'm for him getting the correct solenoid and throw that cheap NAPA one, assuming it's cheap. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |