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Low cranking speed 1460


 
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kryptonix
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Joined: 05 Jan 2013
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PostPosted: Sun Jan 06, 2013 7:40 pm    Post subject: Low cranking speed 1460 Reply to specific post Reply with quote

I have a 1460 that cranks very slow. Sometimes I turn the key and nothing hppens. In warm weather it is usually not a problem but cold days are bad. So far I have replaced batteries with new napa golds, new alternator, starter rebuilt. I have traced wires back to cab to look for exposed wires that could be shorting out. No luck there but there is a good amount of wires that I cant get to. I was next looking to replace the battery cables but Case wants my firstborn as a down payment. Any other ideas? Could the keyswitch cause this problem?
 
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ihman73
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Joined: 15 Dec 2011
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Location: Godfrey,IL

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PostPosted: Sun Jan 06, 2013 9:53 pm    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

No I would bet that the cables are the problem. The starter solenoid if older could also be a possible issue as well. You have an amperage flow issue to the starter, if it cranks at all that rules out the "safety" switches, wiring, key switch, inching pedal switch and anything else forward of the engine compartment.
 
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jon f mn
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Joined: 25 Jan 2012
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Location: Pine City Mn

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PostPosted: Mon Jan 07, 2013 5:29 am    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

I'm sure you already know this, but check your
grounds. The vast majority of this kind of problem
are bad grounding. Noone looks at those connections
much. Some times it's rust between the starter and
engine block.
 
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RedRoundhead
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Joined: 05 Jan 2011
Posts: 499
Location: Green Bay, WI

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PostPosted: Mon Jan 07, 2013 7:20 am    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

Ditto on checking the ground cable, and the
starter to engine block mounting area; the starter
grounds via the starter case to the block
(usually). Did you clean the paint off of the
rebuilt starter? I usually buff the starter
flange and where it meets the block, buff the
block, and I then apply dielectric grease when I
bolt the starter on.

If you have a voltage meter, you can isolate the
battery cables, and check resistance in the cables
themselves; you may have a bad cable. Sometimes
only the cable ends, where the crimped connectors
are, are the problem.

A good analog voltmeter is a good investment!

Best of luck!
 
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RedRoundhead
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Location: Green Bay, WI

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PostPosted: Mon Jan 07, 2013 7:47 am    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

Here is a wire resistance calculator.

http://chemandy.com/calculators/round-wire-resistance-calculator.htm
 
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kryptonix
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PostPosted: Mon Jan 07, 2013 3:02 pm    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

Thanks, I will try checking the resistance of the cables. Hopefully its not the starter grounding issue as I had a heck of a time installing that. It's a little tight in there! Very Happy
 
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Dr. Ed
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PostPosted: Mon Jan 07, 2013 4:49 pm    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

Check the ground between the battery and the engine. Usually it is just clamped under a transmission mounting bolt and if it corrodes just a little bit pretty soon it is a lot. Many semi's run a ground cable from the battery to a stud on the starter but not too many tractos or combines do.
 
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notjustair
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Joined: 07 Jun 2010
Posts: 1874
Location: NE Kansas

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PostPosted: Wed Jan 09, 2013 4:01 pm    Post subject: Re: Low cranking speed 1460 Reply to specific post Reply with quote

On old VWs I put in a second solenoid sometimes. There is a lot of wire and resistance from the battery to the ignition switch and then back to the solenoid. They usually spin over much faster then.
 
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