450 Won't Charge

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450FiveString
430 crawler
430 crawler
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Joined: Sun Aug 14, 2016 3:23 pm
Location: Tennessee

450 Won't Charge

Post by 450FiveString » Tue Mar 10, 2020 11:27 am

I've got a straight 450 that won't charge. I've taken the alternator and had it checked out and it's ok. This dozer has a Motorola alternator and I presume it's original. I now suspect the voltage regulator. I just bought a new one (AR77485) but the plug is different. This is the part number in the parts manual but the manual says it has been substituted. The problem is the plug is different. The original plug has 6 wires and the plug has 4 vertical blades and 2 horizontal. The replacement part has 4 horizontal blades with one pair above the other. Anyone know a fix or have a suggestion?

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Lavoy
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Re: 450 Won't Charge

Post by Lavoy » Tue Mar 10, 2020 1:06 pm

I believe I can get them. Ran into this on a 350 a while back, real hard to find, took a month or so to order, but finally came in.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

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450FiveString
430 crawler
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Re: 450 Won't Charge

Post by 450FiveString » Tue Mar 10, 2020 5:22 pm

Get me one if you can Lavoy. My original model number is RS2J1B. I'll post a picture as soon as I figure out how to do it. The new instructions have me confused.

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Re: 450 Won't Charge

Post by Lavoy » Tue Mar 10, 2020 6:04 pm

Shoot me an e-mail at postmaster@jdcrawlers.com with all your info, and I will start the search.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

punkin45629
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Re: 450 Won't Charge

Post by punkin45629 » Wed Mar 25, 2020 11:31 pm

Check your ground strap from battery to metal of dozer. I had same problem and it was the ground not getting good connection

Randynscottsboro
430 crawler
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Location: Scottsboro, Al

Re: 450 Won't Charge

Post by Randynscottsboro » Thu Mar 26, 2020 5:12 am

Hey banjo. I changed mine out with a one wire delco, but I think I saved the old parts. I will look today for you and you can have them if it will help you out. Hope all is well with you and family.
2130 HFWD
1120 JD
Case SC
1846 Case skidsteer
2030 JD
450 JD
350 Case crawler
3110D Yanmar

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450FiveString
430 crawler
430 crawler
Posts: 53
Joined: Sun Aug 14, 2016 3:23 pm
Location: Tennessee

Re: 450 Won't Charge

Post by 450FiveString » Thu Mar 26, 2020 7:00 am

Hey Randy, good to hear from you. Thanks for the offer but I got a new voltage regulator from Lavoy and that fixed the problem. It's charging now. All is fine here, just a lot of rain like last year and going a little stir crazy. I'm retired now and itching to get out and move some dirt when things dry up a little.

Randynscottsboro
430 crawler
430 crawler
Posts: 93
Joined: Thu Oct 02, 2008 2:36 pm
Location: Scottsboro, Al

Re: 450 Won't Charge

Post by Randynscottsboro » Thu Mar 26, 2020 7:05 am

Glad you got it fixed, wish I could say the same. I am still looking for trans parts. We have plenty of liquid sunshine here too.
2130 HFWD
1120 JD
Case SC
1846 Case skidsteer
2030 JD
450 JD
350 Case crawler
3110D Yanmar

dtoots1
2010 crawler
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Location: akron, ohio

Re: 450 Won't Charge

Post by dtoots1 » Thu Mar 26, 2020 7:50 pm

Randy5string,

when you have a chance to set down at your computer and would like to upload some pics, try taking it one step at a time, if still problems send me a pm...and i will try to walk you thru it

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