450C ignition wiring

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Smokeydog
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450C ignition wiring

Post by Smokeydog » Mon Sep 10, 2018 6:20 pm

please excuse me if this has been covered. My search results didn't quite answer my question.
I have a mid 70s 450C dozer which I had to completely re wire.
the trouble I'm having is wiring the ignition key switch, can anyone clue me in to what wires attach to the
Bat terminal, ign terminal and the Acc terminal.
Thanks

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shinnery
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Re: 450C ignition wiring

Post by shinnery » Mon Sep 10, 2018 6:40 pm

Ign terminal on a diesel?? Wrong switch.
No trees were hurt in the creation of this message.
But, many electrons were terribly bothered.

440IC/602, 2-440ICD/831 MM UBU-LP, 445N-LP, 445E-LP, BIG MO 400-M, 4 Star-LP M5-D, M5-LP, M602-LP, M670-LP, G900-LP, G900-D, G1000 Vista-LP Case 580CK

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Stan Disbrow
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Re: 450C ignition wiring

Post by Stan Disbrow » Mon Sep 10, 2018 6:51 pm

Hi,

I am used to crawler key switches having one pole with one throw. So, Batt to the battery and Ign to the IP solenoid and the lights. The starter is a separate push button. This is true for my 350C and I would expect it to be the same on your 450C.

If you have a key switch with an Acc position, leave it unhooked or hang your lights onto it if you want a way to energize those without the IP solenoid.

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

Smokeydog
MC crawler
MC crawler
Posts: 4
Joined: Mon Aug 13, 2018 12:24 pm
Location: Washington state

Re: 450C ignition wiring

Post by Smokeydog » Mon Sep 10, 2018 9:40 pm

Yep this is a diesel Dozer
it has a key 3 pole key switch and a push button starter. I have the lights and gauge power on the Acc terminal.
Power from the hot side of the starter through the amp gauge then a fuse then to the Bat. terminal.
The ign. terminal has neutral safety swithch, wire to the S terminal on the solenoid.
Somehow I have messed up and the engine turns over with the key or when I switch the main battery switch on
Thank You

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gregjo1948
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Re: 450C ignition wiring

Post by gregjo1948 » Tue Sep 11, 2018 4:15 am

Don't forget that you need to run a hot wire to the Injector pump when the key is turned on. That wire will allow fuel to the injectors when on and stop fuel to the injectors when turned off.
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17

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Stan Disbrow
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Re: 450C ignition wiring

Post by Stan Disbrow » Tue Sep 11, 2018 5:49 am

Hi,

Power runs thru the Safety switch and then to the starter. How they ran it, I am not sure offhand. I would feed the starter button via the Ign terminal (both right next to each other) and then to the Safety and then to the Starter. That way, the starter won't engage with the key off.

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

Jim B
2010 crawler
2010 crawler
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Location: western Maine

Re: 450C ignition wiring

Post by Jim B » Tue Sep 11, 2018 5:53 am

This is a 450B schematic but it should be about the same and may help you.

Image
Last edited by Jim B on Tue Sep 11, 2018 8:21 am, edited 2 times in total.

Jim B
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2010 crawler
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Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 450C ignition wiring

Post by Jim B » Tue Sep 11, 2018 5:57 am

I don't know as that schematic will be legible for you. Below is the basic description.

1. Wire power from battery terminal of starter solenoid to ammeter
2. Wire Ammeter to fuse or circuit breaker
3. Wire Circuit breaker to battery terminal of ignition switch
4. Wire Ignition Switch’s ignition terminal to hour meter and injection pump fuel shut-off solenoid
5. Wire Ignition Switch’s ignition terminal to start button
6. Wire Starter button to Neutral switch
7. Wire Neutral switch to the starter solenoid energize/pull-in terminal
8. Wire from Ignition Switch accessory terminal to ignition terminal of voltage regulator
9. Wires from Ignition Switch accessory terminal to gauges, light switch, and other accessories
10. Wire from ammeter (same terminal as wire to fuse or circuit breaker is on) to battery terminal of Alternator
11. Wire power from battery terminal of starter solenoid to Battery Terminal of voltage regulator

Smokeydog
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Joined: Mon Aug 13, 2018 12:24 pm
Location: Washington state

Re: 450C ignition wiring

Post by Smokeydog » Tue Sep 11, 2018 7:25 am

Thanks Everyone that's more and better information than I received from any where else.
I would like to see the schematic but how do I enlarge it ?
I an not very tech smart and this is the first forum I have ever used

Jim B
2010 crawler
2010 crawler
Posts: 683
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 450C ignition wiring

Post by Jim B » Tue Sep 11, 2018 7:36 am

I haven't figured out how to get it to resize. Send me a PM with your email and I'll send it as a photo and a PDF in a regular email which you should be able to see. You should watch eBay for a used technical manual or you can get new printed, CD, or downloads from John Deere technical publications on line. Handy to have.

Jim B
2010 crawler
2010 crawler
Posts: 683
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 450C ignition wiring

Post by Jim B » Tue Sep 11, 2018 7:48 am

I found how to change it from thumbnail to normal which helps. My offer to email is still open.

Smokeydog
MC crawler
MC crawler
Posts: 4
Joined: Mon Aug 13, 2018 12:24 pm
Location: Washington state

Re: 450C ignition wiring

Post by Smokeydog » Wed Sep 12, 2018 7:25 am

Thanks everyone for all your help. Great advice, the dozer runs, starts and everything goes on and off when it's supposed to
Thanks a bunch
Smokeydog

Jim B
2010 crawler
2010 crawler
Posts: 683
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 450C ignition wiring

Post by Jim B » Wed Sep 12, 2018 7:28 am

Glad you got it going.

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Stan Disbrow
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Re: 450C ignition wiring

Post by Stan Disbrow » Wed Sep 12, 2018 7:38 am

Hi,

Yes. Indeed. A machine that won't go when you need it is useless for sure!

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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psprague
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Re: 450C ignition wiring

Post by psprague » Wed Sep 12, 2018 6:36 pm

I might be late but I am semi-reliable.

Clickable to the big image...


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The smoke behind the mirrors.

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JD 450c forestry, JD 440A cable skidder

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