440 IC 12v Starter Motor

Johndozer · Post by **Johndozer** » Mon Oct 31, 2011 3:08 am

Where can I find a 12V Starter complete for a 440IC?

Bendix drive teeth are gone which I can find...bigger problem is rear cover is split right thru oil hole passage...cover in two pieces.

Works good just no teeth left and rear cover split open.
Scott

Post by **Lavoy** » Mon Oct 31, 2011 7:26 am

They never made a 12 volt starter for a gas 440 if that is what you are woeking on.
Lavoy

Scott Corbett · Post by **Scott Corbett** » Mon Oct 31, 2011 9:19 am

It was converted to 12V before I bought the crawler.

Scott

jtrichard · Post by **jtrichard** » Mon Oct 31, 2011 10:04 am

i have never had any problems just using the 6 volt on a 12 volt change over.... if there are any starter shops any where near you im sure they can use your nose cone and build up a true 12 volt

Post by **Lavoy** » Mon Oct 31, 2011 2:59 pm

99% of 12 volt conversions are just a 12 volt battery on a 6 volt starter.
If you use a lower CCA battery, and small cables, it will likely work. Big battery, big cables, start stocking up on ring gears, starter drives and nose cones.
Lavoy

Scott Corbett · Post by **Scott Corbett** » Tue Nov 01, 2011 2:18 pm

Lavoy,

It sounds like a 12v starter with big cables which is what I have will cause damage.

Is it more likely the bendix drive gears will give out before the ring gear?

Sounds like I need to find or have this 12 volt converted back to a 6v.
It is stamped on the starter case 12v with a part number I cannot locate.

When you say small cables, how small are you talking?

Now I have a cable diameter that you would find on a 12v system. I have not looked at the CCA of the battery, just know it is 12v also.

Scott

Post by **Lavoy** » Tue Nov 01, 2011 2:56 pm

If the starter is stamped 12 volt, then you should be fine on 12 volts. If it still has the delco tag, what is the part number?
Lavoy

Scott Corbett · Post by **Scott Corbett** » Tue Nov 01, 2011 3:48 pm

No Delco Tag.

Hand stamped into case is a 12V and nothing similar to a JD number.
I searched for the PT # that is hand stamped into case and nothing found.

Should I consider down sizing the diameter of the cable from battery to starter?

I will also look at the CCA for the battery.

Scott

Timberwolf13 · Post by **Timberwolf13** » Thu Dec 19, 2013 8:49 pm

Having battery/ starter problems with my 440 and I think this thread showed me why. I think the previous owner made the 12v conversion and left the 6v starter. Battery is big, cables are thick and now the starter just hums and whines and won't turn over. When I was troubleshooting it today I didn't even think about 6v starter. Guess I just assumed they replaced it for 12v.
If this is the case, what would be the recommended cca battery and best cable size? 16ga? 18ga?

jtrichard · Post by **jtrichard** » Thu Dec 19, 2013 9:28 pm

sounds like the bushings are shot and the armature is dragging on the fields........if you want smaller cables then it would be like 6 ga. or maybe 8 ga. at the smallest... i would not go smaller then 6 ga..... 16 ga. or 18 ga. will just melt as they are only good for about 15 amp on a short run

gregjo1948 · Post by **gregjo1948** » Fri Dec 20, 2013 5:33 am

Didn't the 440 with the Detroit diesel use a 12 volt system? gregjo1948

Post by **Lavoy** » Fri Dec 20, 2013 8:36 am

If I do a 12 volt conversion, I use 4 guage cable, and about a 450CCA battery. Probably too many amps to go any smaller cables than that. On a 6 volt, I use 1/0 starter cable and #2 ground. Comparing a 450CCA 12 volt, and a 685CCA 6 volt, you have about 1300 more watts of power with the 12 volts, so not a huge increase.
I stock starter drives, and/or have rebuilt starters available.
Yes, diesels are 12 volt, but starter won't interchange with the gas.
Lavoy

jtrichard · Post by **jtrichard** » Fri Dec 20, 2013 11:49 am

Lavoy 4 ga does sound much better i did not know just how small you meant i do know 16/18 ga would just melt about like a fusible link

Post by **Lavoy** » Fri Dec 20, 2013 12:43 pm

4 gauge may not add that much resistance vs 1/0, but every break you can give a 6 volt starter when on 12 volts the better. Also much easier on ring gear as well.
Lavoy

Timberwolf13 · Post by **Timberwolf13** » Mon Dec 23, 2013 1:34 pm

Sorry guys I meant 6 or 8 ga instead of 16,18. Brain fart.

My problem on my starter was in the push button assembly. It wasn't making good contact on the copper post. Post on starter is worn dwn heavily. Starter shop recommended soldering some coil wire on it to build it up. I just took button off and touched straight to pos to get started for time being. Other than that the starter is in real good shape. Gears and bendix were all good. Brushes and bearings barely worn at all for as old as it is.

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440 IC 12v Starter Motor

440 IC 12v Starter Motor

440 Starter

Didn't think of that.

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