Difference in 440IC drive sprockets?

shinnery · Post by **shinnery** » Fri Apr 24, 2009 12:43 am

When I picked up my latest project, a 58 440IC, Outside blade, the previous owner had an extra sprocket he had bought as NOS but sure wasn't. The casting number on the sprocket is M *09* T. I am pretty sure the first * is a 3 but the second * can be either 8 or 9. Is there a measurement that will identify it as late or early? I need to get the engine running and see if it is worth saving or parting out. It is s/n 444315 and several parts missing. Tracks are only 35 shoes (mostly 14" 2 bolt) so it is going to need plenty of help. Only good thing is it will roll.
Bryce

hunter41mag · Post by **hunter41mag** » Sat Apr 25, 2009 8:09 am

Bryce,

Up to and including serial number 456801 the following part # are used:

regular T 16261 T (previous # M3098T)
snow T 16259 T (previous # M3099T)

From serial number 456802 on the following part # are used:

regular T 16262 T (previous # T10559T)
snow T 16260 T (previous # T13262T)

The difference between the serial number change point is how deep
the sprocket dish from one to another. I do not know which one has the
deeper dish (teeth center to mounting flange machined surface).

I hope this helps.

Don

shinnery · Post by **shinnery** » Sat Apr 25, 2009 8:13 pm

I guess I was reading the parts manual wrong and what I really want to know is what is the difference between a regular sproket and a SNOW (whatever that is) sprocket? And how to tell them apart? The change at the late serial number is to run the same chain as the 1010 I think.
Bryce

shinnery · Post by **shinnery** » Sat Apr 25, 2009 11:42 pm

I went back and looked at my parts lists since I didn't remember any thing about SNOW?? sprockets when I was looking before and truly the casting M 3098 T is a regular sprocket thru s/n 456801 and M 3099 T is a regular sprocket after s/n 456801. Got to looking in the IC parts list for the final drive assembly and found the clue. The stub axle for s/n 456801 and earlieer comes with three 1/2"x1-1/8" dowel pins while the later stub axle comes with three 7/8"x1-3/8" dowel pins. So I can measure the three holes in the sprocket M 3098 T = 1/2" holes and M 3099 T = 7/8" holes. The ICD parts list does NOT mention dowel pin dia. Still don't have the faintest idea what a SNOW?? sprocket is. LOL
Bryce

Post by **Lavoy** » Sun Apr 26, 2009 11:24 am

Snow sprockets are relieved at the bottom of the cup to help alleviate the pressure of snow that gets packed in there. If you run in snow at temps above freezing, it packs in everywhere and the tracks get fiddle tight. Snow sprockets are quite rare, I think I have one, mabye two used ones, but not a matched pair.
Lavoy

shinnery · Post by **shinnery** » Tue Apr 28, 2009 10:45 pm

Well the spare sprocket I bought has three 7/8" holes for the dowels. Looked at my three toys 440IC #444315, 440ICD/831 #449895, and 440ICD/831 #460196 and the best I can tell they all have the big dowels. One of them has the nuts on the outside.
Lavoy, What is the model number for the outside manual adjust blade for a 440IC? and do you have a good blade? This one has the stock outside frame but everything forward of the angle pivot point is homemade junk. Gotta get it running first.
Bryce

Post by **Lavoy** » Wed Apr 29, 2009 2:37 pm

602 is outside arm angle dozer. There is the same blade for 1010, and then one that is the same, but will tilt as well with wedges.
I have nothing left, sorry.
Lavoy

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Difference in 440IC drive sprockets?

Difference in 440IC drive sprockets?

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