Thank you for everyone's posts and help.

I have currently found a supplier that will be doing a run of springs, if anyone else is interested in springs for their rebuild or repair projects speak up now and send me a PM or email and I can get you further info.

It has come to my attention that some of the springs advertised for sale through several parts houses as new and aftermarket are drastically different and not the same. So decision to reproduce a run to spec. seems best route to take.

As cysco's thread said Expressway Spare in NSW Aust. have 17 on Hand. So I rang them and they $4 aud ea ,that's about $2.70 USD plus Postage . I have dealt with them for 40 odd years and they are Spot on LJ

Thank you Lance, I had recently talked with them and deeply considered purchasing them with a great price and fair shipping. Sadly I would still be a few short for future repairs. That being said I decided it was best to leave those 17 on the otherside of the pond for fellow members who may need them. I figured it would be best to have some made up allowing me to fulfill the total needed. Thank you again for your help and taking the time to check on them for me.

Anyone interested in undercarriage spring 0S-1012 order is being placed. Supplier quoted $2.50 a spring plus postage, please PM or email me to order springs now.

Part use:

Twenty s/n L-1 to L-1970
Twenty s/n PL-1 to PL-6319
(used on all idlers and in track rollers)


Thirty single and double flanged track rollers.

Thirty S-1 to S-4683 (unknown - do not have parts book)
Thirty S-4683 to S-9871 (single flange)
Thirty PS-1 to PS11202. (single flange)
Thirty S-9872 on up (single flange)
Thirty PS-11203 on up(single flange)

Thirty S-1 to S-4683 (unknown - do not have parts book)
Thirty S-4683 to S9871 (double flange)
Thirty PS-1 to PS-11202 (double flange)
Thirty S-9872 on up (double flange)
Thirty PS-11203 on up (double flange)

I also believe this spring was used on the undercarriage of the Sixty tractor but can not confirm at this time without a parts book.

These springs were widely used on several models and have been discontinued, a must need for undercarriage repairs.

Hi truckun95,
my Caterpillar Thirty Parts Book, Form No SL193, for S/No's S1001 to S3100 Inclusive.
It indicates that there are 32 of the S1012 Pressure Spring for track roller seal (Effective with Tractor 2076) 15/32"O.D.
x 1 3/16" required.
Cheers,
Eddie B.

"truckun95" wrote:

Looking for 0S-1012 springs for several gas Cats 20, 30, and believe 60. Springs used in track rollers and idlers on different models. I have scurried around and collected one here and there and made several parts contacts already, last step here before the spring shop gets the order. Please PM or email me if any are availiable or a past source someone has used.

Might have a set for a later Cat 30