Paps,
have you gotten any info on this yet?
You have an earlier model and the regular parts book does not show it.
Cat should have been able to check the service grams and found the service gram related to this.
Cascade was origonally handling this on the early models but cat released a service gram with the caterpillar part numbers for these parts later on.
If you need the breakdown i can get you that, i just need your email address.
You can send me an email if you want and i'll fix you up with what you need ;o)