Help! 977H Recoil spring bolt

Try those cat numbers on Machinery Trader Parts ,and see what you come up with .
I have a D-6 74A ,and got an aftermarket recoil spring ,bolt and nut from an oufit on Ebay located in Florda .
Iwould have to check the part number ,but Iam thinking that 977H and D-6 c's used basically the same undercarriage.

The 977H (53A) uses the D7 undercarriage.
The 5H9460 bolt is the same as used on D7-17A 7409-up.
The 5H9459 nut is also used on the 7409-up 17A plus the earlier 977 20A-2509-up.

I don't have a 53A parts book but the matching 17A7409-up outer spring is still a good available number 5H9474 used on D7 and D8.

The inner spring match is a 5H9475 replaced by a 5S3339

Do a net search for the springs, both or available aftermarket.

Hope that helps.

Wow ,I checked with the local Cat dealer on the 5h9474 outer spring and innerspring used in the D-7 17 A7409 & up .Seens like the same 5H9460 bolt and 5H9459 nut was used in that D-7 also ,and not available .
Whats the answer to this problem other than buying a used spring assembly out of a parts tractor complete ?

Springs are still available aftermarket.
Kind of stuck on the adjuster bolt. This is the one used with hydraulic track adjusters on 5 and 7 roller frame. If you can't find new/aftermarket there's not much choice but to go used or get one made.

Only other option I can think of is to drop back to the earlier non-hydraulic adjuster units with the 8F6218 bolt and go to aftermarket hydraulic adjuster with an extension for the 7-roller. Also takes a different inner spring 6B7110. Used on s/n's 17A6401 to 7408. Don't know if any of these part numbers are available new either.

I got my 941b spring and bolt from cea services in Land O Lakes FL.

Tried to find a used assembly at the start. No go from the local yards or Cat smartparts. The spring was easy. Regal had it in stock. It's this bolt and nut that's kicking my butt. I'll try CES.
If anyone has the engineering specs for the part, I'd appreciate them. Maybe those could help me convince a machine shop to help me outta this.

[quote="Chip S"]Tried to find a used assembly at the start. No go from the local yards or Cat smartparts. The spring was easy. Regal had it in stock. It's this bolt and nut that's kicking my butt. I'll try CES.
If anyone has the engineering specs for the part, I'd appreciate them. Maybe those could help me convince a machine shop to help me outta this.[/quote]

Chip,

You might try Utah track & welding, 801-972-8939, Salt Lake, UT 84120

Kelly

If you can come up with a helpful contact at your local Cat dealer drawings and specs are available for parts out of production.