2014 m8 153 broken jack shaft.

[JFisher_73]

Broke my jack shaft today.. snapped right behind the bearing on the clutch side. bearing is still good so it didn't seize and cause the problem but was wondering if it's a common problem on the 14's and if their is any better options besides a new one from Cat. TIA.

 

[E-Zmoke]

Broke my jack shaft today.. snapped right behind the bearing on the clutch side. bearing is still good so it didn't seize and cause the problem but was wondering if it's a common problem on the 14's and if their is any better options besides a new one from Cat. TIA.

First I've ever heard of a jack shaft failure on a Proclimb, do you have any pics? Clean break? Possible manufacturing defect, and cracked then failure? I'd be sending it into Cat to see if they will cover it.

 

[Cat401]

I have never heard of a shaft breaking. 14'....should still be under warranty?

 

[0neoldfart]

There has been a few reported since 2012 - enough that Cat beefed up the shaft for 2015. Buy a replacement 2015 shaft and top gear (they are different), you'll be good to go. Another alternative is Scott Taylor's, OSP, or Belanger Racing. These shafts are considerably heavier yet, you'd be hard pressed to break one.

 

[JFisher_73]

There has been a few reported since 2012 - enough that Cat beefed up the shaft for 2015. Buy a replacement 2015 shaft and top gear (they are different), you'll be good to go. Another alternative is Scott Taylor's, OSP, or Belanger Racing. These shafts are considerably heavier yet, you'd be hard pressed to break one.

Have you put a 15 jack shaft in a 14? I looked at the part diagrams for the two and they have a few different pieces
First pic is a 14 second is the 15.

 

[JFisher_73]

First I've ever heard of a jack shaft failure on a Proclimb, do you have any pics? Clean break? Possible manufacturing defect, and cracked then failure? I'd be sending it into Cat to see if they will cover it.

ill get some pictures probably tonight when I take it apart. And I'll see if they'll warranty anything. just came off the extended warranty so doubtful Cat will cover anything. sled has around 1300 miles.

 

[kanedog]

I have a new 2015 cat Jacks haft for sale. $150.00
Jacks haft are the latest thing. Way better than Jacks haft.

 

[0neoldfart]

Have you put a 15 jack shaft in a 14? I looked at the part diagrams for the two and they have a few different pieces
First pic is a 14 View attachment 193490 second is the 15.View attachment 193491

There is an update kit: p/n 1702-467. Comes with what you need to upgrade the shaft in the 2012-2014's

 

[mur190]

I broke a jack shaft on my 12 800 with just over 1100 miles. Same spot.