14ff rear went BOOM

[sweetk30]

got a new paper weight for my tool box tonight .

was scraping a 14ff c&c drw axle that had a hard life in a 4x4 dump truck / plow truck. we knew it had a chipped ring gear 4.56 ratio and it was cheeper to swap in a m1008 rear and get the detroit for the win.

so today i was stripping the rear and was going to save the carrier for resale but after removing the shafts it was evedent that she had some problems. splines showed bad wear to a point not square top anymore. and few had chunks missing.

so i removed the ring gear and split the carrier and was washing it down and found this . . . . ( pic's ) yes crappy cell pics . and will get pics later of the shaft teeth .

well the truth is out thay do break every so often but like we have all said before its rare to find a 14ff that goes boom.

thay must have had a full load if not over loaded dump bed. then got it stuck and were rockin the 4 speed back and forth trying to get the truck out and had the wheels stuck in a hole is about the only thing i can think of to do this damage.

 

[dremu]

A little JB Weld, it'd be good as new

-- A

 

[76zimmer]

my wrecker 14 had a cracked pinion, so they aren't bulletproof.






















dam close though.

 

[DrkZide]

Well that looks like some pretty thick metal. It can probably stop a bullet. We need stronger....

 

[owenst7]

Wow. We had a mid-80s 1 ton for many years as our residential dump truck. Even with all the dumb roofers driving it daily and using it as a plow truck in the winter, we never had to rebuild that rearend. Who knows how many tons we put in that thing (all at one time ) regularly...but I do know that the dump bed from that truck is now on a Ford that has had 7000lbs of wet asphalt tearoff in it a few different times.

We sold that Chevy to a toothless scrapper that comes by and loads it to the top of the 4' tailgates with pavers and drives it all the way from Anchorage to Wasilla like that, despite our advice. Goofy guy doesn't even bother to air the tires up when he's doing that. I caught him leaving once with probably less than 40lbs of air in one of the back tires. I told him his tire was low and he said it was fine

 

[6.2Blazer]

It could be a failure caused by fatigue and/or lack of maintenance also. Spend years and years running overloaded and abusing the axle with a snowplow and stuff like that will happen periodically. 14FF are pretty stout but there is a reason they started putting AAM 11.5's and Dana 80's under some pickups.