This has occured to me on two instances, so allow me to go into a little detail here.
No.1: Sunday. At light waiting to turn left. Light turns green, i step on gas, and about a half second later i hear this god awful thump come from the back of the truck. It was so loud i actually pulled over to make sure i didnt break anything. Thought it was a freak coincidence involving the detroit.
No.2: Leaving work yesterday. Back out of parking spot, and shift into drive. About a half second later i get that same thump!
The truck drives fine before and after. Infact, the first instance was on sunday, when i was still 200+ miles from home. (all highway miles) The thump hit hard enough for me to feel like someone kicked the underside of the truck.
This morning i climbed under the truck to inspect the driveshaft. Upon closer inspection, i found that i could wiggle the double cardan. That is, theres play in it. Both of those ujoints were replaced about a year ago now. The double cardan is most likely the one that came from the factory.
My question is, should there be any play in the double cardan? Or should i go out tomorrow and get a new one?
other info that may/may not be important:
the rear was rebuilt 3k miles ago with 4.10's and a detroit. About a thousand miles ago i changed the fluid/filter for the tranny/t-c (but i doubt that second one has any impact on it)
No.1: Sunday. At light waiting to turn left. Light turns green, i step on gas, and about a half second later i hear this god awful thump come from the back of the truck. It was so loud i actually pulled over to make sure i didnt break anything. Thought it was a freak coincidence involving the detroit.
No.2: Leaving work yesterday. Back out of parking spot, and shift into drive. About a half second later i get that same thump!
The truck drives fine before and after. Infact, the first instance was on sunday, when i was still 200+ miles from home. (all highway miles) The thump hit hard enough for me to feel like someone kicked the underside of the truck.
This morning i climbed under the truck to inspect the driveshaft. Upon closer inspection, i found that i could wiggle the double cardan. That is, theres play in it. Both of those ujoints were replaced about a year ago now. The double cardan is most likely the one that came from the factory.
My question is, should there be any play in the double cardan? Or should i go out tomorrow and get a new one?
other info that may/may not be important:
the rear was rebuilt 3k miles ago with 4.10's and a detroit. About a thousand miles ago i changed the fluid/filter for the tranny/t-c (but i doubt that second one has any impact on it)