Dana 20 popping out of gear in 2 hi

[trei75bronco]

Never had this issue before so I'm a little lost. The Dana 20 Has Been Coming Out of gear while cruising on the hwy or around town. Any ideas. Phil rebuilt it so it is in good shape

[Moab Mike]

Weak spring.

[Kinder]

Interesting, pretty sure he's rebuilding them with dual springs, I'm sure he'll post up a recommendation.

[Viperwolf1]

It does have dual springs and J type ball pockets. Make sure the rear shifter isn't rubbing anything like the floor sheet metal. Also look for a bent or severely out of balance driveshaft, loose rear yoke, or loose trans to tcase bolts. I know everything inside the case is in good shape.

[Kinder]

Just a thought, we swapped the side that the linkage was on for the twin sticks, do you think it may be hanging up on something or maybe the "throw" isn't long enough.

[Viperwolf1]

Just a thought, we swapped the side that the linkage was on for the twin sticks, do you think it may be hanging up on something or maybe the "throw" isn't long enough.

As I recall we had to lengthen the shifter hole in the floor but the body can shift on the frame if rough wheeling has occurred since then.

[trei75bronco]

I do have a little vibration in the resr. I replaced the rear slip yoke and never had it rebalanced. You think I need to check all the bolts on the tcase , tranny, X member? How tight should the bushing bolt be? Where do I just re balance a drive shaft?

[Viperwolf1]

I do have a little vibration in the resr. I replaced the rear slip yoke and never had it rebalanced. You think I need to check all the bolts on the tcase , tranny, X member? How tight should the bushing bolt be? Where do I just re balance a drive shaft?

Just check the trans to adapter and adapter to tcase bolts. Also the rear yoke nut. The bushing bolts don't need to be super tight. They have sleeves inside so you can't over-compress them and most use cotter pins on the nuts.

Any driveshaft shop should be able to balance and check for straightness.