Fj40- t-case issues

[Limp mode 62]

So I’ve got an h42 trans with the manual t-case, but when it’s in any gear,( 2,4h,4L )doesn’t matter, and I’m coasting in any gear (1,2,3,4 ) the t-case will pop out and go into neutral but as soon as I come to a stop or a slow roll I can put the t-case back into gear so down hills I have to either clutch in or put the trans in neutral so the t-case doesn’t pop into neutral, is there any way I can fix that? Rebuild or something, it works completely fine just can’t coast

 

[unklwedy]

Remove tranny top cover and look at shift fork clearance.

 

[reddingcruiser]

Check the detent ball, spring and shaft for the hi-lo shift fork.

 

[4Cruisers]

Toyota upgraded the shift detent spring to a slightly stiffer spring (90501-16115). That might help.

 

[4x4veteran]

If your T case is anything like my fj40 there is a small lock plate on the rear side of the case. Before you start tearing things apart see it it is still there holding the hi low shaft in place.

 

[65swb45]

Time for a rebuild. Worn shift fork, along with the hi-Lo shift collar, and probably the main output shaft.

 

[Limp mode 62]

Okay, just gonna replace the entire thing, got a donor trans from a bj40, is there any difference in the h42 trans other then the trans input shaft spline count?

 

[65swb45]

We seem to be having a language issue here. We WERE talking about a TRANSFER CASE problem here, not a TRANSMISSION.

 

[Limp mode 62]

Yes, transer case, not transmission

 

[Limp mode 62]

I have another complete trans and t-case but it’s from a diesel and I need one from a gas, as the clutch splines are different, but the t-cases look the same, would I be able to swap t-cases with no problem or is there anything I’d need to do to make it work.

 

[65swb45]

You should be able to swap. More importantly I recommend a swap because...it is more responsible to swap, so you can inspect what you’re installing.

Get a manual (or copy one from here) some new seals and gaskets. If you want to wait until you disassemble the t case you’re planning to swap in, you might find a bearings-included overhaul kit is a better purchase.

 

[Limp mode 62]

Both of them are junk, anyone have a split case for sale ?