Driveline slack question (1 Viewer)

[fj80rodngun]

Going from park to reverse or park to drive seems like there is more than normal play/slack. I had new u-joints installed in front driveshaft but have the same issue. What’s a good method to locate where this play/slack is coming from?

 

[-Spike-]

Put the truck up on 4 jackstands and start moving things.

 

[enox]

I'm not sure how much play you have but mine is minimal...

I have new driveshafts, front end is in great condition and all tight.

I too have a little slack when the driveline goes from loaded to unloaded and the truck is rolling like down a hill or coasting.

If I blip the throttle then there's a little clank that I can hear.

I couldn't find it & a local trusted "land cruiser a only" shop said it was normal, like that little bit of play is in the transfer case...

I'm interested to hear what others have to say as I notice it too and if I can remedy it that would be great.

Although I don't have a viscous coupler, maybe it could be that?

 

[KC masterpiece]

I also have the driveline clunk applying throttle when it is not loaded and when shifting between R P and D.

Interestingly enough mine is not present when the truck is cold, only when warm. I have checked for play in all the usual spots and can't find anything that seems obvious.

Following this thread as well.

 

[TXLX100]

Have the diffs been worked on or modified, auto locker?

I also have the driveline clunk applying throttle when it is not loaded and when shifting between R P and D.

Interestingly enough mine is not present when the truck is cold, only when warm. I have checked for play in all the usual spots and can't find anything that seems obvious.

Following this thread as well.

That sounds like diff(s). If it is, I would try fluid change, maybe thicker fluid, and / or fluid modifier.

 

[KC masterpiece]

Have the diffs been worked on or modified, auto locker?


That sounds like diff(s). If it is, I would try fluid change, maybe thicker fluid, and / or fluid modifier.

No work on the diffs and I have all of the service records from the PO. Fluid on the entire driveline was changed out after I purchased. Can't remember what viscosity I used but it would have been Valvoline in whatever flavor the FSM called for.

If it is a diff issue I will just wait till I regear and that should take care of it.

@enox description above is how mine is. I always thought it was normal.

 

[tacocat]

Diamond Axle Drive Flanges, cool.

How is the transmission/transfer case mount?

 

[fj80rodngun]

Diamond Axle Drive Flanges, cool.

How is the transmission/transfer case mount?

Mounts are good just had new lower case gears installed