'87 4+3 drivetrain play
Thread Starter
Melting Slicks
Joined: Jan 2014
Posts: 2,187
Likes: 381
From: Lunenburg MA
'87 4+3 drivetrain play
I have an '87 with a 4+3 manual that has a lot of drivetrain play. At first I thought it was the U-joints so I replaced all 6. I also pulled the Dana down and measured the backlash, it's right on spec. Then I thought maybe the rear hubs, but they feel tight on this 61K car.
It causes some knocking at low speeds (oscillating) and is just generally annoying like a bad U-joint would be.
Just wondering if this is a road traveled before and maybe I'm missing something. I guess it could be the trans or the yoke, but it seems unlikely. The play is there with the OD engaged or not.
Any thoughts appreciated!
It causes some knocking at low speeds (oscillating) and is just generally annoying like a bad U-joint would be.
Just wondering if this is a road traveled before and maybe I'm missing something. I guess it could be the trans or the yoke, but it seems unlikely. The play is there with the OD engaged or not.
Any thoughts appreciated!
Melting Slicks
Joined: May 2014
Posts: 2,892
Likes: 592
From: New Port Richey FL
there could be some play in the trans. is this problem new to the car, (have you been driving it for a while or new owner) I have felt some gear lash in the past in 4+3s is it Excessive?
Thread Starter
Melting Slicks
Joined: Jan 2014
Posts: 2,187
Likes: 381
From: Lunenburg MA
It's not terrible, just annoying.
Thread Starter
Melting Slicks
Joined: Jan 2014
Posts: 2,187
Likes: 381
From: Lunenburg MA
The T-10 drips a little from the shift seals, but it's full. The OD is full of new ATF and no leaks.
Melting Slicks
Joined: May 2014
Posts: 2,892
Likes: 592
From: New Port Richey FL
I replaced everything in the rear suspension over the winter. It didn't make a difference. I didn't change the hubs because they felt tight, maybe that's next. I do have them.
The T-10 drips a little from the shift seals, but it's full. The OD is full of new ATF and no leaks.
The T-10 drips a little from the shift seals, but it's full. The OD is full of new ATF and no leaks.
If you turn off the O-D does the problem get better or worse or no change, I ask because when the Sprag gear or clutches are on their way out they can cause a shutter or looseness (slip)in the trans.
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Thread Starter
Melting Slicks
Joined: Jan 2014
Posts: 2,187
Likes: 381
From: Lunenburg MA
Thread Starter
Melting Slicks
Joined: Jan 2014
Posts: 2,187
Likes: 381
From: Lunenburg MA
I need to disconnect the driveshaft and see how much play is in the trans. It sounds like a rear end clunk, but I pulled that over the winter and checked the backlash, it was right on spec.