Steering play: new coupling assembly?
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Joined: Oct 2014
Posts: 277
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Steering play: new coupling assembly?
Hi guys,
I'm going to buy some new parts to solve my steering play. I would like to ask you if you think that a new steering coupling assembly is fundamental as far as the play/loose is concerned.
Because of shipping, it costs me more than the other pieces :/

I'm going to buy some new parts to solve my steering play. I would like to ask you if you think that a new steering coupling assembly is fundamental as far as the play/loose is concerned.
Because of shipping, it costs me more than the other pieces :/

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Joined: Jan 2009
Posts: 2,313
Likes: 115
From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: Steering play: new coupling assembly?
that is often called a "rag joint"-you can observe the rag joint while someone moves the steering wheel to see if it has loosend up and causing steering play(plastic steering shaft guard will need unclipped and moved for a good view)IF the rag joint needs replaced,it is sometimes replaced with the steering shaft from a ~1997 chevy astro van shaft as an upgrade to needle bearing "u-joints"from the rag joint.IIRC, certain jeep steering shafts can also work.
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Joined: Oct 2014
Posts: 277
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?
I've read in the net that rag joint is pretty old and no usend anymore in cars since many years, and yes, it causes steering play.
That's interesting, that is, replacing a shaft with rag joint with a u-joint shaft. Could you be more precise? Is it a complex procedure? What parts will I need?
thanks!!
thanks!!
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
Re: Steering play: new coupling assembly?
https://www.thirdgen.org/forums/susp...ing-shaft.html
although James had some issues with his, I've several miles on mine.
a leaky input plug at the steering box will kill a rag joint fast. double check your's is dry or install a shaft seal. pretty simple procedure.
although James had some issues with his, I've several miles on mine.
a leaky input plug at the steering box will kill a rag joint fast. double check your's is dry or install a shaft seal. pretty simple procedure.
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Joined: Jan 2012
Posts: 2,027
Likes: 33
From: Washington State
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock
Re: Steering play: new coupling assembly?
I had a worn rag joint and after replacing it, was very surprised how much tighter my steering was. I did this repair on my 83 Camaro.
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Member
Joined: Oct 2014
Posts: 277
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?

THANKS!
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
Re: Steering play: new coupling assembly?
Check the front seal on your gear box to ensure it is not leaking.
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Thread Starter
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Joined: Oct 2014
Posts: 277
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
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Joined: Aug 2008
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From: Short Summer, VT
Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: Steering play: new coupling assembly?
The rag joint is sometimes loose, but most if the okay is probably in the box.
It can be determined clearly by observing the system while someone moves the steering wheel.
Your box is clearly leaking at the pitman shaft, rebuild the whole thing while its out.
You need an inch-lb torque wrench to do it properly.
It can be determined clearly by observing the system while someone moves the steering wheel.
Your box is clearly leaking at the pitman shaft, rebuild the whole thing while its out.
You need an inch-lb torque wrench to do it properly.
Thread Starter
Member
Joined: Oct 2014
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?
Yeah, we rapidly tested it.
Here some pictures of my rag joint. Mechanic said is it fine right now:



Here some pictures of my rag joint. Mechanic said is it fine right now:



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Joined: May 2010
Posts: 144
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From: Foggia, ITALY
Car: 1987 Trans AM WS6
Engine: 305 TPI
Transmission: TH700R4 Stock
Axle/Gears: 3.08 LSD
Re: Steering play: new coupling assembly?
The rag joint is sometimes loose, but most if the okay is probably in the box.
It can be determined clearly by observing the system while someone moves the steering wheel.
Your box is clearly leaking at the pitman shaft, rebuild the whole thing while its out.
You need an inch-lb torque wrench to do it properly.
It can be determined clearly by observing the system while someone moves the steering wheel.
Your box is clearly leaking at the pitman shaft, rebuild the whole thing while its out.
You need an inch-lb torque wrench to do it properly.
Last edited by F-body driver; Dec 11, 2014 at 12:50 PM.
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From: Short Summer, VT
Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: Steering play: new coupling assembly?
Sorry for the typos earlier.
Rag joint looks fine.
This type of steering gear always develops play over time. Rebuilding is not too hard. A little tedious and it does require special tools. Once you do one of them, they get a lot faster the next time.
Don't bother adjusting the over center, that NEVER helps.
Rag joint looks fine.
This type of steering gear always develops play over time. Rebuilding is not too hard. A little tedious and it does require special tools. Once you do one of them, they get a lot faster the next time.
Don't bother adjusting the over center, that NEVER helps.
Thread Starter
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Joined: Oct 2014
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?
Sorry for the typos earlier.
Rag joint looks fine.
This type of steering gear always develops play over time. Rebuilding is not too hard. A little tedious and it does require special tools. Once you do one of them, they get a lot faster the next time.
Don't bother adjusting the over center, that NEVER helps.
Rag joint looks fine.
This type of steering gear always develops play over time. Rebuilding is not too hard. A little tedious and it does require special tools. Once you do one of them, they get a lot faster the next time.
Don't bother adjusting the over center, that NEVER helps.
I dont wanna rebuild. I'm just going to put a new gearbox.
What do you mean with "adjust the over center" ?
thanks
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From: Short Summer, VT
Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: Steering play: new coupling assembly?
It seems that most if the rebuilt gearboxes aren't built very well. I would take any rebuilt box and check the torque settings. Might as well rebuild the one you have.
The over center adj is the nut on top of the box. The tension is set properly by measuring the torque on the input shaft. Has to be disconnected from everything else.
Many people just tighten it to try and fix the box play. Usually just makes the car wander more when done in the car.
The over center adj is the nut on top of the box. The tension is set properly by measuring the torque on the input shaft. Has to be disconnected from everything else.
Many people just tighten it to try and fix the box play. Usually just makes the car wander more when done in the car.
Thread Starter
Member
Joined: Oct 2014
Posts: 277
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?
It seems that most if the rebuilt gearboxes aren't built very well. I would take any rebuilt box and check the torque settings. Might as well rebuild the one you have.
The over center adj is the nut on top of the box. The tension is set properly by measuring the torque on the input shaft. Has to be disconnected from everything else.
Many people just tighten it to try and fix the box play. Usually just makes the car wander more when done in the car.
The over center adj is the nut on top of the box. The tension is set properly by measuring the torque on the input shaft. Has to be disconnected from everything else.
Many people just tighten it to try and fix the box play. Usually just makes the car wander more when done in the car.
Any suggestion for my mechanic?
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iTrader: (1)
Joined: Aug 2008
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From: Short Summer, VT
Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: Steering play: new coupling assembly?
The "new" gear box will be rebuilt. All depends who rebuilds it. I would check and reset as necessary the torque specs on the input shaft and pitman shaft. These require a good inch pound dial indicated torque wrench. Factory service manual has the specs.
Thread Starter
Member
Joined: Oct 2014
Posts: 277
Likes: 0
From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?
I just bought the new ACDelco steering gear from rockauto.com. I hope it will be already tuned and fine
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