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Steering play: new coupling assembly?

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Old Dec 7, 2014 | 11:13 AM
  #1  
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Car: 1989 Gray ttop GTA
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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 :/



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Old Dec 7, 2014 | 02:23 PM
  #2  
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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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Old Dec 8, 2014 | 08:20 AM
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Car: 1989 Gray ttop GTA
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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.

Originally Posted by 8t2 z-chev
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.
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!!
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Old Dec 8, 2014 | 09:01 AM
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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.
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Old Dec 8, 2014 | 09:34 AM
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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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Old Dec 8, 2014 | 06:17 PM
  #6  
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From: Italy
Car: 1989 Gray ttop GTA
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Re: Steering play: new coupling assembly?

Originally Posted by naf
[url]
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.
Thank you naf, but I didnt understand this completely. I would really appreciate if you could be a bit more simple (I'm italian)

THANKS!
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Old Dec 8, 2014 | 09:04 PM
  #7  
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From: Lexington, SC
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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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Old Dec 9, 2014 | 10:03 AM
  #8  
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From: Italy
Car: 1989 Gray ttop GTA
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Re: Steering play: new coupling assembly?

Originally Posted by naf
Check the front seal on your gear box to ensure it is not leaking.
We checked and it didn't seem to leak whatsoever. Here a picture:



thanks
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Old Dec 10, 2014 | 08:45 AM
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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.
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Old Dec 10, 2014 | 11:55 AM
  #10  
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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:










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Old Dec 10, 2014 | 12:11 PM
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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?

Originally Posted by stealtht/a
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.
Yeah, stealtht/a is absolutely correct!!!There's a fluid leak where the pitman arm meets the box and a small leak at the input shaft caused by a bad seal!!!!However,replacing or rebuilding the gear box will solve the problem.

Last edited by F-body driver; Dec 11, 2014 at 12:50 PM.
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Old Dec 11, 2014 | 07:58 AM
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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.
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Old Dec 12, 2014 | 07:32 PM
  #13  
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From: Italy
Car: 1989 Gray ttop GTA
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Transmission: auto 700R4
Re: Steering play: new coupling assembly?

Originally Posted by stealtht/a
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.
Im happy you agree that rag looks fine because ultimately I decided not to buy it.

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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Old Dec 15, 2014 | 09:07 AM
  #14  
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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.
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Old Dec 15, 2014 | 06:45 PM
  #15  
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From: Italy
Car: 1989 Gray ttop GTA
Engine: 5700cc
Transmission: auto 700R4
Re: Steering play: new coupling assembly?

Originally Posted by stealtht/a
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.
thanks but this sounds complicated to me. I just can say I've bought a new gearbox. My mechanic will put the new one here. Hope this will be enought to overcome the play/loose.
Any suggestion for my mechanic?

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Old Dec 16, 2014 | 06:44 AM
  #16  
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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.
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Old Dec 16, 2014 | 07:42 AM
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Axle/Gears: 3.27
Re: Steering play: new coupling assembly?

What ratio did you get?
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Old Dec 17, 2014 | 06:51 AM
  #18  
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From: Italy
Car: 1989 Gray ttop GTA
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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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