Steering Rack and Pinion rotation angle

[far eastan]

good evening everyone.


Please tell me about the angle of Turns Lock to Lock in Rack and Pinion.
The parts of the factory are equal to both left and right.
After rotating 360 degrees, rotate 270 degrees.
Round 1 and 3/4 on both left and right.

The new Rack and Pinion is not equal.
After rotating 360 degrees on one side, it rotates 270 degrees.
However, the other side is rotated 360 degrees and then locks around 180.
One side turns 1 and 3/4, and the other side has only 1 and 1/2 rotations.

This is before attaching to the vehicle.
I rotated it to confirm the centering.

I thought about being a defective product.
But maybe not?


For example, if Rack and Pinion is attached to a vehicle, fluid is filled and air is removed, is there any possibility that it will return to normal?



It looks like "SHIP OF THESEUS".

thank you.

 

[Mooseman]

It's possible you received a rack and pinion with a different ratio than your original. Ratios available are 20.1:1, which were on all models except 18.5:1 on EXT/XL/XUV and 16.0:1 on the TB SS and 9-7x Aero.

It doesn't matter what ratio you have, center is center. Put the rack so it's even on both sides and it should be centered on the steering wheel as well. The number of turns side to side should be the same.

If you did get a higher ratio (lower numerical) R&P, it will be quicker for steering with less turns od the steering wheel, which is actually desirable.

 

[far eastan]

good morning.
Thank you for your always advice.
I am EXT, but the part number was the same as the regular vehicle.
(From the center of the rotation speed of Rack)
The new RACK(From the center of the number of RACK's rotation, it is the closest) was combined with the removed "same position as the Rack shaft in the factory".
If I combine Rack to the steering shaft joint, it will probably not be equal.

Also, in the new RACK Specifications,
TOTAL TURNS Lock to Lock： 3.5
It is written.
The Rack at the time of the factory is "1 and 3/4" and "1 and 3/4", so it will be 3.5.
Therefore, I think the new rack will rotate in the same way.
Even if the fluid is not completely overwhelmed, it may be a defective product if it does not affect Lock to Lock.
I'm very sorry because it was more expensive RACK than genuine products.
It may be better to wait for a new week to begin, business has begun, and the manufacturer will respond.
thank you very much.

 

[Mooseman]

Was this a new or rebuilt unit? What brand name was it?

I imagine it is possible that the pinion was not in the correct position when installed to the rack and is not at the straight ahead position when the rack is at equal lengths on each side.

Looking at the listings on RockAuto, there doesn't seem to be any specified for EXT or SS meaning that you likely got one from a base model at the 20.1:1 ratio. Even the SS listings say it's without the sport steering, so even those you can only get the base version. All this means that you will have more turns lock to lock than your original EXT rack. You can confirm this by check the number of turns lock to lock on your original EXT rack.

 

[far eastan]

Good evening.

The rack was confirmed before installing it to the car.
I turned the Rack shaft with a wrench and checked the center.
Therefore, it is not a problem that occurs after attaching to the EXT, but a problem of RACK itself.
Since the product specification is 3.5 revolutions, it is normal to rotate 1 and 3/4 to the right and 1 and 3/4 to the left.
However, it does not rotate 3.5.

Rack of the factory removed from the car rotates 3.5 revolutions.




Currently, RACK has no hoses, and is not connected to outer tie rods or steering knuckles.

Rack is new.




Of course, before purchasing, I checked the parts number of EXT by selling GM genuine parts.
GM 19330446
Replaces 26100285, 88967181
is.
If you search for 19330446 in Rockauto, you will get compatible parts.
AAE and edelmann are listed.
If you look for something that includes 19330446, 88967181, BBB and Cardone will be listed.
Avoid your favorite Cardone and probably purchased Edelmann.


If fluids and air are not the cause, you may need to return them.

Another thing is to worry.
A cap was installed on the RACK power steering hose inlet and outlet so that the fluid for the test did not leak.
One is gone, not in the packed plastic bag of Rack.
There is very little possibility, but it may be pushed inside.

 

[mrrsm]

Perhaps...A Broken Clock Spring under the Air Bag & Steering Wheel?

 

[far eastan]

good morning.

Probably not broken.
I have never felt a problem.
The steering wheel is fixed before removing the rack and is not touched.

I'm sorry for everyone.
I'm not good at my explanation, and maybe the translation is not going well.

The new rack is not connected to the steering shaft.
It is not rotated with steering wheels and shafts.
The rack is centering on the garage floor.

What I am doing is:

The video rack
TOTAL TURNS Lock to Lock: 3.3


The purchased RACK is Total Turns Lock to Lock: 3.5.

Instead of the steering wheel, the RACK itself (probably input shaft in the video) does not rotate 3.5.

 

[mrrsm]

An FYI.... And Some More "On Topic" Technical Information that may indicate the problem might be with the original Rack & Steering Unit presently installed. Ordinarily... the replacement unit you are installing would be done as already being included with the R&R of the COMPLETE Rack & Pinion System:

 

[Mooseman]

I'm not good at my explanation, and maybe the translation is not going well.

I understand this dilemma. Machine translations aren't the best. Maybe posting some pictures might help us understand.

Here is what I think I'm reading:

If you put the new rack with both sides equal, the flat part on the pinion is not at the proper position to allow the steering wheel joint connector to slip onto the pinion. If you turn the pinion either way to align it with the steering wheel joint, it is no longer centered with unequal lengths of the rack on each side. If this is the case, it was not properly put together.

You also did not indicate the brand name or company name that built it. Some companies are better or worse than others.

 

[far eastan]

Thank you to everyone.

Contact the purchased store, returned it, and now a new one has been shipped.
My car cannot move for a while.
If my new rack was a problem like an air clogging, or if I could adjust it, I wanted to make corrections instead of returning the product.
Thank you for your advice.






The following is the part that I was confirming.
It was not an advanced problem, such as the left and right balance. (lol)
Returns were accepted at 1st stage of poor illustrations.


I'm sorry, I wrote in#5 that I bought Edelmann.
Rack is new. Not Renufacture.
It was the most expensive RACK sold.
Of course, the price is not completely proportional to the performance.

The ACDELCO in # 8 seems to be Total Turns Lock to Lock 4 revolutions.
The RACK at the time of the factory was removed from my car was 3.5.
The product specifications of the RACK I purchased were 3.5.

> IF YOU PUT THE NEW BOTH SIDES EQUAL o THE PINION. IF You Turn the PINION EITHER WAY TO ALIGN It WITH The Steering Wheel Joint, it is No Longered with UNEQUAL LENGTHS OF THE RACK ON EACH SIDE. If this is the case, it was not presly PuttoGether.

I am worried that there is this problem.
The problem may be added after the current problem is solved.
But my problem is more basic.
Simply, the RACK shaft does not turn 360 degrees x 3.5.






I hope the next RACK works normally.

 

[Mooseman]

If you would like a tip, when you install the new rack and have the hydraulic lines connected, fill the pump reservoir with power steering fluid and, with the wheels off the ground and engine not running yet, turn the steering from lock to lock numerous times to purge the air from the rack and lines. Let it rest for a few minutes to let the air in the reservoir rise up, refill the reservoir to proper level, start the engine and turn it again with the wheels off the ground lock to lock. Once on the ground, turn again lock to lock for a final purge. Recheck the fluid level. It should be quiet now.

 

[far eastan]

good morning.
What I was most afraid of.
The newly received product after returned and exchanged had the same problem.
The next product does not seem to be sent. It will be a refund.

So you need to buy another product.
Do you have any recommendations?

For example, I looked at Rockauto.

BBB or AAE?
There is also Cardone 971014.
Cardone's new product may be "different quality" from Cardone 221014 Remanufactured.

The new Cardone has a lid on the input shaft part.

There is also Lares 23525.
There is no problem at stores other than RA.
If you know a new RACK that you can really trust, please let me know.

But I'm very sorry that EDELMANN was the most expensive and confident.
thank you.

 

[psa55]

@far eastan Sorry to read about your troubles here. I replaced my Rack & Pinion last week with a New AAE 64242N from Rock Auto. I had zero issues with this part after installation and fit was excellent. Steering is much smoother than what came out but I also replaced all hoses as well.

To note: this was on an 08 TB, standard wheelbase, NOT the EXT.

Hope that helps.

 

[Mooseman]

Cardone has never been regarded as a quality parts manufacturer. No experience with BBB or Lares but you do have a recommendation for AAE by @psa55 .

 

[far eastan]

Thank you for the recommendation of the rack.
The rack that meets my car is according to GMPARTSGIANT
GM 19330446
is.
Replaces is 26100285, 88967181.

In addition, many GM part numbers are described as compatible products on various external racks (aftermarket parts?).
Therefore, if I trust the number, AAE 64242N can also be used for EXT.
I want to use this part because I want to use a car as soon as possible. But there is anxiety about conformity.


Because a survey is even more confused.
GM 19330446 does not fit SS.
The number that suits SS is
2006 CHEVROLET TRAILBLAZER SS AWD
GM 19330461
Replaces
19207782, 19150430




but,
Looking at the conformity of EDELMANNN 2018
This can also be used, GM 19330446, which is the basic vehicle,
Nevertheless, it is also possible to use SS GM 19330461 19207782.

In other words, GM genuine products are not compatible, but Aftermarket Product is compatible.
I am very anxious.

How can the gear ratio be confirmed?

Can I confirm at Total Turns Lock to Lock?


Total Turns Lock To Lock
CARDONE 971014 3.59
MAVAL 95413MN 3.87
BBB INDUSTRIES N1030206 3.5
AAE 64242N 3.5
LARES 23525 3.5


It seems that SS takes three turns, but 3 is not found.
I checked SS racks because the "rack part number removed from my car" was not found on the GM genuine parts site and was frequently spoken in the SS Forum.

Oem steering rack stamp

www.tbssowners.com

Steering rack....what Cardone P/N?

www.tbssowners.com

Rack and Pinion and other opportunities

www.tbssowners.com

thank you.

 

[far eastan]

Good evening.
I contacted AAE (CRP).
NEW AAE 64242N received the answer that the number of turns is 3.5. "
I ordered, it arrived, but the rotation was 4.2.
In addition, the left and right balance was somewhat different.
However, there is already a car on the jack stand for a long time
I decided to attach Rack because it was difficult to move.
Currently, the car is moving and I don't think there are any major problems.
However, since the fluid was dropped on the floor, we are investigating whether it is old or leaking from a new line.
The rotation of the steering has been delayed.
I need to buy 3.5 turns in the future, but I'm very sorry that I bought it three times and all of them were different turns from the specifications.
Perhaps it's best to overhaul what I removed from my car.
If someone purchases a 3.5 -turn rack in the future, checks before installation, and if it was 3.5, please tell me the rack.
thank you.