| What did I do wrong - new axle no torque [message #367269] |
Wed, 20 October 2021 19:02  |
xplorid
Messages: 213
Registered: February 2012
Location: Boise
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I swapped in a new passenger side one-ton axle/cv from Applied. On the test drive it was hard "torque steer left" - like the passenger side is producing little to no torque.
With the caliper and shock absorber removed I certainly had to wrestle the old one out and the new one in. Spindle nut torqued to 170.
Any guesses on what I did wrong? Is is possible the new axle assembly was not right? The outer cv seemed a bit stiff to me before installation, but what do I know.
Jeff
1974/94 GMCII by Explorer
Manny 6.5 TD Al radiator
1 ton front 4 bags back
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| Re: What did I do wrong - new axle no torque [message #367270 is a reply to message #367269] |
Wed, 20 October 2021 20:04  |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Why did you need an axle in the first place??
Lots of things can cause torque steer. But i would guess a stuff cv should not going straight. But may when you turn???
Hard to say.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: What did I do wrong - new axle no torque [message #367272 is a reply to message #367269] |
Thu, 21 October 2021 09:57 |
xplorid
Messages: 213
Registered: February 2012
Location: Boise
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The old axle had a split in the outer boot.
Since it had to come out I got the new axle to swap in and save the time in the driveway (no RV parking in my neighborhood).
The "old" axle is just a year old I think so a re-boot should give me a good spare axle.
I watched Manny change axles in an hour or less. I took me most of the day.
Brake calipers seemed fine on the short drive back to storage.
Torque steer left is not subtle, and from my limited knowledge that means torque is being mostly transmitted to the left wheel.
I have no clue to the mechanics of a CV, guess I'll have a better idea after the re-boot.
What are the chances that all that wrestling to get the new axle in somehow messed up the CV?
I cannot think of anything else that would get in the way of power to the wheel.
1974/94 GMCII by Explorer
Manny 6.5 TD Al radiator
1 ton front 4 bags back
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| Re: What did I do wrong - new axle no torque [message #367275 is a reply to message #367269] |
Thu, 21 October 2021 12:59 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Really sounds like the right caliper is sticking after you use it to come to a stop and then it lets go at speed so the brakes feel normal next time. Except when you go after a stop the caliper is still clamped on the rotor or the mount is corrupted/worn out or assembled incorrectly and it is jamming upon application.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| [GMCnet] Re: What did I do wrong - new axle no torque [message #367276 is a reply to message #367269] |
Thu, 21 October 2021 13:01 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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I'm confused: "Torque steer left" makes me think that during acceleration
the coach wants to turn left. In that case, I'd say the passenger (RIGHT)
side wheel is applying MORE torque to the road than is the left (driver's)
wheel. So, with your situation appearing to be reversed from my reasoning,
I can't begin to come up with a reason for it. Please clarify for me.
Ken H.
On Wed, Oct 20, 2021 at 8:03 PM jeff sugheir wrote:
> I swapped in a new passenger side one-ton axle/cv from Applied. On the
> test drive it was hard "torque steer left" - like the passenger side is
> producing little to no torque.
> With the caliper and shock absorber removed I certainly had to wrestle the
> old one out and the new one in. Spindle nut torqued to 170.
> Any guesses on what I did wrong? Is is possible the new axle assembly was
> not right? The outer cv seemed a bit stiff to me before installation, but
> what do I know.
> Jeff
> --
> 1974/94 GMCII by Explorer
> Manny 6.5 TD Al radiator
> 1 ton front 4 bags back
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: What did I do wrong - new axle no torque [message #367277 is a reply to message #367269] |
Thu, 21 October 2021 15:09 |
xplorid
Messages: 213
Registered: February 2012
Location: Boise
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Thanks again for the thoughts.
Torque steer left means when accelerating the coach goes to the left and the harder the acceleration the harder the pull to the left. The difference after the passenger axle swap is clear and pronounced.
I thought that meant more power to the left wheel than the right.
I am in no hurry to do all that crawling around so soon, but default is to repair the axle boot on the removed axle and re-install it.
Maybe I will discover something else along the way.
1974/94 GMCII by Explorer
Manny 6.5 TD Al radiator
1 ton front 4 bags back
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| Re: What did I do wrong - new axle no torque [message #369193 is a reply to message #367269] |
Mon, 21 March 2022 15:04 |
xplorid
Messages: 213
Registered: February 2012
Location: Boise
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Just to close this problem thread, it turns out the drivers side axle nut was loose and ruined the wheel bearing (1-ton conversion). That was causing drag and the coach was steering itself left.
With that fixed I am back to a bit of torque steer, which I have been fighting forever.
Jeff
1974/94 GMCII by Explorer
Manny 6.5 TD Al radiator
1 ton front 4 bags back
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| Re: What did I do wrong - new axle no torque [message #369194 is a reply to message #367269] |
Mon, 21 March 2022 15:05 |
xplorid
Messages: 213
Registered: February 2012
Location: Boise
Karma: 0
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Just to close this problem thread, it turns out the drivers side axle nut was loose and ruined the wheel bearing (1-ton conversion). That was causing drag and the coach was steering itself left.
With that fixed I am back to a bit of torque steer, which I have been fighting forever.
Jeff
1974/94 GMCII by Explorer
Manny 6.5 TD Al radiator
1 ton front 4 bags back
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| [GMCnet] Re: What did I do wrong - new axle no torque [message #369198 is a reply to message #369195] |
Mon, 21 March 2022 16:22 |
CJV
Messages: 49
Registered: December 2021
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Not exactly. As time has progressed form the early 70's, engineers have discovered how to minimize torque steer. Even modern high powered vehicles now have a minimum of torque steer. My V6 Mazda 6 will only exhibit torque steer under extreme throttle and even then is completely controllable. Not like early Tornado's which were death traps on slippery roads.
CJ Vermeulen, Scribbler
From: "K2GKK D C_Mac_ Macdonald"
To: "gmclist"
Sent: Monday, March 21, 2022 3:24:33 PM
Subject: [GMCnet] Re: What did I do wrong - new axle no torque
I think torque steer is common to almost all front wheel drive vehicles!
The harder the gas pedal is pushed, the greater the effect!
D C "Mac" Macdonald
Amateur Radio - K2GKK
Since 30 Novemb'53
USAF and FAA, Ret'd
Member GMCMI and Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com
wwww.gmcmhphotos.com/okclb
________________________________
From: jeff sugheir
Sent: Monday, March 21, 2022 15:05
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Re: What did I do wrong - new axle no torque
Just to close this problem thread, it turns out the drivers side axle nut was loose and ruined the wheel bearing (1-ton conversion). That was causing
drag and the coach was steering itself left.
With that fixed I am back to a bit of torque steer, which I have been fighting forever.
Jeff
--
1974/94 GMCII by Explorer
Manny 6.5 TD Al radiator
1 ton front 4 bags back
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| [GMCnet] Re: What did I do wrong - new axle no torque [message #369202 is a reply to message #369198] |
Mon, 21 March 2022 18:07 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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It has a lot to do with front track width, front to rear weight bias, front
ride height, differential ratio, horsepower or perhaps more accurate,
torque, and finally alignment and condition of steering system components.
Some things that I have found useful on GMC's is camber and toe out.
Also, no wide offset wheels. But, they all will exhibit torque steer on
steep uphill, and particularly when the wheels are not pointed straight
ahead.
Jim Hupy
Salem, Oregon
On Mon, Mar 21, 2022, 2:22 PM CJV wrote:
> Not exactly. As time has progressed form the early 70's, engineers have
> discovered how to minimize torque steer. Even modern high powered vehicles
> now have a minimum of torque steer. My V6 Mazda 6 will only exhibit torque
> steer under extreme throttle and even then is completely controllable. Not
> like early Tornado's which were death traps on slippery roads.
>
> CJ Vermeulen, Scribbler
>
>
> From: "K2GKK D C_Mac_ Macdonald"
> To: "gmclist"
> Sent: Monday, March 21, 2022 3:24:33 PM
> Subject: [GMCnet] Re: What did I do wrong - new axle no torque
>
> I think torque steer is common to almost all front wheel drive vehicles!
> The harder the gas pedal is pushed, the greater the effect!
>
> D C "Mac" Macdonald
> Amateur Radio - K2GKK
> Since 30 Novemb'53
> USAF and FAA, Ret'd
> Member GMCMI and Classics
> Oklahoma City, OK
> "The Money Pit"
> TZE166V101966
> '76 ex-Palm Beach
> k2gkk + hotmail dot com
> wwww.gmcmhphotos.com/okclb
>
>
> ________________________________
> From: jeff sugheir
> Sent: Monday, March 21, 2022 15:05
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] Re: What did I do wrong - new axle no torque
>
> Just to close this problem thread, it turns out the drivers side axle nut
> was loose and ruined the wheel bearing (1-ton conversion). That was causing
> drag and the coach was steering itself left.
> With that fixed I am back to a bit of torque steer, which I have been
> fighting forever.
> Jeff
> --
> 1974/94 GMCII by Explorer
> Manny 6.5 TD Al radiator
> 1 ton front 4 bags back
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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