[TR] Is this symptom I'm getting indicative of a bad front wheel bearing?

Tue Feb 28 11:28:30 MST 2023

As mentioned, two things, I'm yet to try. I have a few spare hubs which I
can try as well as some spare wheels I can put on, but this bloody rain
we've been having here in California is more than I can handle.  The car
has been recently commissioned with all new poly bushes. I do my own
repairs and maintenance on the car.
The vibration starts to occur on slight left turns and continues as I keep
turning. It can be felt through the steering wheel. The Stag btw has power
steering.

Sujit

On Tue, Feb 28, 2023 at 9:50 AM Alex & Janet Thomson <
aljlthomson at charter.net> wrote:

> Sujit – Sorry for getting off topic and rambling. Here’s a question or
> two. You mentioned that the vibration comes from the front left wheel
> during left turns. Since the vibration comes through the steering, I would
> suggest that both front wheels could be suspect. Look for any interference
> of tires with body or suspension parts. Does the vibration occur at slight
> steering angles or only when steering sharp left? Don’t discount things
> like a cracked wheel or more likely, a bad tire. I have heard first hand
> accounts that even new tires can be defective.
>
>
>
> Alex Thomson
>
>
>
> *From:* Sujit Roy [mailto:triumphstag at gmail.com]
> *Sent:* Tuesday, February 28, 2023 11:33 AM
> *To:* Alex & Janet Thomson
> *Cc:* Don Hiscock; DAVID MASSEY; triumphs at autox.team.net
> *Subject:* Re: [TR] Is this symptom I'm getting indicative of a bad front
> wheel bearing?
>
>
>
> The rotor has been checked for run out. Only thing left is the bearing and
> wheel. The bearing is easy to change, but so far the replies don't answer
> the original question.
>
> Sujit
>
>
>
>
>
> On Tue, Feb 28, 2023 at 7:15 AM Alex & Janet Thomson <
> aljlthomson at charter.net> wrote:
>
> I didn’t know that MGs used a spacer sleeve and shims for adjustment. How
> fun would that be when doing wheel bearing service on all of my farm
> equipment. Let’s see – 8 tractors, 7 four-wheel hay wagons, 3 balers, four
> hay rakes, and the list goes on…
>
>
>
> Alex Thomson
>
> ’73 TR6
>
>
>
> *From:* Don Hiscock [mailto:don.hiscock at gmail.com]
> *Sent:* Tuesday, February 28, 2023 8:40 AM
> *To:* DAVID MASSEY
> *Cc:* aljlthomson at charter.net; triumphs at autox.team.net
> *Subject:* Re: [TR] Is this symptom I'm getting indicative of a bad front
> wheel bearing?
>
>
>
> Yeah, I know...
>
>
>
> On Tue, Feb 28, 2023 at 7:35 AM DAVID MASSEY <dave1massey at cs.com> wrote:
>
> Still, 101???  Not 100?  Nobody lists a torque setting to +/- 1%
> Especially back in the day.  With the old torsion-beam torque wrenches with
> a linear scale you're lucky to get +/- 5 lb-ft.
>
>
>
> Dave
>
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: Don Hiscock <don.hiscock at gmail.com>
> To: Alex & Janet Thomson <aljlthomson at charter.net>
> Cc: Triumphs <triumphs at autox.team.net>
> Sent: Mon, Feb 27, 2023 7:28 pm
> Subject: Re: [TR] Is this symptom I'm getting indicative of a bad front
> wheel bearing?
>
> It's not a misprint, unless the missing space between the zero and the ell
> count.  It's mainly dyslexic or too-fast reading, or perhaps being more
> familiar with ft-lb convention than lb-ft that led him to see 101.
>
>
>
> On Mon, Feb 27, 2023 at 7:18 PM Alex & Janet Thomson <
> aljlthomson at charter.net> wrote:
>
> Wow! That definitely is a car with a broken leg! I’ve never done any work
> on an MG but I’ve never heard of a pre-load of 101 ft.-lbs. for front wheel
> bearings. All of our farm tractors, about 10, from a Farmall H to a Deere
> 4250, use the common specification of “hand tighten to a slight drag, and
> then back off to the nearest castellation”. That’s what I have done on all
> of our cars and trucks over the years and it seems to work.
>
>
>
> Can someone explain the 101 ft.-lb. spec or is that just a misprint?
>
>
>
> Alex Thomson
>
>
>
> *From:* Triumphs [mailto:triumphs-bounces at autox.team.net] *On Behalf Of *Don
> Hiscock
> *Sent:* Monday, February 27, 2023 7:21 PM
> *To:* Philip Ethier
> *Cc:* Triumphs
> *Subject:* Re: [TR] Is this symptom I'm getting indicative of a bad front
> wheel bearing?
>
>
>
> And I lost a front wheel on my TR3B at 70 mph on I-70 in 2014.  I've not
> quite gotten over that episode yet,  Yes, don't fool around with wheel
> bearings!
>
>
>
> The root cause of my wheel-fell-off episode was a restorer who was more
> used to MG bearing preloads than a TR3's non-preloaded bearings.  He read
> this part of the Red Book service instructions as 101 lb·ft, not 10 lb·ft.
> Yikes.
>
> https://photos.smugmug.com/photos/i-7mHq3MK/0/07d96589/O/i-7mHq3MK.png
>
> https://photos.smugmug.com/photos/i-8zPPqt3/0/1e459484/XL/i-8zPPqt3-XL.jpg
>
> https://photos.smugmug.com/photos/i-wBTPGjg/0/5123f2e5/X3/i-wBTPGjg-X3.jpg
>
>
>
> This happened in western Ohio, not too far from Macy's Garage as it turned
> out.  And although Mark and Co. didn't do the work that led to the wheel
> coming off, they know my car and were able to take it into their shop that
> afternoon while I flew home.
>
>
>
> So listen to the voice of two of us with scary experiences.  Take care
> with wheel bearings.
>
>
>
> On Mon, Feb 27, 2023 at 6:01 PM Philip Ethier <pethier7 at gmail.com> wrote:
>
> Don't mess with wheel bearings.  Get it checked out.  I lost a wheel on my
> TR4 on the way home from the VTR in 2005.
>
>
>
> On Mon, Feb 27, 2023 at 5:35 PM Sujit Roy <triumphstag at gmail.com> wrote:
>
> I have a Stag and have checked and changed various components like bottom
> ball joint and top shock mount, but am still experiencing a vibration,
> through the steering wheel,  from the left front wheel only when I'm
> turning left. The car had been fitted with all new poly bushes.
>
> There is no vibration going straight or when turning right.
>
> I plan to swap the wheel with my spare,  but can a bad bearing cause these
> symptoms?
>
> The hub rotates smoothly and there is no noise.
>
>
>
> The TR6 uses a similar vertical link setup as the Stag. The hub
> bearings are tapered.
>
>
>
>
>
> Sujit
>
>
>
> --
>
> Sujit Roy
> Cupertino, California
>
>
> https://triumphstagblog.wordpress.com/
>
> ** triumphs at autox.team.net **
>
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>
>
>
> --
>
> Phil Ethier West Side Saint Paul Minnesota USA
>
> 1973 Triumph Stag LE22439UBW "uncle jack", Sapphire Blue
>
> ** triumphs at autox.team.net **
>
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>
>
> --
>
> Sujit Roy
> Cupertino, California
>
>
> https://triumphstagblog.wordpress.com/
>

-- 
Sujit Roy
Cupertino, California

https://triumphstagblog.wordpress.com/
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