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Pszemol
Guest
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 Posted:
Sun Nov 07, 2004 11:34 pm Post subject:
Question about computerized wheel alignment |
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I took my sentra '94 for the CV boot change and I got
computerized wheel alignment with the CV boot job...
After the job was done I got the printout as follows:
Initial Specification Final
Primary Angles Min Max
Front Caster Left 2.3' 0.7' 2.2' 4.2' *
Right 1.6' 0.7' 2.2' 3.7' *
Camber Left -0.1' -1.0' 0.5' -0.2'
Right -1.7' -1.0' 0.5' -1.3' *
Toe Left 0.10' 0.05' 0.15' 0.05'
Right -0.10' 0.05' 0.15' 0.10'
Total 0.00' 0.10' 0.30' 0.15'
Rear Camber Left -0.3' -1.7' -0.2' -0.6'
Right -2.3' -1.7' -0.2' -1.9' *
Toe Left 0.05' -0.05' 0.15' 0.05'
Right 0.10' -0.05' 0.15' 0.15'
Total 0.15' -0.15' 0.25' 0.20'
Trust Angle -0.0' -0.1'
Initial Specification Final
Secondary Angles Min Max
SAI Left 14.6' 14.0' 14.0' 14.6' *
Right 15.3' 14.0' 14.0' 15.3' *
Included Angle Left 14.5' 14.4'
Right 13.6' 14.0'
Toe Out On Turns Left 1.7' 1.7'
Right 1.7' 1.7'
Maximum Turns Left
Right
Toe Curve Change Left
Right
Setback Front 0.3" 0.3"
Rear -0.0" -0.0"
Track Width Diff. 1.2" 1.2"
Wheel Base Diff. 0.3" 0.3"
Am I right suspecting that something is not right with lines
I marked with (*) ? Final readings do not fit into the specs!
I do not know how important is to be inside the specs, but
it looks to me Pepboys did not do a good job... Should I bring
the car back to them to fix the alignment for me ?
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Truck
Guest
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| Posted:
Mon Nov 08, 2004 9:22 am Post subject:
Re: Question about computerized wheel alignment |
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I may be way off base (it's been many years since I had a Nissan on
the rack back in the shop days...) but I *think* the only thing
adjustable on your '94 model Sentra is the toe adjustment. Perhaps
someone else here can confirm or sink my theory on that?
Wil
On Sun, 7 Nov 2004 12:34:03 -0600, "Pszemol" <Pszemol@PolBox.com>
wrote:
| Quote: | I took my sentra '94 for the CV boot change and I got
computerized wheel alignment with the CV boot job...
After the job was done I got the printout as follows:
Initial Specification Final
Primary Angles Min Max
Front Caster Left 2.3' 0.7' 2.2' 4.2' *
Right 1.6' 0.7' 2.2' 3.7' *
Camber Left -0.1' -1.0' 0.5' -0.2'
Right -1.7' -1.0' 0.5' -1.3' *
Toe Left 0.10' 0.05' 0.15' 0.05'
Right -0.10' 0.05' 0.15' 0.10'
Total 0.00' 0.10' 0.30' 0.15'
Rear Camber Left -0.3' -1.7' -0.2' -0.6'
Right -2.3' -1.7' -0.2' -1.9' *
Toe Left 0.05' -0.05' 0.15' 0.05'
Right 0.10' -0.05' 0.15' 0.15'
Total 0.15' -0.15' 0.25' 0.20'
Trust Angle -0.0' -0.1'
Initial Specification Final
Secondary Angles Min Max
SAI Left 14.6' 14.0' 14.0' 14.6' *
Right 15.3' 14.0' 14.0' 15.3' *
Included Angle Left 14.5' 14.4'
Right 13.6' 14.0'
Toe Out On Turns Left 1.7' 1.7'
Right 1.7' 1.7'
Maximum Turns Left
Right
Toe Curve Change Left
Right
Setback Front 0.3" 0.3"
Rear -0.0" -0.0"
Track Width Diff. 1.2" 1.2"
Wheel Base Diff. 0.3" 0.3"
Am I right suspecting that something is not right with lines
I marked with (*) ? Final readings do not fit into the specs!
I do not know how important is to be inside the specs, but
it looks to me Pepboys did not do a good job... Should I bring
the car back to them to fix the alignment for me ? |
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Pszemol
Guest
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| Posted:
Mon Nov 08, 2004 9:09 pm Post subject:
Re: Question about computerized wheel alignment |
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"Steve T" <fotocord@yahoo.com> wrote in message news:2v8l86F2jhsr8U3@uni-berlin.de...
| Quote: | $100 says their machine is out of calibration. Ask them to see the
certification of the last calibration on their machine, I bet it's NEVER be
checked since it was installed.
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How often should they calibrate the machine ?
Do I understand this printing correctly as Initial value is read before
adjustment and Final value is read after adjustment? If so, my
"before" readings were little better than the "after" readings...
| Quote: | BTW the only thing adjustable it the toe.
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If the only thing is toe, how does it influence other angles like Caster or Camber ?
Is there a way for them to set them correctly or not ?
Should I just consider it not-alligned and take my money back ?
I do not want to piss the guy off since I will be going to this shop
more often with my cars going older, but if they did not do the job
right I will not feel bad not paying for it.
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Steve T
Guest
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| Posted:
Tue Nov 09, 2004 12:25 am Post subject:
Re: Question about computerized wheel alignment |
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Pszemol wrote:
| Quote: | I took my sentra '94 for the CV boot change and I got
computerized wheel alignment with the CV boot job...
After the job was done I got the printout as follows:
|
$100 says their machine is out of calibration. Ask them to see the
certification of the last calibration on their machine, I bet it's NEVER be
checked since it was installed.
BTW the only thing adjustable it the toe.
--
Steve
http://www.atlantaracing.com |
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Peter Hill
Guest
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| Posted:
Tue Nov 09, 2004 4:04 am Post subject:
Re: Question about computerized wheel alignment |
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On Mon, 8 Nov 2004 10:09:44 -0600, "Pszemol" <Pszemol@PolBox.com>
wrote:
| Quote: | "Steve T" <fotocord@yahoo.com> wrote in message news:2v8l86F2jhsr8U3@uni-berlin.de...
$100 says their machine is out of calibration. Ask them to see the
certification of the last calibration on their machine, I bet it's NEVER be
checked since it was installed.
How often should they calibrate the machine ?
Do I understand this printing correctly as Initial value is read before
adjustment and Final value is read after adjustment? If so, my
"before" readings were little better than the "after" readings...
BTW the only thing adjustable it the toe.
If the only thing is toe, how does it influence other angles like Caster or Camber ?
Is there a way for them to set them correctly or not ?
Should I just consider it not-alligned and take my money back ?
I do not want to piss the guy off since I will be going to this shop
more often with my cars going older, but if they did not do the job
right I will not feel bad not paying for it.
|
Front normally only has toe in adjustable. Only way to get front
caster and camber set right is to buy adjustable suspension links,
shims, bolts and/or offset bushes. Rear multi link suspension may
have camber and toe in but on FWD it's usually only toe in.
http://www.gmpperformance.com/products/suspension/camber/nissan.htm
Looks like 2002 Altima has rear camber. May find caster sorts itself
when the camber is right but it could become worse.
--
Peter Hill
Spamtrap reply domain as per NNTP-Posting-Host in header
Can of worms - what every fisherman wants.
Can of worms - what every PC owner gets! |
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E. Meyer
Guest
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| Posted:
Tue Nov 09, 2004 7:24 am Post subject:
Re: Question about computerized wheel alignment |
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On 11/8/04 10:09 AM, in article cmngl9.7k.0@poczta.onet.pl, "Pszemol"
<Pszemol@PolBox.com> wrote:
| Quote: | "Steve T" <fotocord@yahoo.com> wrote in message
news:2v8l86F2jhsr8U3@uni-berlin.de...
$100 says their machine is out of calibration. Ask them to see the
certification of the last calibration on their machine, I bet it's NEVER be
checked since it was installed.
How often should they calibrate the machine ?
Do I understand this printing correctly as Initial value is read before
adjustment and Final value is read after adjustment? If so, my
"before" readings were little better than the "after" readings...
BTW the only thing adjustable it the toe.
If the only thing is toe, how does it influence other angles like Caster or
Camber ?
|
Toe measures how close the two wheels come to pointing in exactly the same
direction. Camber measures how close each wheel is to perfectly vertical
along the side of the car - in other words, is the top of the wheel angled
in or out from the bottom of the wheel. Caster measures the angle from
vertical between the top and bottom mounts of the wheel as it rolls.
Changing any one of the settings can have some effect on the others, but you
can't fix camber by setting toe, etc.
| Quote: | Is there a way for them to set them correctly or not ?
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You either have to replace suspension components until the un-settable
settings are in spec or, (the easier way) take it to a frame shop (the
people who straighten cars after accidents). They will bend back whatever
has been knocked out of alignment and usually charge less for the service
than the brand name alignment places get for setting the toe.
It will be eating tires faster than it should if you don't get it fixed.
| Quote: |
Should I just consider it not-alligned and take my money back ?
I do not want to piss the guy off since I will be going to this shop
more often with my cars going older, but if they did not do the job
right I will not feel bad not paying for it.
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He really didn't do you any favors here. Why will you be going back? I'll
bet if you read the fine print on the sales slip, the alignment only covered
adjustable settings. |
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Steve T
Guest
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| Posted:
Tue Nov 09, 2004 9:06 pm Post subject:
Re: Question about computerized wheel alignment |
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Pszemol wrote:
| Quote: | "Steve T" <fotocord@yahoo.com> wrote in message
news:2v8l86F2jhsr8U3@uni-berlin.de...
$100 says their machine is out of calibration. Ask them to see the
certification of the last calibration on their machine, I bet it's NEVER
be checked since it was installed.
How often should they calibrate the machine ?
|
Anytime someone drops one of the heads and that happens quite often. I've
worked in shops with those "computerized" machines and after a while a tape
measure becomes WAY more accurate than those fancy machines are. The
management knows people believe and are impressed with a "printout" and
they could care less if the printout is what is really going on or not.
| Quote: |
Do I understand this printing correctly as Initial value is read before
adjustment and Final value is read after adjustment? If so, my
"before" readings were little better than the "after" readings...
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Because of the idiot operating the machine.
| Quote: |
BTW the only thing adjustable it the toe.
If the only thing is toe, how does it influence other angles like Caster
or Camber ?
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It doesn't. Espcially caster. The camber might change a touch (.1-.2 degrees
if the toe was WAY out) but nothing like that you posted.
| Quote: | Is there a way for them to set them correctly or not ?
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Don't bother.
| Quote: | Should I just consider it not-alligned and take my money back ?
I do not want to piss the guy off since I will be going to this shop
more often with my cars going older,
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Why would you. I hope this isn't a "goodyear" or some other chain tire
store. They are the LAST people you want working on your car.
--
Steve
http://www.atlantaracing.com |
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Pszemol
Guest
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| Posted:
Tue Nov 09, 2004 9:52 pm Post subject:
Re: Question about computerized wheel alignment |
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"Steve T" <fotocord@yahoo.com> wrote in message news:2vatvhF2j3k22U1@uni-berlin.de...
| Quote: | Anytime someone drops one of the heads and that happens quite often. I've
worked in shops with those "computerized" machines and after a while a tape
measure becomes WAY more accurate than those fancy machines are. The
management knows people believe and are impressed with a "printout" and
they could care less if the printout is what is really going on or not.
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Understand.
| Quote: | Do I understand this printing correctly as Initial value is read before
adjustment and Final value is read after adjustment? If so, my
"before" readings were little better than the "after" readings...
Because of the idiot operating the machine.
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So it does not mean the caster/camber changed, they just took
the reading incorrectly ?
| Quote: | If the only thing is toe, how does it influence other angles like Caster
or Camber ?
It doesn't. Espcially caster. The camber might change a touch
(.1-.2 degrees if the toe was WAY out) but nothing like that you posted.
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So all the numbers on my printing are worthless?
| Quote: | Is there a way for them to set them correctly or not ?
Don't bother.
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Ok, but I will try to search for my other printing from the past...
I have SEARS put the tires on and they did alignment as well.
I wonder how SEARS numbers will match numbers from PepBoys.
| Quote: | Should I just consider it not-alligned and take my money back ?
I do not want to piss the guy off since I will be going to this shop
more often with my cars going older,
Why would you. I hope this isn't a "goodyear" or some other chain tire
store. They are the LAST people you want working on your car.
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No, it is very popular chain http://www.pepboys.com/ |
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