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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old February 20th, 2020, 09:33   #16
BobnOH
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Join Date: May 2004
Location: central Ohio
Fuel Economy: 50/45/35
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Question- Did you simply tighten the axle nut on the loose bearing?
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Old February 20th, 2020, 10:01   #17
KrashDH
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Join Date: Dec 2013
Location: Washington
TDI(s): 2002 Golf
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Quote:
Originally Posted by BobnOH View Post
Question- Did you simply tighten the axle nut on the loose bearing?

Yes I did. It was only 1


Going to keep an eye on it and whenever I have that wheel up in the air I'll check for play.


But even after 2-3 years of driving on the unit (likely with some of that after it settled MORE) the unit bearing is still tight with no play in the actual bearing interface.
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Old February 20th, 2020, 11:42   #18
KLXD
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I've never replaced those nuts. Never liked the look of the replacements compared to the originals.

Never heard of a torque to yield nut. It's bolts that are torque to yield...as in the length, not the threads.

I've wondered why they want those buggers so tight. Once the inner races touch, they touch. More tension on the spindle keeps it from flexing???
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Old February 20th, 2020, 12:02   #19
KrashDH
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Quote:
Originally Posted by KLXD View Post
I've never replaced those nuts. Never liked the look of the replacements compared to the originals.

Never heard of a torque to yield nut. It's bolts that are torque to yield...as in the length, not the threads.

I've wondered why they want those buggers so tight. Once the inner races touch, they touch. More tension on the spindle keeps it from flexing???
You need more clamping force than just to seat the bearing and "hold" it in place.

I'm sure it has to do with clamping force needed based on shock loading and vibration profiles. Plus the moments on that spindle-bearing interface opposes the clamping force to basically "unload" the preload, like a gigantic spring.
All these factors plus a baked in safety factor, doesn't surprise me it's that high
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