[A4] Squeaky front control arms

Aaron Azevedo Aaron.Azevedo at saucony.com
Sun Apr 4 14:28:17 EDT 2004

Nicley done, Igor!

Next time you're under there, could you take some photos to add to your documentation?

Thanks, Aaron

>>> Igor Kessel <kbattpo at verizon.net> 4/4/2004 8:32:05 AM >>>
I have just installed grease fittings in the notoriously squeaky lower 
control arms in my wife's car. I used the M6x1mm, 90° grease fittings 
from McMaster (1105K76). They come in a package of 10.

The cap's thickness of the rear arm was 6.5mm, of the front one was 
7.5mm. The grease fitting thread was 6.5mm long so in the first case I 
used a small metal washer to provide some extra clearance between the 
threaded portion and the ball. I also put the Red Loctite on the thread. 
It's the one that provides a permanent seal.

The rear arm allows for drilling straight up. The front one is upside 
down, so I elected to drill into it at a slight angle as to clear the 
hub housing. I was successful in doing so w/o having to remove the 
control arm from the car, thus I didn't need to do the alignment afterwards..

I used the bottoming M6 tap #3 since there is not much thickness in the 
Aluminium material, and I didn't want to drill into the ball itself to 
provide the extra depth for a regular pointy tap.

So far so good. It sure beats replacing the 4 lower control arms to the 
tune of $300/ea and doing a $125 alignment after that.

FYI folks, Pep Boys sells 90° grease fittings with the 0.25" thread. I 
am not sure about the pitch, but given the choice I would recommend the 
finer  one.
I didn't buy those fittings and chose the metric ones from McMaster 
instead because I hardly have any non-metric tools in my garage, much 
less non-metric taps and dies.

I am CC:ing the biturbo list coz both the B5 S4 and the B5 A6/Allroad 
cars have the same multi-link suspension.

Igor Kessel
two turbo quattros in the stable,
the third one is in the works
A4 mailing list
A4 at audifans.com 
The contents of this email and any attachments are confidential.
They are intended for the named recipient(s) only.
If you have received this email in error please notify the system manager or  the 
sender immediately and do not disclose the contents to anyone or make copies.

** eSafe scanned this email for viruses, vandals and malicious content. **

More information about the A4 mailing list