Check out the last page on Part 3B of "My A4LD Rebuild Diary" in the General Explortions Forum for pics of the filter, o rings, and attachment bolt, and instructions for proper installation... Oh hell... I'll just paste it here. Here ya go....
OTHER THREAD STARTS HERE:
This is very frustrating to me. I think of the DIY errors and frustrations the filter replacement has to be high on the list. WHY? Because the mfgr's do not give you simple info you need. They sell you a filter and do not include the O-rings. Criminal. Ok rant done...Let's walk through this....
Here is a view of the bottom of the filter:
and here is the top:
Here's the printed data:
AA is 2WD, BA is 4WD.
The filter essentially "plugs" into the bottom of the valve body.... in 2 holes... a BIG one...
and a smaller one...
the fit needs a "gasket" or in our case an O-ring... here's one on the big "plug in" portion of the filter...
and here is one on the smaller one...you can clearly see the "microfelt" element....
speaking of which here is a view thru the pickup....
The early filters were but a poor screen... this filter is MUCH better... BUT... people need to know what ALL is needed.... so SAVE the O-rings off the old one and reuse them.... Oh and the attachment bolt they provide.... is too long... SO do they give us 2 bolts and instructions? NOOOO we get but a single bolt... with a funky washer/spacer on it... if you are 4WD... USE THAT washer/spacer.... (it is almost like they WANT you to mess it up, ya know? grrrr)... here is the bolt AND washer/spacer (whichever you prefer to call it)
One last note.. lube the O-rings.. it is a tight fit and may require a little effort to seat it properly....it needs to be liquid tight.
While you have the pan off, pick up some ceramic magnets (Radio Shack has em for example) and add a few to the pan... make sure you don't add em in the filter recess area... here's where I put my 3...
