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-   -   ML320CDI Fuel and Air Filters Changed (http://www.peachparts.com/shopforum/showthread.php?t=206121)

DUTCH 11-24-2007 03:55 PM

ML320CDI Fuel and Air Filters Changed
 
This job is not your average DIY job; and since the air filters have to be removed to access the fuel fillter, it's definitely a job to be done at the same time.

25K on my ML320CDI. Disassembly is major to remove and change the filters. (Why can't they make them as easy as the oil filter?!??!!) Neither the W164 nor the R320CDI Service DVD's provide complete instructions. It's a matter of removing this to get at that - some of which is intuitive and some of which is not. It'll take me 6-8 hrs before all is said and done. Next time it will probably be 2-3 hrs.

The air filters were so dirty that they were almost sealed over with trash. I'll bet my fuel economy and/or engine power improve with this maintenance.

My recommendation is to let your favorite trusted mechanic do it for you; and, no, I didn't take pictures.

lkchris 11-25-2007 01:17 PM

As an addendum, on the GL320CDI the crossbrace between suspension towers is removed to permit removing the engine cover to get to the filters.

DUTCH 11-25-2007 02:13 PM

Quote:

Originally Posted by lkchris (Post 1684542)
As an addendum, on the GL320CDI the crossbrace between suspension towers is removed to permit removing the engine cover to get to the filters.

Possibly true, but we're talking about an ML320CDI here.

On the ML, there are two covers on the firewall that need to be removed in order to access the air filter housings; and these are not mentioned on the DVD when it comes to the gassers.

DUTCH 03-22-2008 12:32 PM

Quote:

Originally Posted by DUTCH (Post 1683875)
This job is not your average DIY job; and since the air filters have to be removed to access the fuel fillter, it's definitely a job to be done at the same time.

I just discovered that the ECU Adaptation needs to be reset when you change the air filters. Interesting!

All the more reason to let your friendly MB mechanic do the job.

samiam44 04-17-2009 12:41 PM

ECU adapter reset?

Ok- seriously, I've rebuilt engines, replaced evaporator cores(W124)- how hard can an airfilter be?

Please share experience and what is needed to accomplish this task.

DUTCH 04-17-2009 01:07 PM

Quote:

Originally Posted by samiam44 (Post 2177220)
ECU adapter reset?

Ok- seriously, I've rebuilt engines, replaced evaporator cores(W124)- how hard can an airfilter be?

Please share experience and what is needed to accomplish this task.

You basically need to remove two panels on the firewall and dismantle a whole lot of the air intake connections.

As to resetting the ECU, it is an option in the SDS. Not sure what it accomplished. Perhaps M.B.DOC can comment on this.


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