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Old 06-05-2018, 10:44 AM   #1
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Air Dryer Filter Stuck

Good day Fellow Newmar Owners,
I am a DIY guy and try to perform most maintenance items.
I have a 2008 Kountry Star with an Cummins ISL 400HP engine. Recently, I tried to install a new filter on the air pump (i.e. Air Dryer Filter). Using a 1/2 drive extension and ratchet along with a "persuader" (i.e. 24 inch piece of pipe) on the end of the ratchet, I tried to remove the old filter. NO GO, even with an enormous amount of forced used. I have to believe that this is the "original" filter since it is stuck and does not want to budge. Note: the air was completely out of the system. I rechecked it using the schrader valve on the air dryer assembly.
I would like to try to remove the filter without taking the assembly off and using "other means" (i.e. cutting or using a chisel) on the filter.
Any insight from the DIY community would be appreciated.
Best Regards
Dutch Master
2008 Newmar Kountry Star 3960, ISL 400HP, 2014 Chevy Captiva
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Old 06-05-2018, 10:49 AM   #2
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I recently could not get mine to budge(broke 2 cheap strap wrenches). I finally gave up and went to a truck shop. It took him 10 minutes to remove the old filter and install a new one (kept my new one for a spare). He only charged $22 for the filter and installation. Easiest way I found.
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Old 06-05-2018, 02:06 PM   #3
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Quote:
Originally Posted by Dutch Master View Post
Good day Fellow Newmar Owners,
I am a DIY guy and try to perform most maintenance items.
I have a 2008 Kountry Star with an Cummins ISL 400HP engine. Recently, I tried to install a new filter on the air pump (i.e. Air Dryer Filter). Using a 1/2 drive extension and ratchet along with a "persuader" (i.e. 24 inch piece of pipe) on the end of the ratchet, I tried to remove the old filter. NO GO, even with an enormous amount of forced used. I have to believe that this is the "original" filter since it is stuck and does not want to budge. Note: the air was completely out of the system. I rechecked it using the schrader valve on the air dryer assembly.
I would like to try to remove the filter without taking the assembly off and using "other means" (i.e. cutting or using a chisel) on the filter.
Any insight from the DIY community would be appreciated.
Best Regards
Dutch Master
2008 Newmar Kountry Star 3960, ISL 400HP, 2014 Chevy Captiva
I used a good quality strap wrench along with a air chisel. While putting pressure on the filter wrench use air chisel to tap at the base of the filter in the counter clockwise direction.
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Old 06-07-2018, 01:53 PM   #4
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Mine hadn't been replaced since new in 2005 just a few weeks ago. A quality strap wrench with a metal handle, and the strap at the non-threaded side where it can accept more torque is how I got mine to break free.
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Old 09-19-2018, 11:43 AM   #5
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Hello All & Especially MarkK
I had a quality strap wrench already. I looked at a couple of videos about this subject on YouTube and noticed the mechanic used an extremely long breaker bar. I did not want to invest in a very long breaker bar, but had a very long 3/4 inch piece of pipe laying around to use as a leverage - i.e. persuader. Using a standard 1/2 inch breaker bar and the persuader on the end, I attached the strap wrench on the filter can - i.e. opposite of the screw end (Thanks MarkK for the tip) and applied force to it. It started to move! Once I had enough turns on it, I simply used the breaker bar to remove the filter. Easy Peasy!
Best Regards
Dutch Master
2008 Newmar Kountry Star 3960, Cummins ISL 400HP, 2014 Chevy Captiva
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Old 09-19-2018, 05:09 PM   #6
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Hi Dutch Master,
Welcome to the club. The last filter I removed I had to drill a hole all the way through the filter. Put a 3/4" steel rod in the hole. Put a longer rod and my SIL and me pushing on the rod got the filter to move. This is the last one I will do myself. I'm getting too old for this.
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Old 09-19-2018, 06:39 PM   #7
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I haven't looked at any specs...but why are these filters put on so tight? Is that what it takes that they don't leak? So, when we put a new one back on - how tight?

I had to replace the air dryer and it came with a new filter so I haven't had the fun of removing it yet. Thankfully it is very accessible - which others have posted theirs are not.
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