wagonmaster2
northcentral oklahoma
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Joined: 02/18/2005
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I have the Midland Purest Air dryer (think that's the description, or is it Haldex) on my 2004 Freightliner chassis that gives me problems removing the air lines. It is held in place by 3 bolts to the frame and the top of it is held down with 4 bolts that must be removed to access the filter. The last time I changed the filter on the air dryer I was unable to remove the air line that is held on with the slip type catch, kind of like the Chinesse finger trap. One of the air lines is just screwed on and no problem but the one with the slip type just wouldn't budge so the filter had to be changed from under the coach which was a real pain. The dryer can be removed from the frame but held in place with the air lines still attached while changing the filter but no fun.
Question is: Does anyone with this arrangement know how to get that one air line loose? It would be so much easier to change the filter if the dryer could be removed out to the work bench, and probably be a lot less apt to get contaminates in it during the filter change. It was impossible to get off 4 years ago so it will probably be double that by now. I know Freightliner tells me they change the filters without even removing the 3 bolts holding the dryer to the frame but I can't imagine doing it that way.
Wagonmaster2
* This post was
edited 02/09/12 08:54pm by wagonmaster2 *
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slemnah
none
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You should have a little ring that you can push in towards the fitting and at the same time pull back on the air line and it should release. Be sure to have all of the air bled out of the system before removing it. To reinstall you just push the hose into the fitting all the way then give it a tug backwards to make sure it have latched.
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cybermechanic
british columbia
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you can just cut the line off which should be plastic and replace the fitting with a brass feral and nut, which you can pick up at any truck shop. those push on fittings give nothing but problems.
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J Walker
Oakton, Va
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My Midland air filter/dryer may be a little different but I just spin off the lower part of the housing to change filters. Once the air is released from the system. I have little trouble spinning the housing off. A strap wrench can be used if needed.
Jim Walker
2000 34' Damon Ultrasport DP
2009 Malibu
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wagonmaster2
northcentral oklahoma
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slemnah wrote:You should have a little ring that you can push in towards the fitting and at the same time pull back on the air line and it should release. Be sure to have all of the air bled out of the system before removing it. To reinstall you just push the hose into the fitting all the way then give it a tug backwards to make sure it have latched.
Guess that's my biggest problem, the little ring just won't move like it should. Didn't know how much to pry, tap, or shove to get it to move and have to be ready to pull out the line at the same time. Kind of a 3-handed problem. By hand only, it just never would move. Didn't know if any thing like PB Blaster would help on something like this. Definitely know about bleeding all the air from the tanks and lines.
I've had the suggestion several times to just cut the line and buy new ends for it, but I'm always just a little chicken about cutting any kind of line that I may not be able to repair back without leaks.
Wagonmaster2
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JetAonly
Ohio
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wagonmaster2 wrote:slemnah wrote:You should have a little ring that you can push in towards the fitting and at the same time pull back on the air line and it should release. Be sure to have all of the air bled out of the system before removing it. To reinstall you just push the hose into the fitting all the way then give it a tug backwards to make sure it have latched.
Guess that's my biggest problem, the little ring just won't move like it should. Didn't know how much to pry, tap, or shove to get it to move and have to be ready to pull out the line at the same time. Kind of a 3-handed problem. By hand only, it just never would move. Didn't know if any thing like PB Blaster would help on something like this. Definitely know about bleeding all the air from the tanks and lines.
I've had the suggestion several times to just cut the line and buy new ends for it, but I'm always just a little chicken about cutting any kind of line that I may not be able to repair back without leaks.
Wagonmaster2
Likely it is just dirt that has just worked its way into the fitting. Apply air and a silicon lubricant while working the release should do it.
2000 Monaco Dynasty
ISC350
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