Wabco 1200 air dryer cartridge question

[hostage]

Does anyone know for sure(without guessing or just personal opinion)
If a Wabco 1200 series air dryer cartridge goes bad based on time but not mileage?? 29000 miles but 10 years old; never if hardly ever used in damp weather conditions;;

many thanks

[sjholt]

Also- Lube that O ring and the threads the can spins on to.

[hostage]

SidecarFlip wrote:

hostage wrote:

SidecarFlip wrote:
The more the system is used (pressurized and heated, because compressed air is hotter than ambient, the longer the change frequency is). Ocassional use (like a Motorhome) decreases the change interval. Reason being is, when the system drops to no pressure, the entrained water vapor condenses in the lines and when the system is pressureized again, that condensed water vapor winds up in the cartridge... Pretty simple really.

got a filter coming its only $38 all in so no big deal
change it and good for another 9 years (last one lasted that long)

When you change it (if the new one don't come with the 'o' ring. Make sure the 'o' ring seal is seated in the housing correctly.

You'll know when you remove the old one if 9 years is feasible or if it was saturated a while ago.

will do thanks;; the picture shows a new o-ring

[DSDP_Don]

Wow.....you have quite an attitude! You came here questioning if you should change a ten year old filter that has a recommended interval of three years, just to save $39.00. Then you have an attitude about the helpful responses. :S

[SidecarFlip]

hostage wrote:

SidecarFlip wrote:
The more the system is used (pressurized and heated, because compressed air is hotter than ambient, the longer the change frequency is). Ocassional use (like a Motorhome) decreases the change interval. Reason being is, when the system drops to no pressure, the entrained water vapor condenses in the lines and when the system is pressureized again, that condensed water vapor winds up in the cartridge... Pretty simple really.

got a filter coming its only $38 all in so no big deal
change it and good for another 9 years (last one lasted that long)

When you change it (if the new one don't come with the 'o' ring. Make sure the 'o' ring seal is seated in the housing correctly.

You'll know when you remove the old one if 9 years is feasible or if it was saturated a while ago.

[hostage]

kdk wrote:
Amazon has them for $39, so why take a chance on damaging some thing way more expensive.

I had previously posted already that I bought one for $38 ??

[kdk]

Amazon has them for $39, so why take a chance on damaging some thing way more expensive.

[hostage]

SidecarFlip wrote:
The more the system is used (pressurized and heated, because compressed air is hotter than ambient, the longer the change frequency is). Ocassional use (like a Motorhome) decreases the change interval. Reason being is, when the system drops to no pressure, the entrained water vapor condenses in the lines and when the system is pressureized again, that condensed water vapor winds up in the cartridge... Pretty simple really.

got a filter coming its only $38 all in so no big deal
change it and good for another 9 years (last one lasted that long)

[SidecarFlip]

The more the system is used (pressurized and heated, because compressed air is hotter than ambient, the longer the change frequency is). Ocassional use (like a Motorhome) decreases the change interval. Reason being is, when the system drops to no pressure, the entrained water vapor condenses in the lines and when the system is pressureized again, that condensed water vapor winds up in the cartridge... Pretty simple really.

[ct1964ups]

hostage wrote:
Just found this by Bendix;;
air dryer cartridge should be replaced every year or 100,000 miles.
For pick up and delivery operations, or for double- and triple-trailer line haul trucks, every two years or 200,000 miles is recommended.
Line haul operations using a single trailer should swap the filter out every three years or 300,000 miles.

so the more use,less you have to change it...motorhome use looks as if it should be changed yearly...I do 17k a year and change every other year

[hostage]

Just found this by Bendix;;
air dryer cartridge should be replaced every year or 100,000 miles.
For pick up and delivery operations, or for double- and triple-trailer line haul trucks, every two years or 200,000 miles is recommended.
Line haul operations using a single trailer should swap the filter out every three years or 300,000 miles.

[hostage]

SidecarFlip wrote:

hostage wrote:

SidecarFlip wrote:
Just because you don't operate in damp / humid conditions has nothing to do with the cartridge getting saturated. It has to do with compressed air and the dew point of it.

When you compress air, it raises the dew point (holds more moisture) so the filter pulls that moisture off no matter what the ambient humidity is.

Replace it. It. It's saturated.

thanks for your opinion

Not an opinion at all. Fact. I drove and owned a number of over the road trucks and SOP was dryer cartridge replacement. It's very important to pull out the entrained moisture or it will gum up your works down line.

yes thanks very much and understood but only 29K miles;;; I know my last MH I changed it at 40K miles and after 8 years and the system looked like new that's why iam asking for real life experience and opinions;; what was the mileage on your filters as you were changing them>/?

[SidecarFlip]

hostage wrote:

SidecarFlip wrote:
Just because you don't operate in damp / humid conditions has nothing to do with the cartridge getting saturated. It has to do with compressed air and the dew point of it.

When you compress air, it raises the dew point (holds more moisture) so the filter pulls that moisture off no matter what the ambient humidity is.

Replace it. It. It's saturated.

thanks for your opinion

Not an opinion at all. Fact. I drove and owned a number of over the road trucks and SOP was dryer cartridge replacement. It's very important to pull out the entrained moisture or it will gum up your works down line.

[hostage]

SidecarFlip wrote:
Just because you don't operate in damp / humid conditions has nothing to do with the cartridge getting saturated. It has to do with compressed air and the dew point of it.

When you compress air, it raises the dew point (holds more moisture) so the filter pulls that moisture off no matter what the ambient humidity is.

Replace it. It. It's saturated.

thanks for your opinion

[SidecarFlip]

Just because you don't operate in damp / humid conditions has nothing to do with the cartridge getting saturated. It has to do with compressed air and the dew point of it.

When you compress air, it raises the dew point (holds more moisture) so the filter pulls that moisture off no matter what the ambient humidity is.

Replace it. It. It's saturated.