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Old 11-18-2019, 05:49 AM   #1
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Automatic Air Tank Drains

Started looking for air leaks as mine will lose air in 24-36 hours to zero. Found 2 of the 3 automatic tank drains leaking. Has anyone rebuilt these, and do you know of an outlet to buy rebuild kits ? Or, do you think just replace them....I know they are not too expensive <$60.

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Old 11-18-2019, 07:01 AM   #2
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Originally Posted by Meames1 View Post
Started looking for air leaks as mine will lose air in 24-36 hours to zero. Found 2 of the 3 automatic tank drains leaking. Has anyone rebuilt these, and do you know of an outlet to buy rebuild kits ? Or, do you think just replace them....I know they are not too expensive <$60.

Attachment 267232
Good troubleshooting.

Please include the year/make/model of your rig so others can answer more intelligently.

My thought is that replacing would be far easier than removing, rebuilding on a bench and then having to crawl back under and install the rebuilt units. Then again, I'm 70 and getting down on the ground and crawling under once instead of TWICE would be worth the $60 (and give me better peace of mind).
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Old 11-18-2019, 07:07 AM   #3
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Good troubleshooting.

Please include the year/make/model of your rig so others can answer more intelligently.

My thought is that replacing would be far easier than removing, rebuilding on a bench and then having to crawl back under and install the rebuilt units. Then again, I'm 70 and getting down on the ground and crawling under once instead of TWICE would be worth the $60 (and give me better peace of mind).
Very smart Advice.
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Old 11-18-2019, 07:18 AM   #4
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Yeah agree with above rebuild kit half price of new probably has white rust at gasket surface . I don't recognize the cover per newer hadex or bendix but this bendix is heated aftermarket heater added 33 bucks maybe unheated even cheaper. I see a small metal tag on bolt those are usually I.D. tag.
https://mpparts.com/part/bendix-2847...-heater-284795
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