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Old 01-09-2022, 05:17 PM   #1
Skoolie
 
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Year: 1999
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Chassis: Saf-T-Liner MVP ER
Engine: CAT 3126
Question Crimping Air/Pneumatic Hoses: Please Help

I would like to add a female fitting to an air hose for reasons outlined in another thread.

The attached photographs show the type of fitting already used on the bus. I cannot find a name much less a how-to for these fittings. There is nothing special about them. I see them on trucks all the time.

That said, I have never had to crimp one before. Can someone please point me in the right direction? I just need a female end with a retaining ring/ball.

Thank you.
  1. Retaining Ring∕Ball (Crimped)
  2. Female End Over Ring∕Ball
  3. Female End (Right) Fastened to Male-Male Coupler (Left)
Attached Images
File Type: jpg 1 Crimp Ring∕Ball.jpg (61.8 KB, 7 views)
File Type: jpg 2 Female End Over Ring∕Ball.jpg (30.5 KB, 6 views)
File Type: jpg 3 Female End (Right) Fastened to Male End (Left).jpg (16.7 KB, 6 views)

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Old 01-09-2022, 05:40 PM   #2
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What you are looking at is a standard compression fitting for air line. Any NAPA or similar store will have them in stock for 2-4 bucks a piece. The process to replace this fitting is to... 1) undo the nut in picture #2, 2) cut air line behind the furl (its a self crimping compressed by you tightening the nut onto the threaded fitting). Remove fitting shown in back ground of pic #2.
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Old 01-09-2022, 05:51 PM   #3
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also your HALADEX air valve has push in (built in connectors. Clean & straight cut on the end of your air line, then insert into the hole on the valve. It will hold and seal on its own. To remove these there is a small coller "ring" where you inserted the line...push the line in a fraction of an inch and push in the ring as far as you can. Work the line " twist back & forth" while pulling the line out. It'll come out and you can re-use that port or line with no issue.
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Old 01-10-2022, 06:15 PM   #4
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Thumbs up

Thank you for sharing precisely the info I needed. I really appreciate it. I will head off to the parts store and post a followup.

The “new” height-control valve (Haldex 90054007) does not seem to have push-in connectors as you describe. The brochure for the old, cracked one (Haldex 612 series) seems to feature a photo of them on the front cover, though. Is that what you refer to? I attached photos of what I have on hand (cracks and all).

Quote:
Originally Posted by PoppaSmurff View Post
... its a self crimping compressed by you tightening the nut onto the threaded fitting.
No special crimping tool needed? Nice!
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Old 01-10-2022, 10:05 PM   #5
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Hi Marceps,

I'm a big fan of adding an air chuck, but it's important to do it properly. That green line should be part of your primary brake system. I made a video showing the two different types of fittings (compression and PTC) and what needs to be done to add accessories safely: https://youtu.be/9xeW530SJH8
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Old 01-12-2022, 05:20 PM   #6
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Your video looks to be right up my alley (and timely)! Thank you. I'll watch it next time I connect to Wi-Fi...
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Old 01-14-2022, 11:16 PM   #7
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Talking

Update: Having spent several afternoons online searching far and wide for a ⅛ NPT ↔ ⅜″ OD air-line male/male adapter (another piece to this puzzle), I walked into O'Reilly's, and they sell the exact part plus a female end and a compression-fitting hose collar as a single item.

If this place were a church, I would come here to worship.
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