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Thread: Bleed the ballast bags
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06-18-2021, 02:51 PM #1Junior Member
- Join Date
- Sep 2020
- Posts
- 4
Bleed the ballast bags
2021 Mondo here, trying to figure out how to bleed the air on the bags. Looks like a twist but I can't get it bare handed. Saw some say it's push down, twist, or a twist with a push down underneath. Any help would be appreciated!
2021 Moomba Mondo
1991 Mastercraft Prostar 190 - Sold
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06-18-2021, 03:39 PM #2
There are two types; 1) a cap that is 1/2" high that is meant to be turned and once turned through 50% of its threads will reveal a hole that allows air to vent out allowing you to burp the bag. 2) there is a cap that is maybe 1/8" high that isnt meant to be turned but is supposed to bleed air out via some process but I haven't heard/seen conclusive proof they work that well.
I had both on my bags, which do you have? Any pictures?2021 Mojo, 6.2L Raptor 400/1.76, Acme 3407 15.5x13, G6, Flow3, +6500 lbs ballast
2005 Mobius LSV (sold)
Windermere Lake, B.C., 2800' Elevation
2021 Mojo Mods
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06-18-2021, 04:33 PM #3Junior Member
- Join Date
- Sep 2020
- Posts
- 4
They're probably the half inch ones you're talking about. Similar to the size of 2 liter cap or so, on the rear bags. Not at the boat right now for pics but heading out this weekend. I haven't checked the front bag yet.
2021 Moomba Mondo
1991 Mastercraft Prostar 190 - Sold
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06-18-2021, 04:40 PM #4
The vents also have “Air” printed on them I believe. I had one rear bag on my 21 Mojo I couldn’t get to turn… However on the last time out, and changed my angle and grip and finally got it. Guess you could also try some channel lock pliers if it came down to it.
Sent from my iPhone using Tapatalk ProMatt
2021 Mojo
2016 Mojo (sold)
2012 LSV (sold)
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06-18-2021, 04:49 PM #5
The vents are gray and do have "Air" printed on them.
They are threaded and as @Hayden says, once they are unscrewed about 50% there are two small holes which will allow you to burp the air from the bag.
There are two vents on the bow bag in the Mondo, one on each side.2021 Moomba Mondo
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06-19-2021, 12:14 AM #6
Mine say “Air release” on the top. Try opening them before you begin to fill so there is no pressure against them.
2020 Moomba Mojo
2008 Mastercraft Prostar 197 40th Anniversary
Owner Ness Lake Watersports
Wakemakers “Exact Fit” Bags + Lead = 4,700 ballast
Audio by Wetsounds, MTX, JL Audio, Clarion
15 X 13.00 ACME prop
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06-19-2021, 06:59 AM #7
I use pliers sometimes.....put tape on the teeth as it won't tork on the plastic cap and bites easier.
And what is the deal with these self venting caps? They never have worked......like seriously never. Does wakemakers not get it, or are the tesing them a different way than people use them?2022 MAX
Steamboat,CO