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Aux tank air leak?
I’m getting close to getting rid of all my air leaks but this 1 is driving me nuts, both main tanks are holding, But aux tank drops 40 or so pounds over night so I’ve checked all lines at manifold in steer compartment with air gauges separately and the 1 that looses is the 3/8 line from aux tank to water trap at manifold in steer compartment. So I changed PR-2 valve and check valve at manifold no change but it seems between aux tank to water trap it’s loosing air, so looking at air schematics going to aux tank there is a 3/8 air line coming to aux tank with a 75 lb PR-2 valve (no check valve) so air could be leaking backwards till 75 psi till PR-2 valve shuts off? I have acouple more test leak test, Any thoughts? In this picture I’ve got manifold out .
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1 Reply
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2nd manifold back together, now gauge before water separator aired up at back all tanks 120 psi
Jeff and Lindsay
91 Marathon XL
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