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 > Air ride pin box question

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Bionic Man

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Posted: 08/05/23 10:14am Link  |  Quote  |  Print  |  Notify Moderator

Why would the amount of psi effect the air bleeding out?


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Cummins12V98

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Posted: 08/05/23 04:50pm Link  |  Quote  |  Print  |  Notify Moderator

On my previous DRV I had the same pinbox. I was told on a DRV forum that TrailAir said to pump to 100psi and it should seal whatever was allowing the pressure to drop. I did the suggested and it did worked.

* This post was edited 08/06/23 09:00am by an administrator/moderator *


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Bionic Man

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Posted: 08/05/23 05:17pm Link  |  Quote  |  Print  |  Notify Moderator

Interesting. I haven’t had the same luck. I’m ready to replace the Schrader valve to see if that helps.

* This post was edited 08/06/23 09:01am by an administrator/moderator *

CoMoCo

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Posted: 08/06/23 03:59am Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

Bionic Man wrote:

Why would the amount of psi effect the air bleeding out?


On my previous DRV I had the same pinbox. I was told on a DRV forum that TrailAir said to pump to 100psi and it should seal whatever was allowing the pressure to drop. I did the suggested and it did worked.


Interesting. So you are suggesting fill it to 100 psi and then drop to a lower pressure and it should hold the lower pressure? (The lower pressure being the one where the arrows line up on the shock absorper.)


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Cummins12V98

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Posted: 08/06/23 08:43am Link  |  Quote  |  Print  |  Notify Moderator

You need to air it up to 100psi overnight then do your adjustment after hitching. Give it a try, worked for me.

* This post was edited 08/06/23 09:01am by an administrator/moderator *

CoMoCo

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Posted: 08/06/23 11:56am Link  |  Quote  |  Print  |  Notify Moderator

I will give it a try before our next trip. Thanks for the tip!

CoMoCo

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Posted: 09/28/23 07:23am Link  |  Quote  |  Print  |  Notify Moderator

It's been awhile but we were on the road.

On Thursday, August 17 I aired the pin box up to 98 psi - that's all my compressor would give me! On Tuesday August 22 I went to the storage yard to go on our trip and lowered to 68 psi. We were gone for 4 weeks and the pin box held this pressure except once mid trip - it was down to 64 psi and I topped it back up to 68 psi.

I checked the pressure every couple of days (before we were leaving from a stop) and I was pleasantly surprised that it held the pressure so well. It seems to have worked!


Thanks Cummins!

Cummins12V98

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Posted: 09/28/23 04:33pm Link  |  Quote  |  Print  |  Notify Moderator

You are welcome!!!

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* This post was edited 09/29/23 08:18am by an administrator/moderator *

JKJavelin

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Posted: 09/28/23 05:38pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

You need to air it up to 100psi overnight then do your adjustment after hitching. Give it a try, worked for me.

That's interesting, and I'll try to remember that, although before hitching I air mine up to about 70 lbs, then after hitching up I drop the pressure until the shock is just above mid stroke, usually around 65 lbs. I almost never have to add more pressure during a trip, even when it's a couple of months.
Good to know.


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