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Fuel Filter Location Question

December 12, 2024, 09:52:30 am

Our coach had the fuel filter  / primer replaced with a Racor 790R30 in the spring by the PO. 

It does not have much travel time / miles on it yet.  While prepping for some other battery bay refresh items I was looking at the unit and was a little surprised how close the plastic sight bowl was to the CAC inlet pipe, maybe 3/4 to 1" away.  I'm assuming this used the mounting location of the original filter.

For others that have changed to a different setup, is this where yours is located as well?  Is it to close to the CAC inlet pipe or should it be fine?

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Re: Fuel Filter Location Question

Reply #1 – December 12, 2024, 10:44:04 am

Steve,

I'm certainly not an expert but....  The CAC inlet pipe will certainly be warm/hot but it's not hot like the turbo exhaust.  I would think that the air gap between them (which will have some airflow) will help a lot.  Also, the fuel flowing through the filter should also provide cooling to the plastic bowl. 

You could always wrap a little insulation around the filter.  Even a sheet metal baffle or sleeve would make a difference.

I wouldn't worry about it until you don't have any other projects to work on ;-).

Rich

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Re: Fuel Filter Location Question

Reply #2 – December 12, 2024, 10:57:46 am

I think I would move it away as you want to keep the fuel cool.

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Re: Fuel Filter Location Question

Reply #3 – December 12, 2024, 02:32:21 pm

I don't think it should be a issue.
The easiest solution might be is to just wrap some insulation around the pipe by the filter.

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Re: Fuel Filter Location Question

Reply #4 – December 12, 2024, 02:35:26 pm

Is that the pipe from turbo to CAC or from CAC to intake. 

If the latter, temperature should not be a lot above ambient temperature-- that is the function of the CAC.

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Re: Fuel Filter Location Question

Reply #5 – December 12, 2024, 03:54:25 pm

It will be the one from the turbo.

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Re: Fuel Filter Location Question

Reply #6 – December 12, 2024, 04:38:46 pm

Quote from: oldguy – December 12, 2024, 03:54:25 pm

It will be the one from the turbo.

Then agree, cooler location (particularly if combined with an easier location to service) is a good idea.

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Re: Fuel Filter Location Question

Reply #7 – December 12, 2024, 07:36:03 pm

Steve,

That is where that filter ends up if you use the original holes from the old filter. The heat for that filter hasn't been a problem but having to change it (the filter) on the side of the road when it is near 100 degrees is a problem with the changer (you) Lot better location is on the right hand frame rail just in front of the A/C compressor. This location lets you stand up to do the change and lot less mess.

Mike

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