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My compressor had a scuzzy 1" tube to the old oil-bath air filter setup.  My new air filter just has a 90 degree rubber elbow direct into the turbo, and doesn't have a great place to put a hole and tap for a tube off to the air compressor.  Is  there another way to do this, maybe with a dedicated small filter for the air compressor?  What have people done?  I was thinking of a little clamp on filter or something like that.  Any ideas?

Thanks, Brian

A good truck supply will have or can order you the dry filter with the base I used a Haladex with the bolt through the middle I never had much luck with the clip type

good luck

I plumbed mine off the turbo discharge. Great filtered air. Good idea, until I saw the pressure top 140# before cutout. Bad governor was the first thought. Then after the downhill and a brake application to cutin pressure everything was normal.  Hmmmm?  Then the lightbulb  came on. Next hill I fanned the brakes to cutin pressure. And viola! back to 140# and the boost about 15#. Moral of the story - turbo discharge is not the correct place for the compressor inlet air source

Installed an outside compressor mounted air filter. Rectangular box with a center bolt and an inexpensive filter inside at the local junk yard  for about $10.

Bill

Mine has a dedicated air filter on the 6V92. Remote mounted with a hose to the comp. I can look at the filter for a number if you like.

On the 4-71, the comp. gets its air from the dry air filter housing.

JC

Quote from: Bill B /bus on September 05, 2011, 04:10:06 PM
I plumbed mine off the turbo discharge. Great filtered air. Good idea, until I saw the pressure top 140# before cutout. Bad governor was the first thought. Then after the downhill and a brake application to cutin pressure everything was normal.  Hmmmm?  Then the lightbulb  came on. Next hill I fanned the brakes to cutin pressure. And viola! back to 140# and the boost about 15#. Moral of the story - turbo discharge is not the correct place for the compressor inlet air source

Installed an outside compressor mounted air filter. Rectangular box with a center bolt and an inexpensive filter inside at the local junk yard  for about $10.

Bill

Bill actually many newer buses/trucks are set up exactly that way! (but they have low compression compressors too!)
;D  BK  ;D

Yes, lots of turbo fed air compressors now.

reduces the parasitic loss of pumping the air from ambient pressure.

Now, as to whether something has become non-functional to allow the higher pressures...?

I had seen the same phenomenon in many "D" model coaches in service with a first line fleet over those years without thinking about it much until now.

happy coaching!
buswarrior

You see it on the N/A DD the compressor tied into air horn on top of the blowers was DD factory hook up some here say it won't work but it does

good luck