mackdump600@yahoo.com Posted December 17, 2020 Share Posted December 17, 2020 Hi I have a 70 r608 707 gas job never built much water in the tanks started running a little bit 3- 400 miles over a month starting get a lot of oil in the air tank is there a valve or something in the compressor head could be passing oil through could use some good advice thank you Quote Link to comment Share on other sites More sharing options...
Hayseed Posted December 17, 2020 Share Posted December 17, 2020 Engine Oli is getting past the Cylinder rings on the Compressor piston.. Time to either rebuild the Compressor or get a New/Exchange one.. Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment Share on other sites More sharing options...
Swishy Posted December 17, 2020 Share Posted December 17, 2020 keep draing all the airtanks more often let all the tanks drain ovrnight fit taps to drain tanks also aircleaner may need a clean when the compressor cuts out @ 120psi the compressor pistons Rfree wheelin & can suk the oil up past the piston rings n then it gets blown down into the tanks the above can happen if the engine & compressor use the same aircleaner BIDS2BC cya Quote Link to comment Share on other sites More sharing options...
Freightrain Posted December 17, 2020 Share Posted December 17, 2020 Been there. Mine would make milkshakes in the tank! Rebuild or replace compressor. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Quickfarms Posted December 17, 2020 Share Posted December 17, 2020 When I first went to drain the air tanks on my 1975 R685 I found that the passenger side tank had a quick disconnect in the tank where the drain should have been. what a mess came out of the tanks on that truck. There was even oil behind the dash and above the headliner due to an air leak at the air horn valve. I would check the air filter and drain the tanks daily to see if this is a real problem or something you can live with does the truck have an air dryer on it? Quote Link to comment Share on other sites More sharing options...
Freightrain Posted December 18, 2020 Share Posted December 18, 2020 17 hours ago, Quickfarms said: what a mess came out of the tanks on that truck. There was even oil behind the dash and above the headliner due to an air leak at the air horn valve. Yup, the back of my dash was grimy with oil/dirt from the my air wiper switch. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Quickfarms Posted December 18, 2020 Share Posted December 18, 2020 9 hours ago, Freightrain said: Yup, the back of my dash was grimy with oil/dirt from the my air wiper switch. Mine is grimy behind the Parking brake release Valves 1 Quote Link to comment Share on other sites More sharing options...
Kettie Brie Posted February 2, 2021 Share Posted February 2, 2021 Well done, u rly helped me! Quote Link to comment Share on other sites More sharing options...
Joey M Posted July 18, 2021 Share Posted July 18, 2021 my 05 mack is building up to much air pressure and blowing water hoses and oil in my air tank what can this be? Quote Link to comment Share on other sites More sharing options...
Hayseed Posted July 18, 2021 Share Posted July 18, 2021 What Water Hoses are you Blowing.? 1 Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment Share on other sites More sharing options...
Onyx610 Posted July 18, 2021 Share Posted July 18, 2021 Is the air dryer purging? Any recent repairs to the air system? Quote Link to comment Share on other sites More sharing options...
Steeeveee Posted September 6, 2021 Share Posted September 6, 2021 Hey! Nice thread! Thanks for it! Quote Link to comment Share on other sites More sharing options...
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