11-06-2017, 06:35 AM
Hello to everyone and thanks for warm welcome !
I am looking at getting the air brake /suspension systems working properly on the 86 , coach #89. After the 700 mile initial trip home I noticed an oily spray on the side of the muffler . No oil evident in exhaust exit . Turns out the copper tubing coming from the air dryer /heat exchanger vent was routed into a hole in the side of the muffler . The tubing had broken just outside the muffler and was spraying the air dryer exhaust on the side of muffler . The compressor builds air in about two minutes or so , but I was concerned about it blowing oil into the system . I went through the air dryer ( CR Brakemaster Model 68 ) and found a film of " oily water " . No dirty, black oil , only what you would would have with a small amount of water with a few drops of clean oil . No liquid actually standing , just a film. No "black " oil in tube either . The dryer has been cleaned and serviced with new check valve and dump valve kits from SKF . Have not reinstalled yet .
I am trying to find the air tanks and drains . Located a vertical tank , driver's side forward of bellhousing , with a drain cock . Hardly a drop came out , but I now believe this is the catch tank for the air box drains . I have now found a drain cock on what appears to be a lateral frame member ? It's forward of the trans and looks to have lines coming out the top heading to the rear brakes , etc. I did not get a look at the top , only the bottom . Drain cock looks to be plugged with dirt , probably last drained during Reagan's State of the Union address. Have not attempted to open this valve yet . I found drain cocks toward the front , two for the fuel /water separators and one in a rectangular box below the main fuel tank . I must be missing something somewhere .
Coach drives very well ( the thing that sold me ) , feels level on the road and stands right up soon after start up . However , the driver's side lowers after being parked for a few hours , seems to be worse at the rear . I will chase down the leak , but the 120 v compressor doesn't work . There is no voltage going into the compressor , not sure if there is a switch somewhere or if it's because I have the coach connected to a 30 amp power source at the moment.
There are two female quick connects , one at the compressor ( forward of driver's front wheel ) and one in passenger engine bay that's connected to manifold(s) , electric/air solenoids , a gauge and blue tubing . I'm thinking I can connect one of these to air line from shop and start chasing the leak(s).
Any insight will be greatly appreciated , apologies for wordy description..
Hope everyone is having a grand old time out there ,
Thanks ,
Chris
I am looking at getting the air brake /suspension systems working properly on the 86 , coach #89. After the 700 mile initial trip home I noticed an oily spray on the side of the muffler . No oil evident in exhaust exit . Turns out the copper tubing coming from the air dryer /heat exchanger vent was routed into a hole in the side of the muffler . The tubing had broken just outside the muffler and was spraying the air dryer exhaust on the side of muffler . The compressor builds air in about two minutes or so , but I was concerned about it blowing oil into the system . I went through the air dryer ( CR Brakemaster Model 68 ) and found a film of " oily water " . No dirty, black oil , only what you would would have with a small amount of water with a few drops of clean oil . No liquid actually standing , just a film. No "black " oil in tube either . The dryer has been cleaned and serviced with new check valve and dump valve kits from SKF . Have not reinstalled yet .
I am trying to find the air tanks and drains . Located a vertical tank , driver's side forward of bellhousing , with a drain cock . Hardly a drop came out , but I now believe this is the catch tank for the air box drains . I have now found a drain cock on what appears to be a lateral frame member ? It's forward of the trans and looks to have lines coming out the top heading to the rear brakes , etc. I did not get a look at the top , only the bottom . Drain cock looks to be plugged with dirt , probably last drained during Reagan's State of the Union address. Have not attempted to open this valve yet . I found drain cocks toward the front , two for the fuel /water separators and one in a rectangular box below the main fuel tank . I must be missing something somewhere .
Coach drives very well ( the thing that sold me ) , feels level on the road and stands right up soon after start up . However , the driver's side lowers after being parked for a few hours , seems to be worse at the rear . I will chase down the leak , but the 120 v compressor doesn't work . There is no voltage going into the compressor , not sure if there is a switch somewhere or if it's because I have the coach connected to a 30 amp power source at the moment.
There are two female quick connects , one at the compressor ( forward of driver's front wheel ) and one in passenger engine bay that's connected to manifold(s) , electric/air solenoids , a gauge and blue tubing . I'm thinking I can connect one of these to air line from shop and start chasing the leak(s).
Any insight will be greatly appreciated , apologies for wordy description..
Hope everyone is having a grand old time out there ,
Thanks ,
Chris
1986 #89
VIN 007
Detroit 8V92 TA 475 HP
Allison four speed
Chris and Sharon Hand