[Winegrower]

Where to start?
Those of you who know Tom and have been to his place are aware of not only his talent but also his capabilities and persistence.    

• Orderly examination of the air lines was the most rewarding method to search for the leaks.
  
• Isolation of the air lines using the 2 gauge air line system shown in Tom's post was helpful.
  
• Steve and Richard's air system maintenance YouTube videos are a good source of information to better understand how to test.
  
• [/url][url=https://www.youtube.com/results?search_query=newell+air+system+maintenance]Newell Air System Maintenance YouTube videos
  
• Understanding the system is essential
  
• Cutting zip ties to expose individual contents of the air line bundles was helpful 
  
• Good hearing is essential, I don't have it so some method of amplification was useful.  Tom had good hearing plus a Whisper ultrasound unit and a stethoscope
  
• A supply of 1/4" and 3/8" compression and push to connect fittings with both 1/4" and 3/8" NPTF threads, both straight and 90 degree, along with unions and plugs are needed.
  
• Some fittings require swivel connections due to locations and may only be available in push to connect style.
  
• If testing larger brake lines even larger fittings will be required. 
  
• A washing machine for grease and grime covered clothes is helpful
  
• If you can fix a mop to your back you'll have a very clean floor when you're done