Air Brake Leak Diagnostic Procedure

[sledhead]

when replacing air lines or electrical wires on a multi hose , wire unit I find if there is room and I am replacing with all new I cut them off about 2 " from the hub so I never have to number the hoses or wires and this way you know the colour or the right hose or wire  goes to what as it is still attached to the hub ( or what ever you want to call it )

dave