Rear Coolant Pipe, Removing And Installing: Installing

Install In Reverse Order Of Removal. Note The Following: 

Pay attention to the tightening sequence (leaks due to installing the coolant pipe under stress):

• First tighten the bolt -2- to 10 Nm. 
• Then tighten the nut -3- to 10 Nm. 

  Courtesy of AUDI OF AMERICA, LLC

-- Fill and bleed the coolant circuit. Refer to COOLANT, DRAINING AND FILLING WITHOUT COOLING SYSTEM CHARGE KIT - ELECTRIC VACUUM PUMP:VAS6096/2 .