Pressure Relief Valve in Cap, Checking

Fig 1: Connecting Connector Piece VAG1274 B/1 To Cooling System Tester VAG1274 B Using Connecting Hose

Courtesy of AUDI OF AMERICA, LLC

-- Position the Cooling System Tester VAG1274B with the adapter VAG1274/9 on the cap.

-- Generate pressure with cooling system tester hand pump.

• The pressure release valve must open at 1.4 to 1.6 bar (20.30 to 23.20 psi).

-- If pressure relief valve does not open as specified, replace cap.