Pressure Relief Valve In Cap, Checking

Fig 1: Attaching Cooling System Tester V.A.G 1274 With Adapter V.A.G 1274/9 On Sealing Cap

Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Install the cap to the adapter V.A.G 1274/9 and the cooling system tester V.A.G 1274.

-- Operate the hand pump.

• The relief valve must open at 1.4 to 1.6 bar.