Pressure Relief Valve in Cap, Checking

Fig 1: Checking Pressure Relief Valve In Coolant Reservoir Cap

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the cap in the : VAG1274/9  .

-- Clamp the : VAG1274B/1  in the : VAG1274/9  .

-- Connect the : VAG1274B/1  to the : VAG1274B  using the hose provided.

-- Build up pressure with the 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 the cap.