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Home >> BMW >> 2016 >> Z4 sDrive35is >> Repair and Diagnosis >> External Pages >> Different car >> Section 751 (Cooling System - Repair) >> Coolant, Checking Cooling System >> 17 00 009 Checking watertightness of cooling system (N63 B40/B44 O 1, N74) >> Checking pressure drop in cooling system

Checking pressure drop in cooling system

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Open the sealing cap on the coolant expansion tank. Fit special tools (1) 17 0 101 and (2) 17 0 113 .

Build up GAUGE PRESSURE and wait approx. 2 minutes.

Cooling system is impervious to watertightness if pressure drop is max. 0.1 bar.

Fig 1: Checking Cooling System Pressure Drop Using Special Tools (17 0 101 And 17 0 113)
G08469879Courtesy of BMW OF NORTH AMERICA, INC.
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