Engine, cooling 911 Carrera (996) · Checking the cooling system for leaks

Engine, cooling 911 Carrera (996) Checking the cooling system for leaks Note Perform the leak test only on a cold engine. 1. Removecap and attach tester. J\>: {I- /J / -4) / Vi / \. / 19010002 "11 Test, two-step cap Part number 996 106 447 00 1. Generateexcess pressure (step 1) 19010003 2. The pressure relief valve opens at an excess 2. Pump the cooling system up to an excess pressure of approx. 1.4 bar; the pressure pressure of 1.3 bar. then slowly decreasesagain, and the valve If the pressure decreases,locate the leak and closes at 1.0 bar. If the pressure decreases remedy the fault. further, replace the cap. Check pressure relief valve(s)in the cap. 3. If the test pressure of step 1 is maintained, Screw the tester I adapter and cap together. test step 2. Apply excess pressure to the pressure relief valve of step 1 by pumping rapidly. The pressure relief valve of step 2 must open at an excess pressure of approx 1.8 bar. If the valve does not open, replace the cap. -,,~~