Panamera S (970) V8-4.8L (2010)
3. Fit test-gas bottle with pressure reducer and air-spring strut filling unit VAS 6231 WE 1282 securely so that no gas can escape -> Test equipment
setup. Set pressure reducer to max. 10 bar pressure -> Adjusting pressure reducer to between 7 and 9 bar of test-gas pressure.
4. Air-spring strut filling unit VAS 6231 WE 1282 -2- must then be connected to the adapter. Tighten the connection if necessary.
5. Depending on the high-pressure connections that were loosened (removed fuel distribution pipe or removed high-pressure pump), complete the
following steps -->
6. If the fuel distribution pipe (high-pressure rail) was removed -->
6.1. Before screwing the fuel distribution pipe (high-pressure rail) to the engine, quickly blow out residual fuel from the high-pressure pump and
high-pressure line (intake) to the high-pressure rail.
6.2. Apply a quick burst of pressure using the filling unit and blow the residual fuel through the line into a cloth or receptacle. -> Blowing out
high-pressure line
6.3. Drain residual fuel from the high-pressure distribution pipe before fitting it. Shake the high-pressure pipe over a cloth to do this.
6.4. Fit high-pressure distribution pipe (high-pressure rail) and tighten it to the correct tightening torques.
NOTE:
-
Test pressure is exceeded
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Risk of damage to high-pressure pump
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The test gas test pressure must be set to less than -> Pressure: 10 bar on the pressure reducer on the test gas bottle.
6.5. Use air-spring strut filling device VAS 6231 WE 1282 to apply test-gas pressure of between 7 and just under 10 bar to the completely fitted
high-pressure system. The pressure is distributed slowly in the system and can increase slightly on the pressure gauge. If there is a constant
drop in pressure, there is a leak in the system.
6.6. Spray all connection points in the high-pressure system with commercially available leak-locating spray. If the pressure drops even though the
threaded joints are perfectly sealed, also spray the soldered joints and connecting pipes as well as the high-pressure pump and test equipment
with leak-locating spray.