Article by: Johan Article applies to: all BMW models with a viscous clutch cooling fan. Problem: It’s very easy to spot a bad fan coupling. The engine temperature will rise when standing in traffic. On my 735i it went to about the 3/4 mark. Apparently the electrical fan on the […]

Article by: John Krawzcyk Article applies to: all BMW models with a viscous cooling fan clutch. These next few pages attempt to graphically demonstrate the Plumley Procedure for rehabbing Porsche 928 mechanical fan clutches. The one shown below is from my 1979 and it typical of the earlier model fan […]

Article by: John Krawzcyk Article applies to: all BMW models with a viscous cooling fan clutch. These next few pages attempt to graphically demonstrate the Plumley Procedure for rehabbing Porsche 928 mechanical fan clutches. The one shown below is from my 1979 and it typical of the earlier model fan […]

Article by: John Krawzcyk Article applies to: all BMW models with a viscous cooling fan clutch. These next few pages attempt to graphically demonstrate the Plumley Procedure for rehabbing Porsche 928 mechanical fan clutches. The one shown below is from my 1979 and it typical of the earlier model fan […]

Article by: John Krawzcyk Article applies to: all BMW models with a viscous cooling fan clutch. These next few pages attempt to graphically demonstrate the Plumley Procedure for rehabbing Porsche 928 mechanical fan clutches. The one shown below is from my 1979 and it typical of the earlier model fan […]

Article by: John Krawzcyk Article applies to: all BMW models with a viscous cooling fan clutch. These next few pages attempt to graphically demonstrate the Plumley Procedure for rehabbing Porsche 928 mechanical fan clutches. The one shown below is from my 1979 and it typical of the earlier model fan […]