How To Guide Change serpentine belt without removing viscous fan?

[Meldrew]

Looking at serpentine belt replacement on my Z3 1.9, but how can I replace without removing viscous fan?

 

[jonco]

It can be done but is very fiddly and depends on which type of tensioner is fitted. Tensioner is just behind fan blades. Taking the viscous fan off is relatively easy - you just need a 32mm flat open jaw. This photo is with rad removed which you don't have to do on the M44.

 

[Rudyrov]

View: https://www.youtube.com/watch?v=50z3aNQ5NJ4

 

[Nodzed]

Large flat screwdriver to jam on the housing bolts to hold everything tight and a 32mm spanner, its a left hand thread, watch you don't lose some skin when the screwdriver slips. My advice? Buy the correct tools to remove the fan they are about £12 on eBay and will come in handy in the future

 

[Andyboy]

With time the spring loaded tensioner can weaken as well leading to belt 'chirp' or squealing even with a new belt. I've fitted a 10mm shorter belt to cure this.