I was told to get a new tensioner when I needed to replace the water pump on the TE. Sure enough, the rubber was frayed, I'd have needed one if I hadn't gotten the new one.

With the new visco clutch, this was a $600 water pump....

Good news is that it works perfectly now.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!