The fan can stay.

PS pump -Loosen 3 13 mm bolts/nuts (you will need to use a ratchet with an extension on two of the bolt heads as they are recessed into the rear side of the bracket). Loosen adjusting bolt (should look like a flush bolt head on the top of the bracket) while pressing on the belt to rotate the pump.

Alternator/water pump/fan- loosen 17mm nut on rear side of adjustment bolt (it has a threaded rod for the adjustment nut welded onto the head at a 90* angle) and 17mm bolt at hinge point at the bottom of the alternator. Loosen adjustment nut on front passenger side of alternator.

AC- loosen 3 19mm bolts (it's a pain to access two of them) then loosen adjustment bolt. I can't remember where the adjustment bolt is located of the top of my head, but it should be obvious when you get under the car.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine