Why is my alternator fan chewing into my idler bracket????

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Everything LOOKS right!

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http://coffeewithJesus. homestead.com/web1.html 89 1-ton, Amsoil System 3000 5-30,K&N air filter, cleaned-up exhaust, Dynomax straight-thru, rebuilt pump, 12cm wastegated turbo, thermostaticly controlled twin 14" electric fans, intercooler, modified 518 OD transmission, Gear vendors OD controler, R-134, louvered fenders, 93 aftermarket smoothe grille; 78 35'Avion, 93 Lance 900 slide in with generator and power jacks. Jesus saves!

 

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Detension or remove the drive belt and check the idler pulley bearings. They may be on their way out and are misaligning the pulley. This happened to my neighbour's '92 W250 with only 95,000 km <60,000 miles on it.

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Ian.

'93 D250 ext. cab. Upgraded injectors, 3. 5" exhaust, K & N filter, Xmsn oil cooler and fan, 4 gauge mount, mirror tubes reversed, RACOR fuel filter, larger transmission oil pan.

 

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Had a similar problem three years ago on my 89. I kept hearing a ringing noise from the alternator fan, king of like a repetitave "KACHING" noise. The problem was the rear bearing in the alternator was worn as well as the housing it sets in. I took the alternator to a shop to have the bearing replaced, but it only lasted three months before the alternator quit working. 179. 00 bucks and a new (remanufactured)alternator solved this problem.

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89 D-250 LE 5 speed 3. 55 Limited slip, K&N, straight piped, Boost/Pyro. & 16cm2 215K and still going. 91 W-250 5 speed, 4. 10 Limited slip, 16cm2, 6" Skyjacker lift, RS9000, Dump bed, 18K original mi.

 

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Thanks. I'll check both possibilities tommorrow.