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BJ8 Fan Belt Change

tomnanney

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Changing my fan belt and have not done this is a while. Looks like I need to remove the nut (starting crank nut) on the end of the lower pulley to get the fan belt off.? Any other way to do it.
thanks
 
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vette

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Re: fan belt change on BJ8

I don’t believe you need to remove that nut. I have never needed to. But it is a PITA to get the belt past the pulley and crossmember. You squeeze it thru by rolling the belt and turning the crank. Watch out for the little pink thingies ( fingers) to not get pinched.
 
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tomnanney

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Re: fan belt change on BJ8

I don’t believe you need to remove that nut. I have never needed to. But it is a PITA to get the belt past the pulley and crossmember. You squeeze it thru by rolling the belt and turning the crank. Watch out for the little pink thingies ( fingers) to not get pinched.


Thanks for the input. That's what it looked like to me also, but I was just hoping someone had a trick to getting off.! It is a bugger! Also changed the water pump which was no fun either!!
 

John Turney

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Re: fan belt change on BJ8

Getting the old belt off is easy - just cut it. Getting a new one on is the hard part.
 

steveg

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Re: fan belt change on BJ8

In order to remove the crank nut, you'd have to remove the radiator, loosen the motor mounts and jack up the engine enough to get the belt off anyway.

BJ8 questions: is it the 1/2" belt? Does anyone use those or have they all been converted back to 3/8" belts?

Will the 1/2" belt fit between the crank pulley and crossmember?
 

Bob_Spidell

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Re: fan belt change on BJ8

Only BN4s and BN6s have the 3/8" belt (according to Moss, anyway). Changing belt size would require replacing all pulleys, and the 1/2" belt should be stronger and more durable anyway (possible why the 3/8" was superseded). IIRC, I've been able to R&R my BJ8's belt, but it requires twisting and pulling and potentially damaging the belt. Still, easier than pulling the crank pulley nut.
 

Bob_Spidell

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Re: fan belt change on BJ8

I was incorrect--thanks, Steve--only the later BJ8s have the half-inch belt. OP didn't specify earlier or later BJ8, I think a 3/8" belt wouldn't be much trouble.
 

BJ8Healeys

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Re: fan belt change on BJ8

I was incorrect--thanks, Steve--only the later BJ8s have the half-inch belt. OP didn't specify earlier or later BJ8, I think a 3/8" belt wouldn't be much trouble.

My BJ8 had a 1/2" belt, but when I changed the crank damper to the Pro/Race unit I had to change it to a 3/8" belt. I had to change the water pump pulley to 3/8" also, but not for the alternator. Why? Because the alternator already had a pulley for a 3/8" belt and I had been using it with the 1/2" belt for 20 years without noticing it!

I was always able to get the 1/2" belt off between the pulley and cross-member by judicious twisting and tugging, but even that wasn't easy.
 
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