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Fan Belt Pulley

BillMain

BillMain

New member
I thought i should check with my peers on this forum before I go ahead an do real damage.

My fan belt light was intermittently coming on and going off so, I've checked the belts which are OK but not at the correct tension. I have new belts to replace them with so I thought ot would be a straightforward job to change them.
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Unfortunately, the retaining nut has no intention of coming off the shaft and despite liberal use of WD40 it's still refusing to move. There is nothing in the maual to suggest this is a left handed thread is this correct? The next step is to heat the nut to persuade it to release its grip. I'm just glad this wasn't an emergency roadside repair.

Anyone else had this problem?

Bill
 
I asume you mean the nut on the alternator shaft ?

Yes 100% Normal righthand thread, but you will need to use the "splined shaft lock" (L shapped tool with a spline on one end ) that is in the original tool kit to lock and hold the shaft or the yes the nut could be tight. Or you can just use a splined male socket to hold the shaft.
 
You can also purchase the correct splined tool from www.theporscheshop.co.uk (code 5156) £18.79 including postage (last year that is). That nut is easy to remove with the right tool. However, as Ian has pointed out a splined socket is also an option and may well be cheaper.
 
Thanks for the feedback. I am using the correct tool as the complete toolkit is in the car. My concern was how tight this nut actually is and, as I'm more than capable of providing a great deal of force on to the nut, I didn't want to shear any shafts etc.

Back to WD40 or a bit of heat I think.

Cheers

Bill
 
Personly I don't see how WD40 will make an difference to tight nut like this....carefull heat would help or just lock the shaft with the splined tool some how..its obviously "too" tight, as the Porsche rating to tighneing this nut is 50Nm (37ftlb) for the standard hub or with the RS alternator hub fitted its 40Nm (29.5ftlb).
 
Well, got the belts changed but it took some heat and a hammer onto the spanner to free it up. Obviously the previous "mechanic" was related to Desperate Dan and didn't think about taking the nut off in the future.

I've used some dry lubricant that is normally used on brake components and torqued it to the correct level which should make any future work easier.

Bill
 
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