Alternator Pulley

[opus10583]

Hi,

Caused myself a problem, with a little help, and I'm replacing the alternator with a rebuild.

Got the nut off the old with an impact driver, fairly easy. The old pulley was not keyed; there's a slot for a Woodruff key in the shaft but none in the spacer, nor the fan... No key at all.

1) Tighten to 181ft-lbs? How? Even if it was keyed, 181 ft-lbs?

2) Why is the pulley two halves? What's the gimmick? What's the watch-out?

Thanks,
Mark

[131]

2 piece alternator pulleys are not unusual, they're cheap to manufacture. Where'd 181ft/lbs come from?

[opus10583]

2 piece alternator pulleys are not unusual, they're cheap to manufacture. Where'd 181ft/lbs come from?

Hi,

...Seems sketchy.

The torque value is from the factory manual, page 10-10.
I'm also puzzled by the nut specification, "waxed or oiled"...

[url=https://flic.kr/p/yqtaf7]

Thanks,
Mark

[DieselSpider]

Some fasteners need to be torqued dry however that one in order to clamp correctly appears to require oil or wax on the treads in order to consistantly develope the correct clamping force at the given torque setting.

http://www.jegs.com/i/ARP/070/100-9909/10002/-1

https://www.youtube.com/watch?v=cFbMIkW3w4Q

[opus10583]

Some fasteners need to be torqued dry however that one in order to clamp correctly appears to require oil or wax on the treads in order to consistantly develope the correct clamping force at the given torque setting.

http://www.jegs.com/i/ARP/070/100-9909/10002/-1

https://www.youtube.com/watch?v=cFbMIkW3w4Q

YIKES!

Thanks!

Mark

[DieselSpider]

Gets interesting when you hear and expert on the topic explain the reasons why certain fasteners are to be tightened in a certain manner. The bit on how if you over tighten a bolt and it does not return to its original length mandates that you replace it even though it still looks good was something I had not considered.