924Board.org

Patrick

Happy new year everyone!
As the subject says, what is the correct (safest) orientation of the cotter pin on the rear axle castle nut?

For the longest time i positioned the cotter pin so i could bend both arms of the pin around the circumference of the castle nut (one arm going clockwise, and the othe counterclockwise)).

But this past couple a yrs i`ve been orienting the cotter pin such that i can bend both arms perpendicular to the circumference of the castle nut (one arm going towards me and the other away from me).

What do you guys (or gals) think? THANKS!
patrick
_________________
1979 924 U.S. version
Single sidedraft Weber 40

avaconirl · Joined: 25 Dec 2009 Posts: 48 Location: Ireland

It does not matter once the pin is in so the nut cannot loosen and the pin can't come out.

Patrick · Posted: Wed Jan 13, 2010 10:51 pm Post subject:

Avaconirl- Thanks for your reply!

Any one else? I`m not an engineer but feel free to be technical if you want.
_________________
1979 924 U.S. version
Single sidedraft Weber 40

Slam · Posted: Sat Jan 16, 2010 6:03 am Post subject:

I'm a wrap-around guy. If there's going to be a wheel fit problem, this will help negate it, although I don't think it makes much difference really. Ever try to take a nut off when there's still a piece of cotter pin stuck in the bolt? Sheesh!
_________________
'84 944 - kid blew motor
'83 944 - resting comfortably. For 12 years
'87 944 - sideswiped by trucker
'80 924 - gone
'78 924 - gone
'77 924 - rusting comfortably

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Slam · Posted: Sat Jan 16, 2010 7:45 am Post subject:

Ah yes... Rasta strikes again. Good to see ya!
_________________
'84 944 - kid blew motor
'83 944 - resting comfortably. For 12 years
'87 944 - sideswiped by trucker
'80 924 - gone
'78 924 - gone
'77 924 - rusting comfortably

Patrick · Posted: Sun Jan 17, 2010 12:34 am Post subject:

Ok thanks guys! looks to me like its individual preference. I really havent had any problems orienting the cotterpin either way, its just my sometimes obsessive-compulsive tendencies that make me want to know the better way to do it.

Regardless, anyone know what the porsche factory recommends?
_________________
1979 924 U.S. version
Single sidedraft Weber 40

stevekat · Joined: 19 Jan 2008 Posts: 719 Location: Los Angeles, CA

I split them.
_________________
"Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."

Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's.

avaconirl · Joined: 25 Dec 2009 Posts: 48 Location: Ireland

For the O.C.D.'s amongst us them it has to side to side.

Slam · Posted: Tue Jan 19, 2010 2:50 am Post subject:

^+1 I split them and then wrap the ends around the nut in opposite directions. I should have been more specific.
_________________
'84 944 - kid blew motor
'83 944 - resting comfortably. For 12 years
'87 944 - sideswiped by trucker
'80 924 - gone
'78 924 - gone
'77 924 - rusting comfortably

Patrick · Posted: Wed Jan 20, 2010 8:38 pm Post subject:

Just saw an aviation tech website that said that the "wraparound" method (pins bent to the left and right of the castle nut) was optional, and that the preffered method was bending one prong towards the axle bolt end (towards you when your looking at one side of the car), and the other prong away from you (both prongs then parallel to the rear axel of the car).

I`ve been using the "wraparound" method for yrs with absolutely no problem, but decided to shift to the other method, just because its supposedly better(?) But why would it be better??
_________________
1979 924 U.S. version
Single sidedraft Weber 40