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Genrator Woodruff key(help)
jjwebb123 - September 11th, 2010 at 08:14 PM

Hey everyone.
Had to pull my beetles gen pully off today,last week it was making a ticking noise,and was slowly getting loose.Turns out that the key which sits on the shaft was wearing.When i replaced the bearings a while back we noticed this with the original key,so had to fabricate a new one to match the new shape.Had to do the same again today.It worked,no noise and keeping tight.(not sure for how long)

I cant afford a new gen at the moment.So i was wondering if anyone else has experienced this type of problem ? also (not especially) but are there any products that rid of the key altogether?

The only thing in my engine bay that is not new :lol:

Kind Advice please guys.
Thanks in Advance:blush:


jjwebb123 - September 12th, 2010 at 06:43 AM

bump =)


vwo60 - September 12th, 2010 at 08:37 AM

Hi, You could try loctite super retaining compound in conjuntion with its primer,i think it is number 680, just use it to glue the key into the shaft, if you use it on the shaft you probably would not be able to get apart again.


jjwebb123 - September 12th, 2010 at 09:08 AM

Thanks vwo60 for the reply.
yeh we did think of that,and came to the same conclusion.Wont be able to get it off again if we ever need to.
But thanks.:)


pod - September 12th, 2010 at 03:43 PM

have the woodruff key hole re-cut in the opposite side to the original ,easy if you have the right machinery,either that or get another genny


jjwebb123 - September 13th, 2010 at 12:24 PM

Quote:
Originally posted by pod
have the woodruff key hole re-cut in the opposite side to the original ,easy if you have the right machinery,either that or get another genny


ahh yeh i didnt think of that.dont really have the gear for that tho.
Anyone know what the average price for a genny is?


68AutoBug - September 13th, 2010 at 01:06 PM

Quote:
Originally posted by jjwebb123
Hey everyone.
Had to pull my beetles gen pully off today,last week it was making a ticking noise,and was slowly getting loose.Turns out that the key which sits on the shaft was wearing.When i replaced the bearings a while back we noticed this with the original key,so had to fabricate a new one to match the new shape.Had to do the same again today.It worked,no noise and keeping tight.(not sure for how long)

I cant afford a new gen at the moment.So i was wondering if anyone else has experienced this type of problem ? also (not especially) but are there any products that rid of the key altogether?

The only thing in my engine bay that is not new :lol:

Kind Advice please guys.
Thanks in Advance:blush:



You can get used generators fairly cheap....
every engine had one... lol
heaps are about....

You can buy the original VW woodruff keys..
and You can also buy products to fix this...
loctite etc... holds the key in place....
that's what I would be using...
and they are able to be pulled apart with normal tools..

LEE


jjwebb123 - September 13th, 2010 at 06:46 PM

Thanks lee.
So you think i will be able to pull it apart again,if i do use loctite?
becuase i was thinking of that.
Thanks :tu:


matberry - September 13th, 2010 at 09:42 PM

I don't think the loctite will last long.


vwo60 - September 14th, 2010 at 10:23 AM

Personal experence tells me that it will , as long as the bore of the pulley and the key way in the pulley or the shaft is not worn it will work, this wear happens after the top pulley has been loose, we use all types of loctite in critical area's of hydrocarbon production with no issues, you just have to use the correct product for the application, loctite will not work if there is any trace's of oil or dirt, and works the best when it is used in conjuction with it primer. dont glue the pulley on with the 680 as you will not be able to remove it without the application of heat, just fit the key and let it set and make sure that the pulley is torqued correctly, it worth a try.


jjwebb123 - September 15th, 2010 at 05:40 PM

torqued?


vwo60 - September 15th, 2010 at 07:01 PM

The bolt that holds the split pulley together done up to the factory recommended torque setting, this is done with a torque bar. it is good work practice to torque all of the critical bolts on your car in this manner, it stops things like broken or stripped bolts and warped brake drums occurring when they are over tightened during assembly. have a look in the manual and you will see that a value in neuton metre's or foot pound's
is listed for all critical bolts on your car


OZ Towdster - September 15th, 2010 at 08:27 PM

Have you concidered that the pulley is the faulty part here ??? ie it is now outer shape in it's centre and is constantly moving about on the genny shaft and damaging the woodruff keys as no matter how tight you tighten the nut an eliptical hole is always going to work it's self loose on a round shaft


matberry - September 15th, 2010 at 09:52 PM

Quote:
Originally posted by OZ Towdster
Have you concidered that the pulley is the faulty part here ??? ie it is now outer shape in it's centre and is constantly moving about on the genny shaft and damaging the woodruff keys as no matter how tight you tighten the nut an eliptical hole is always going to work it's self loose on a round shaft


x2


bajachris88 - September 15th, 2010 at 10:17 PM

rumour has it that to remove the 'fastening' properties of any stubborn loctite is to simply apply heat. :tu:


vwo60 - September 17th, 2010 at 06:52 PM

Hi,
In have already addressed that in a previous post and yes small amount of heat will get it apart