Cv shaft bolts

04 jetta bew 5 speed what size are the cv shaft flange bolts those tripple square bolts and the end nut

thanks wayne

Mine is stamped M8. Go EASY on the torque.....30 ft lbs.

Flange bolts are 10mm. Axle nut is 30mm.
A question I have is, are the flange bolts TTY?

im not sure if they are tty
thanks for the info

wayne

Yes they are TTY. 12 point 8x50mm.

http://www.worldimpex.com/parts/bilstein-cv-joint-bolt_4669.html

The wheel nut is also a use once sorta deal.

I read somewhere on here that O'reilly auto had the 12 point tool set for these bolts! Does anyone know the part number? I was hoping to do my inner cv boot this weekend.

2jettasinthedrive said:

Mine is stamped M8. Go EASY on the torque.....30 ft lbs.

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are you sure ? I think it's more than that. the bolts can be reused , the axle nut needs to be replaced

Dimitri16V said:

are you sure ? I think it's more than that. the bolts can be reused , the axle nut needs to be replaced

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Bentley Manual saids they are TTY and need to be replaced

vflflyer said:

Bentley Manual saids they are TTY and need to be replaced

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Yes, but it's almost never done on this side of the Atlantic... in many decades of VW ownership, the only time those bolts have ever been replaced on any of my cars was when I brought my own bolts to the mechanic... Now, in Germany: if the mechanic doesn't replace both the CV-joint bolts AND the plates that go under them, he's likely to get fired...

Make sure you politely(?) hammer the triple-square bit into the socket head of those bolts... that might help prevent them stripping out on you... I'd also go a little tighter than 30 Ft*Lbs... (tighten in a criss-cross pattern...)

Yuri

ymz said:

Yes, but it's almost never done on this side of the Atlantic... in many decades of VW ownership, the only time those bolts have ever been replaced on any of my cars was when I brought my own bolts to the mechanic... Now, in Germany: if the mechanic doesn't replace both the CV-joint bolts AND the plates that go under them, he's likely to get fired...

Make sure you politely(?) hammer the triple-square bit into the socket head of those bolts... that might help prevent them stripping out on you... I'd also go a little tighter than 30 Ft*Lbs... (tighten in a criss-cross pattern...)

Yuri

Click to expand...

Thanks for your input and advise! I was wondering if I was suppose to tighten in a criss-cross pattern or not.

vflflyer said:

Bentley Manual saids they are TTY and need to be replaced

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This is something the Bentley manual appears to be inconsistent on. My Bentley manual makes no mention of replacing the 8 mm tripple square inner CV joint bolts in the text, nor on the parts diagram. I have reused mine two times on one side and three times on the other. No issues at all, but I think next time I may replace them.

I do not believe the Bentley manual I have for my mother's 2000 Jetta TDI mentions relplacing them either.

--Nate

I've never seen any credible reference to them being TTY bolts except in this forum.

However, if you insist on over-torquing them, you will certainly need to replace them, and possibly prior to any planned maintenance.

In general, a TTY bolt has a torque value and then an additional degree turn after the torque value is reached. The torque value will seat the bolt, and then the additional turn provides the stretch. Once stretched, a TTY bolt cannot be reused.

Axle nuts can be reused, but VW will disavow you if you do. It is more a corporate liability thing than a nut that might come loose thing. I've never heard of anyone's axle nuts coming loose when properly torqued. Some people insist on using locktite (red) on them, however. But they're not expensive, so if you want to replace them every time, the local parts guys will be very happy to keep selling them to you.

Do you think you can use a T40 instead of the serrated wrench for these bolts as I am having a hard time finding this tool locally? I am trying to get everything I need before the weekend.

The Bentley manual says replace number 14, but I can't seem to find the degree of turn after the specified torque of 30 ft lbs.

No additional turn past 30 Ft*Lbs - I just add a little "extra"... (I guess I'm insecure...)

You should be able to find triple-square (XZN) bits at most Auto-Zones (Lisle brand???) or perhaps a better-stocked Sears... Maybe even Harbor-Freight... I wouldn't mangle the boltheads with a Torx driver... they tend to strip even when you use the proper tool...

Yuri