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AndrewMac85

Serpentine Tensioner pulley bolt stripped

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hey guys,

 

I decided to change the whole tensioner assembly as it looked pretty knackered. I read that I should use a torx 50, with a breaker bar, lefty loosy. This thing is hard on, and my attempts to take it off have damaged the thread of the bolt.

 

Do you think I should:

 

1. Attempt to hammer in a larger 55 bolt and keep at it.

2. Attempt to cut apart the pulley to expose the bolt.

3. Attempt to pad the inside of the bolt for resistance?

 

I'm worried about causing too much damage as this goes into the chain cover, and I really wont want to have to replace that. What do you guys think?

 

 

Andy

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Get a friendly welder to weld a nut on

 

Sent from my Nexus 10 using Tapatalk

 

 

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you've damaged the head, not the thread.

 

I would try a T55 in it, difficult to tell with the angle of it, but a Nut-grip may work if it has a square socket head.

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What about using a dremmel or angle grinder to cut a slot into it and see if you can get a flat headed bit or screw driver into it?

 

Not a lot of room I know, just another idea

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never found that approach to work ever, not enough purchase, smashing it round with a chisel in the groove you've cut can work though.

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 If you've got the room, grind the head off the bolt, pop the tensioner off and then the rest of it will probably wind out by hand as there is no longer any resistance on it. If not, get a set of grips on it....

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On 06/10/2017 at 11:57 AM, welshpug said:

smashing it round with a chisel in the groove you've cut can work though.

 

+ 1 even without grinding a slot in it, knocking it round with a punch or drift can break it loose. I'd go in where the writing is with a sharp nosed punch, once you've got a nice indent start canting the punch over and driving the bolt round. The torque/shock should hopefully break it loose.

 

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