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General Category >> Rubber Side Down! >> head cover bolt problems
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Message started by Bobbert on 06/19/09 at 19:43:25

Title: head cover bolt problems
Post by Bobbert on 06/19/09 at 19:43:25

I'm taking off my head cover. Using the Clymer as reference, the top L60 bolt on the right side just will not budge.

- It ate up my 10mm socket first.
- I tried using the 10mm cresent, no luck. bolt showed signs of rounding
- After several soakings in WD-40, I tried again, remembering that sometimes bolts will loosen after being tightened. Not this one.

I also found that the interior threads for L125 on the right side are worn to the point that the bolt slides in and out. Is this a job for a helicoil?

Title: Re: head cover bolt problems
Post by serowbot on 06/19/09 at 22:18:06

L60,.. get a toothy vise-grip on it real tight, and give it some sharp wraps with a hammer.... you'll have to replace it when you get it out. If you can't get a vise-grip on it, put the 10mm on it and gently tap a small nail down between one of the wrench teeth and the bolt, then tap the wrench CCW with a hammer...
L125 sounds like a helicoil...
good luck...

Title: Re: head cover bolt problems
Post by Bobbert on 06/20/09 at 17:25:37

tried and failed both methods.

worse comes to worst, would it be possible to drill out the bolt then coil the hole?

Title: Re: head cover bolt problems
Post by verslagen1 on 06/20/09 at 18:01:23

The question is... is it the hole or the bolt?

If it's the bolt, just get a new one.

If it's the hole, put in a helicoil and get a new bolt.

In any case you got to get out the bolt. Twist it off is the only way.

Title: Re: head cover bolt problems
Post by diamond jim on 06/20/09 at 20:30:18

Can you slightly file two sides of the bolt head, force a tight fitting 3/8" or even a 9mm open end wrench on it and get it out?

Title: Re: head cover bolt problems
Post by justin_o_guy2 on 06/21/09 at 04:05:30

A few quick raps on the head can help get a bolt to let go. Works on some people, too.

Title: Re: head cover bolt problems
Post by Bobbert on 06/21/09 at 12:57:07

4E434B4745444E4043472A0 wrote:

Can you slightly file two sides of the bolt head, force a tight fitting 3/8" or even a 9mm open end wrench on it and get it out?

problem with this bolt is that it's right next to a raised area and the breather tube. Makes it impossible to get vice grips on there and very tough to file.

Title: Re: head cover bolt problems
Post by justin_o_guy2 on 06/21/09 at 20:01:50

Maybe cut a piece of a feeler gauge , stick it on the bolt head & drive a socket on so it wont spin?

Title: Re: head cover bolt problems
Post by verslagen1 on 06/21/09 at 21:10:05

You gotta 6 point socket?

This will get you pass the point of removing the cover... Drill or grind off the head.

When you get the cover off, you'll be able to clamp a vice grip on the headless bolt.