308 cam bolt lock tabs | FerrariChat

308 cam bolt lock tabs

Discussion in '308/328' started by Paul308GTSi, Dec 13, 2011.

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  1. Paul308GTSi

    Paul308GTSi Formula 3

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    #1 Paul308GTSi, Dec 13, 2011
    Last edited by a moderator: Sep 7, 2017
    Help !

    How on earth do you get the new lock tabs bent over on the camshaft pulley bolts.
    I asked my local (and highly respected) Ferrari mechanic and I must have got it all wrong. I figured it would be easy enough to pry the corners up and tap the rest down onto the side of the bolt head.

    Does anyone have any clues ...... Please.
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  2. luckydynes

    luckydynes F1 Rookie

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    I have a small pry bar that works perfectly. It is the style of prybar that is just like a big screwdriver with a bit of an angle kicked at the end ... about 8" overall length. It will "grab" the end of the tab and then the back rests against the i.d. of the pulley ... gives you plenty of leverage. I use that to start the bend and then use a hammer and screwdriver to seat them against the nut. Hope that makes sense.

    cheers

    edit: with plastic pulleys I'd put a piece of aluminum and a rag against the pulley so your not levering directly on the plastic
     
  3. mwr4440

    mwr4440 Five Time F1 World Champ
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    For next time, how about start the "bend" before installation.


    Can that be done?
     
  4. luckydynes

    luckydynes F1 Rookie

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    The problem with that is you end up with less bite on the bolt. You have to be really holding the socket firmly on there. I just replaced an o-ring on one of my pulleys just the other day and I didn't bend the tab all the way back. I couldn't keep the socket on there firmly enough to back the bolt off with any of the tab still being "up". I did put a 6 point 24 mm socket on my list to order next time ... that'll help.

    cheers
     
  5. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    #5 Pizzaman Chris, Dec 13, 2011
    Last edited by a moderator: Sep 7, 2017
    I had the same problem with my aftermarket pullies. One tab didn't line up and the other one did. The mechanic didn't want to gauge them so he left them alone. He said they are torque to spec but I should still do something with them.
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  6. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Don't see a technical problem with bending it over the corner of the nut (and then flattening each corner of the tab onto its corresponding flat) -- it will still work OK -- JMO.
     
  7. mwr4440

    mwr4440 Five Time F1 World Champ
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    What he said.

    Seen it done many-a-time on many projects with zero problems.
     
  8. ProvaMo

    ProvaMo Formula Junior

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    I used a slide-hammer with a small pan-head screw (1/4-20) inserted to the threaded head that fits under the tab (I ground the screw head to fit and give it a sharper edge for bite). A couple of gentle taps up brings the tab out, then I used a flat drift (at an angle) and regular hammer to seat the tab.
     
  9. robertgarven

    robertgarven F1 Veteran
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    #9 robertgarven, Dec 14, 2011
    Last edited by a moderator: Sep 7, 2017
  10. Paul308GTSi

    Paul308GTSi Formula 3

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    All suggestions / techniques much appreciated as usual guys. I'm going to try the pry bar idea, , , I will machine up a piece of aluminium to spread the load on the plastic pulley , ,, , just to be safe.

    :)
     
  11. Peter

    Peter F1 Veteran
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    Same here...
     
  12. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Picture of this tool o'l wise one. :)
     
  13. robertgarven

    robertgarven F1 Veteran
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    #13 robertgarven, Dec 16, 2011
    Last edited by a moderator: Sep 7, 2017
    These are not mine I have a craftsman set. I am the least smartest here but have found that hammering and or prying on my engine (or anywhere on the Ferrari for that matter) did not result in the optimum result.

    Its been a few months but I think I put a small piece of card board on the area of the washer with the tab going down and used the other jaw to grip the open tab. leverage being minimal and after it was perpendicular to the washer I used a slight bit of more force on the tab over each flat of sections as this tab was not on a pure flat to achieve my final results.
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