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Torque to yield bolt, set angle with impact?

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  • 25-07-2022 1:15pm
    #1
    Kencollins
    Registered Users Posts: 567 ✭✭✭


    Hello!

    I need to replace the crankshaft pulley on my 1.8 TCDI engine. The spec for the bolt is 100NM + 100 degrees.

    I can get the 100NM with the torque wrench easily enough, but there is a lot of give in the drive train when I try to do the angle. Even with a screw driver in the brake disk blocking it against the caliper, and the car in gear there is still too much flex to get to the 100 degrees.

    Question - If I mark the socket at 0 degrees, and mark the block at 100 degrees, can I use my battery torque wrench (DeWalt 900NM one) to set the angle? The bolt itself is an M14 so I don't think I will snap it!


    Thanks!



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    #2
    Dirty Nails
    Registered Users Posts: 463 ✭✭Dirty Nails


    I might be mistaken,but I think you're playing with fire. Unless you have the crankshaft locking pin,you are going to lose the timing as I don't think there's a key in the crankshaft sprocket. Whatever you do make sure to spin the engine by hand before you try starting it.

    That is the Ford engine & not the Peugeot engine?



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    #3
    Kencollins
    Registered Users Posts: 567 ✭✭✭Kencollins


    Its the Ford 1.8 in a Galaxy. I don't have the locking kit for the car, but on others I would have been afraid to put the full torque on a locking pin. I had a lucky escape with a 1.5 DCI engine where the crank locking pin was bent by the torque required and almost didn't fit back out the hole!

    I didn't think of no woodruff key on that engine though. Maybe I should invest in a flywheel locking tool?!



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    #4
    Kencollins
    Registered Users Posts: 567 ✭✭✭Kencollins


    Looking at a repair video for changing the wet belt, it looks like the crank sprocket is indeed keyed to the crankshaft with a pin.

    Which is good, because I had to put on a scrap part last week to get the car ready for holidays the next day! It would have been a bad "please explain" with the wife if I destroyed the engine in the process!



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