What do you use to lock the crank?

[mark123]

On an 172/182 engine.

I have the pin to lock the crank for tensioning the cam belt and setting the timing but I've heard people talking about a tool to lock the crank via the fly wheel for tightening the crank pulley bolt. Previously I've used a screw driver but this never feels 100% satisfactory.

Thanks.

 

[Hutchie]

erm the locking pin....

heard a 7mm drill bit fits also :rasp:

 

[mark123]

erm the locking pin....

heard a 7mm drill bit fits also :rasp:

It's 8mm actually. You don't use it when tightening the crank pulley though you remove it and that's the bit I'm asking about.

 

[sideways danny]

if you look at the gearbox, there's a hole on the top near the front with timing marks. The flywheel has a notch that's normally highlighted with paint. align the flywheel mark with the 0 mark on the gearbox casting and use a small pry-bar to jam the fly. I normally leave the lock pin in the block/crank but put the tightening load against the pry-bar