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Crank Pulley bolt...K series


GPBox

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Hi all, does the bolt need to be replaced once its been removed (for cambelt change) ?...2003 R400K...or can same be re-used ?....where is best place to get a replacement if needed (quickly :-) )..thanks Graham

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Fine to re-use the same bolt as long as there's no damage. Use plenty of Loctite and make sure you torque it fully - it's a big torque, around 200Nm IIRC so you'll need some method of locking the crank properly.

Stu.

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Loctite?  Once you've tightened it to 200 Nm won't that make it impossible to remove? 

If you haven't undone it yet my tip is to jack the car up, fit the socket / breaker bar with the end of the bar resting on the floor, then lower the car, using its weight to undo the bolt.

Crankshaft locking tool:
CrankshaftLockingTool.JPG.51d8f3a644dfab0ea22e8b3f7a6c2c93.JPG

You can do the same thing with the engine in the car.

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Hi, thanks all....I've done this job a few time before on previous 7's...i was being lazy this time and getting a local  specialist /grarag to do it for me...he has recommended the bolt be changed....just gathering 3rd, 4th and 4th opinions...if he canot get one relatively quickly, I'll ask him to refit the original...cheers

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As above the correct torque is 205 Nm. Official Rover manual does not specify locking agent. The presence of locking agent alters the torque setting (so you don’t know what it actually has been set to) and next time around it’s difficult to be sure that the thread in the crank is perfectly free from old locking agent.

I have fitted several and they have always remained tight.

I have come across a crank bolt on someone else’s car that was under torqued and covered in locking agent.....

Malcolm

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I don’t use a locking agent on crank bolts, or cam pulley bolts. , if they are correctly torqued they will not come undone. Clogging up the thread with loctite presents all sorts of issues, not the least of which is establishing the correct torque when the bolt is removed and refastnened. The only place I would use loctite is where the thread is required to be sealed (flywheel bolt), on the induction system (air horn or airbox fixings) and on  any small fastener that lives inside the cambelt cover void. I have never had crank bolt come undone.

Oily

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