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Author Topic: Changing head gasket - locking tools?  (Read 2306 times)

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woolley11

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Re: Changing head gasket - locking tools?
« Reply #60 on: 17 October 2020, 20:26:43 »

Will do - thanks.

wondered if it was pretty close to metal meeting metal.

Just canít see how itís happened but Iím a pretty much a novice so must have done something wrong 🤷🏼‍♂️
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Nick W

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Re: Changing head gasket - locking tools?
« Reply #61 on: 17 October 2020, 21:49:07 »

Will do - thanks.

wondered if it was pretty close to metal meeting metal.

Just canít see how itís happened but Iím a pretty much a novice so must have done something wrong 🤷🏼‍♂️


Having one of the eccentrics set wrong so that it stopped tightening the belt as you adjusted it is one possibility.


Not having the belt tight around the crank pulley and wedged in place is another. You have to remove the wedge ohce the belt is around all of the pulleys!


Hopefully you are turning the engine through a complete cycle between each step of the adjustment process. I like at least two 'confidence turns' before putting the timing tools away. I do similar on all complex processes, as it reduces the possibility of having to redo the job :y


You are holding the 30mm hex of each adjuster as you torque the Torx bolt? Having the correct spanner(or something similar in my case) makes this much easier than wrestling with a fullsize 30mm spanner
« Last Edit: 17 October 2020, 21:53:06 by Nick W »
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woolley11

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Re: Changing head gasket - locking tools?
« Reply #62 on: 18 October 2020, 08:37:53 »

From the pictures Iíve taken and studied, the advanced movement is equivalent to 1 tooth of the belt - so whether itís jumped or ďsettled downĒ on running 🤷🏼‍♂️

Possibly where I have gone wrong in hindsight, is tightening the tensioners hex bolts to a point and then using a 30mm socket to nip up the adjuster in desired position before tightening & torquing  the hex bolt.

I donít have a 30mm spanner in my collection so improvised. Maybe before I do anything Iíll get one of those today.
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Nick W

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Re: Changing head gasket - locking tools?
« Reply #63 on: 18 October 2020, 09:14:39 »

From the pictures Iíve taken and studied, the advanced movement is equivalent to 1 tooth of the belt - so whether itís jumped or ďsettled downĒ on running 🤷🏼‍♂️

Possibly where I have gone wrong in hindsight, is tightening the tensioners hex bolts to a point and then using a 30mm socket to nip up the adjuster in desired position before tightening & torquing  the hex bolt.

I donít have a 30mm spanner in my collection so improvised. Maybe before I do anything Iíll get one of those today.


If you don't hold the adjuster while tightening the bolt, it will move. Which is why you must turn the engine through before refitting the covers.


I bought my timing set used, and it's the cheaper Sealey one that doesn't have the spanner. The first time I used it was with a standard 30mm combination spanner, which is far too long and the ring barely fit the nut. Buying the spanner separately would have cost almost as much as I paid for the rest of the kit, so I improvised:





That's an old 30mm socket that had clearly been used with an impact wrench because the 1/2" drive hole was badly rounded. I bored that out so my Torx socket fit through it, and welded on a piece of steel strap bent to clear everything. The hole is to cable tie it to the handle of the locking toolset.
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woolley11

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Re: Changing head gasket - locking tools?
« Reply #64 on: 18 October 2020, 09:45:24 »

Thanks Nick

The other thing Iíve noticed is watching the cam belt video is that whilst you ensure the idlers are pre-set at 12 & 3 oíclock. Iíve assumed that these are the final positions and turned the eccentric 30mm heads accordingly 🤔 - rather than letting them ďmoveĒ adjust the timing.

Few school boys errors but itís all part of learning & understanding 👍
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Nick W

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Re: Changing head gasket - locking tools?
« Reply #65 on: 18 October 2020, 09:57:17 »

Thanks Nick

The other thing Iíve noticed is watching the cam belt video is that whilst you ensure the idlers are pre-set at 12 & 3 oíclock. Iíve assumed that these are the final positions and turned the eccentric 30mm heads accordingly 🤔 - rather than letting them ďmoveĒ adjust the timing.



What matters is that all of the timing marks align, and the belt is tensioned correctly. The pre-sets are to place the eccentrics so that you get plenty of adjustment to achieve both of those requirements.
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Enceladus

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Re: Changing head gasket - locking tools?
« Reply #66 on: 18 October 2020, 13:16:37 »

Why are you going to get a 30mm spanner today? On the 2nd of June you told us you'd purchased a timing tool kit complete with the required spanner. You use the spanner in the kit to hold the hex eccentric in position on the idler rollers whilst tightening the Torx head bolts with a suitable socket and ratchet.

One full kit purchased including gauge and spanner  :y
From the pictures Iíve taken and studied, the advanced movement is equivalent to 1 tooth of the belt - so whether itís jumped or ďsettled downĒ on running 🤷🏼‍♂️

Possibly where I have gone wrong in hindsight, is tightening the tensioners hex bolts to a point and then using a 30mm socket to nip up the adjuster in desired position before tightening & torquing  the hex bolt.

I donít have a 30mm spanner in my collection so improvised. Maybe before I do anything Iíll get one of those today.
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