Volvo Penta 2002 valve adjust

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Muddy13

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I'm looking for some tips on adjusting the valves on my 2002. The descriptions I have in the manual are unclear on when (in what position) to measure the gap (0.3mm?). Also, is there any need to check the torque when reseating the cover (planning on fitting a new gasket) and any order of tightening.

Thanks, Steve.
 
If you download the workshop manual, you'll find the instructions are all there. To check the valve clearance, turn the crankshaft until the valves on one cylinder are rocking, then turn it one more revolution and check the clearances for that cylinder. I wouldn't bother torquing the cover, just tighten it by hand.
 
Muddy13 said:
I'm looking for some tips on adjusting the valves on my 2002. The descriptions I have in the manual are unclear on when (in what position) to measure the gap (0.3mm?). Also, is there any need to check the torque when reseating the cover (planning on fitting a new gasket) and any order of tightening.

Thanks, Steve.
Click to expand...

What PVB says

By "rocking" he means the point at which one valve is closing and the other one on the same cylinder is opening.

A full crankshaft rotation on from there both valves will be closed with the cam followers on heels of the cams. This is the point at which to make the adjustment. When correctly adjusted the feeler gauge should just slide in the gap, not feeling tight exactly but certainly not slack, when the locknut has been re-tightened. Usually needs a bit of trial and error until you get the knack.

Yes the gap is 0.30mm or 0.012" ( 12 thou)
 
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Muddy13 said:
....... and any order of tightening.
Click to expand...

If you can't find a manual, the usual method of tightening if there are 6 or more bolts is to pick the two most central opposite bolts and start with those two, then move one left on one side and one right on the otherside ... so a short diagonal. Then the opposite short diagonal. Then back to the first diagonal but one bolt further from the central etc. and do this in stages of tightening.

I guess the idea is that any distortion in the cover is "pushed" outwards from the middle to the each edge rather than being "trapped" in the middle with nowhere to go, if that makes sense. :)

Richard
 
RichardS said:
If you can't find a manual, the usual method of tightening if there are 6 or more bolts is to pick the two most central opposite bolts and start with those two, then move one left on one side and one right on the otherside ... so a short diagonal. Then the opposite short diagonal. Then back to the first diagonal but one bolt further from the central etc. and do this in stages of tightening.

I guess the idea is that any distortion in the cover is "pushed" outwards from the middle to the each edge rather than being "trapped" in the middle with nowhere to go, if that makes sense. :)

Richard
Click to expand...

Looks to me as though there are only two !

10244.jpg
 
third engines said:
This is getting painful RichardS. As you have never experienced this model of engind, I do not think you should be posting on this thread.

Seem familiar does it? Karma dear boy, karma
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Thats unfair. I am sure Richard was giving sound "generic" advice that will be useful to others who may stumble across this thread.

If you observe Richard's recent advice to a new forum user:
RichardS said:
Thankfully it doesn't take long to distinguish between those who speak from personal experience and those who read it on the internet.
Richard
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I am the one your should be criticizing for giving advice on an engine of which I have no personal experience. I only know what I think I know as a result of reading the workshop manual on the internet!
 
VicS said:
Thats unfair. I am sure Richard was giving sound "generic" advice that will be useful to others who may stumble across this thread.

If you observe Richard's recent advice to a new forum user: I am the one your should be criticizing for giving advice on an engine of which I have no personal experience. I only know what I think I know as a result of reading the workshop manual on the internet!
Click to expand...

If you research a recent post regarding thread sealant you may understand.
 
third engines said:
If you research a recent post regarding thread sealant you may understand.
Click to expand...

When the OP asks for advice on the order of tightening of rocker cover bolts, it would seem reasonable to assume that he has more than 2 to choose from. :)

As for the "thread sealant" thread, I do not believe that you will find any engineer in the whole of Christendom, or beyond, who would recommend using a BSP taper thread on a fuel line without using any sealant or tape. I've no idea where you pick these ideas up from Third Engine, but I'm afraid that one is positively dangerous.

Thank you Vic. :)

Richard
 
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