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Crankshaft is turning so hard

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sibin2011
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Crankshaft is turning so hard

Post by sibin2011 » Sun Oct 20, 2019 6:14 pm

Hi there.
I’m not mechanic but tried to fix my Volvo by myself and didn’t make it.
I replaced cylinder head because valves were burned and had low compression as well head gasket was bad to. So after I assembled everything and replace water pump as well, car wouldn’t start. I have noticed that is very hard to move crankshaft (rotate) and don’t know what did I do wrong. Would that be case if this cylinder head that I have installed (used, but it looked like a new) have bent valves or that they are somehow stuck? I have replaced sensors on crankshaft and camshaft, ETM, spark plugs and coils, fuel injectors. Please help if you have any idea.



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BlackBart
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Re: Crankshaft is turning so hard

Post by BlackBart » Sun Oct 20, 2019 10:02 pm

If your timing belt installation was not correct, the pistons made be pushing up on valves that are opening at the wrong time. Does it have variable valve timing hubs on either cam?


ex-1984 245T wagon
1994 850T wagon
2004 XC70 wagon BlackBetty
Is it time for a 1964 122 wagon?

sibin2011
Posts: 2
Joined: Sun Oct 20, 2019 5:58 pm
Year and Model: 2002 XC V70
Location: Utah
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sibin2011

Re: Crankshaft is turning so hard

Post by sibin2011 » Mon Oct 21, 2019 12:23 am

It does have variable timing hub on inside camshaft (one that is closer to firewall), and I’m not sure in what position it should be because couldn’t find good directions how it need to be positioned. I have rotated towards other camshaft and lined up mark in that position.
Thank you so much for your input.



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BlackBart
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Re: Crankshaft is turning so hard

Post by BlackBart » Tue Oct 22, 2019 11:18 am

There's a specific procedure for marking, holding, and setting up the timing on the VVT.

There's a cam-lock tool available to hold the cams in the correct position while the belt is off. be careful with the cheap bolts on the Chinese-made tools.

Some helpful references here....
viewtopic.php?f=9&t=86536&p=481583&hilit=vvt#p481583

https://www.pelicanparts.com/techarticl ... emoval.htm

My only issue with this helpful post was the instruction to crank the cam-lock tool down. That is incorrect - you may shear the tiny bolts off inside the camshaft threads.
CVVT Hub Setting Guide - Rev2.pdf
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ex-1984 245T wagon
1994 850T wagon
2004 XC70 wagon BlackBetty
Is it time for a 1964 122 wagon?

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