Replacing Timing Belt Volvo 740
My issue is how to best remove the Front End pulley nut to remove the pulley(s) to then remove Timing Belt cover. Belt is broken! Have everything else undone and just don't want to break anything.
Do I need a special tool or technique and incidently what torque should it be done up to upon re-assembly? Not sure if this is the correct location to ask such a question but no doubt I'll find out soon enough. Thank, Geoff |
well if your talking about the harmonic balancer the bottom pulley off the crank, if u have air tools or electric impact will take off the bolt quickly, if not use a breaker bar and find way to keep pulley from t urning as your loosening the nut. then once the bolt is out just tap either side of the pulley from behind with a hammer and it usually come off. as for torque on reassembly i cant rmember i'll have to look it up but you could prolly find torque spec on google for the harmonic balancer. i just did head gasket and timing belt on my 740 and it really wasnt to hard to do took me about 3 hours to do both.
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Thanks KIA.
It is the stopping the pulley from turning that is the issue. Maybe if I remove starter motor I can get at the teeth of the flywheel and put a stop there whilst I wrestle with the bolt at the other end. |
I would use the rope trick posted by Bruce Young at Brickboard.
http://www.brickboard.com/RWD/volvo-1053738.html |
Here is what the crank pulley holder looks like:
http://www.ipdusa.com/Volvo-700/Tool.../p-70-723-553/ Sometimes they show up on Ebay. Tightening torque, pulley bolt: stage 1 44 ft-lb stage 2 turn additional 60 degrees |
We also have the pulley holder, so let us know if you need one.
I would use the pulley holder over the rope trick. I did the rope trick once and the rope got stuck. Ended up having to pull the head to get the rope out. |
I have the Volvo special tool for holding the crank, but I've never used it. With the rope trick you want to be sure to leave a couple feet of rope hanging out of the spark plug hole. After tightening the crank pulley bolt rotate the crank CCW to bring the piston back down. Then use a wooden dowel to loosen the compacted rope at the top of the cylinder. Then you should be able to just pull the rope out. Use 1/4" cotton clothesline, not really thin stuff.
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Thanks you all ... here is my solution
Put the 24 mm socket on the nut.
Put an extender on the rachet handle (a bit of water pipe). Brace it against a 4x2 piece of wood running the length of the engine housing. Blip the starter and the jobs done! Back on the road again! Thanks, Geoff |
Do you blip the starter to set the torque when tightening the crank pulley nut?
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Starter is only good to undo bolt
Just tightened it as well as I could by offering as much resistance to turning as possible.
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+1, just tighten it as much as you can. You can blip the starter, but if the breaker bar slides and comes flying at you, you will get hurt. So I do not recommend doing that.
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Do you blip the starter to set the torque when tightening the crank pulley nut? +1, just tighten it as much as you can. You can blip the starter, but if the breaker bar slides and comes flying at you, you will get hurt. So I do not recommend doing that. |
+1. The crank turns clockwise looking from the front. Blipping the starter will loosen the nut. It cannot be used to tighten the nut. Good luck on tightening the nut as much as you can without holding the crank. If that nut comes off..., well, let's not think about that.
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You're gonna have to hold the crank somehow when you tighten it using the rope trick or something. The bolt WILL come out if it isn't properly tightened, it's happened to me before and luckily the only damage was to the crankshaft sprocket. If that happens you have no power steering, no water pump, no cooling fan and no alternator so you best hope it happens close to home and during the day. The car will run but it will overheat fast so you'll be driving a few minutes then waiting a half hour to cool it down if this happens.
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