Cam belt snapped, any pointers ?

besidetheseaside · Mar 4th, 2019, 14:58

Hi Guys, Cam belt has snapped luckily only 200 yards from home and at very low speed, fingers crossed for the valves. Tensioner and belt just about to be ordered, any hints and tips for me before I start the job ?? When setting the timing marks up should I turn the crank or the camshaft first to avoid valves touching pistons ??
Many thanks, Don.

mocambique-amazone · Mar 4th, 2019, 15:32

My ball made of glass is in maintenance.
I'm able to imagine the kind of engine that's in your car.
Waaaaaaaaaaay better would be to KNOW the kind of engine and car!

Should be sooooo simple
Could be sooooo simple

The question and the answer

Good luck, Kay

mocambique-amazone · Mar 4th, 2019, 15:34

Brand? I think : Volvo!
I'm right????

bob12 · Mar 4th, 2019, 15:36

That's not an interference engine is it?

besidetheseaside · Mar 4th, 2019, 15:40

Apologies, B200FT, 1993 2.0 Turbo. 940 Estate

mocambique-amazone · Mar 4th, 2019, 15:47

No interference engine. No bent valves.
Automatik or manual? ????????

besidetheseaside · Mar 4th, 2019, 15:48

Automatic

Laird Scooby · Mar 4th, 2019, 15:57

As far as i'm aware, that's a non-interference engine.

Assuming the timing marks on the crank pulley are accurate, set the crank to about 90BTDC so the pistons are all halfway down the bores then set the cam to TDC on #1, verified by the cams being on the heels on #1 cylinder, the cam lobes if you look from the front will form a "V" shape with the lobes uppermost.

Now bring the crank pulley to the timing marks/TDC and fit your belt, tensioning as per instructions.

It's a long time since i did a belt on a red block so can't remember the tensioning procedure, sorry, but once tensioned, remove the plugs and turn the engine over using a spanner or socket on the crank pulley, making sure the valves are opening and closing and no "tight" spots.

If all is good, recheck the belt tension, refit the plugs and start it up.

mocambique-amazone · Mar 4th, 2019, 15:57

There is a special tool to block the crank while untighten and tighten the central screw on the crank. Think about to renew the three seals: crank-, intermediate- and camshaft

griston64 · Mar 4th, 2019, 16:03

+ 1 on the seals. They aren't expensive and while you are there well worth doing

Mar 4th, 2019, 15:57	#8
Laird Scooby Premier Member Last Online: Yesterday 23:53 Join Date: May 2012 Location: Lakenheath	As far as i'm aware, that's a non-interference engine. Assuming the timing marks on the crank pulley are accurate, set the crank to about 90BTDC so the pistons are all halfway down the bores then set the cam to TDC on #1, verified by the cams being on the heels on #1 cylinder, the cam lobes if you look from the front will form a "V" shape with the lobes uppermost. Now bring the crank pulley to the timing marks/TDC and fit your belt, tensioning as per instructions. It's a long time since i did a belt on a red block so can't remember the tensioning procedure, sorry, but once tensioned, remove the plugs and turn the engine over using a spanner or socket on the crank pulley, making sure the valves are opening and closing and no "tight" spots. If all is good, recheck the belt tension, refit the plugs and start it up. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Mar 4th, 2019, 16:03	#10
griston64 Premier Member Last Online: Yesterday 18:50 Join Date: Jul 2012 Location: Lenzie	+ 1 on the seals. They aren't expensive and while you are there well worth doing __________________ V70 D5 SE Geartronic 215bhp Saville Grey 2012MY 940 LPT Manual 1996 740 SE 1990

Mar 4th, 2019, 14:58	#1
besidetheseaside Senior Member Last Online: Jan 26th, 2024 05:55 Join Date: Dec 2013 Location: Liverpool, now residing in North Wales.	Cam belt snapped, any pointers ? Hi Guys, Cam belt has snapped luckily only 200 yards from home and at very low speed, fingers crossed for the valves. Tensioner and belt just about to be ordered, any hints and tips for me before I start the job ?? When setting the timing marks up should I turn the crank or the camshaft first to avoid valves touching pistons ?? Many thanks, Don. Last edited by besidetheseaside; Mar 4th, 2019 at 15:01.

Mar 4th, 2019, 15:32	#2
mocambique-amazone Master Member Last Online: Jan 24th, 2022 17:08 Join Date: Nov 2008 Location: small village in the north of Germany	My ball made of glass is in maintenance. I'm able to imagine the kind of engine that's in your car. Waaaaaaaaaaay better would be to KNOW the kind of engine and car! Should be sooooo simple Could be sooooo simple The question and the answer Good luck, Kay

Mar 4th, 2019, 15:34	#3
mocambique-amazone Master Member Last Online: Jan 24th, 2022 17:08 Join Date: Nov 2008 Location: small village in the north of Germany	Brand? I think : Volvo! I'm right????

Mar 4th, 2019, 15:36	#4
bob12 bob12 Last Online: Apr 25th, 2024 11:19 Join Date: Aug 2006 Location: Woking	That's not an interference engine is it?

Mar 4th, 2019, 15:40	#5
besidetheseaside Senior Member Last Online: Jan 26th, 2024 05:55 Join Date: Dec 2013 Location: Liverpool, now residing in North Wales.	Apologies, B200FT, 1993 2.0 Turbo. 940 Estate

Mar 4th, 2019, 15:47	#6
mocambique-amazone Master Member Last Online: Jan 24th, 2022 17:08 Join Date: Nov 2008 Location: small village in the north of Germany	No interference engine. No bent valves. Automatik or manual? ????????

Mar 4th, 2019, 15:48	#7
besidetheseaside Senior Member Last Online: Jan 26th, 2024 05:55 Join Date: Dec 2013 Location: Liverpool, now residing in North Wales.	Automatic

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