1994 Volvo 960 est. 3.0L Cam belt change

mechman1 · Jan 30th, 2011, 17:37

Hello ,.im new to this forum,.I am replacing the timing belt on a 1994 960 3.0L
i have seen the routine on autodata disc,..but am a bit confused as ,to the timing marks ? theres no marks on the cam sprockets(i.e lines),.just a white paint mark on each,..am i to assume these are the manufacturers marks ?,also the Crank sprocket, i can see the raised mark on front case, but nothing on the belt sprocket itself,..i did notice a raised line on the flywheel hub,..but when removing No1 plug and placing a rod down the bore, with the hub line and case mark alignied, the piston is not @ TDC ?,..i know some cars have the cam timing set at below/after TDC,..would this be the case with this vehicle ?
Any help at all would be greatly appreciated, heres hoping! lol
Many Thanks in advance Mick

CTCNetwork · Jan 30th, 2011, 17:45

Hi,

Have a look at the info in the FAQ:
FAQ: B6xxx timing belt change...

You might also want to consider the tensioner and change that too.
Have a look/check of the water pump as well.

Des. . .

Clan · Jan 30th, 2011, 18:08

The mark on the crank pulley is NOT TDC it is a timing mark where the pistons are all down the bore so that you can turn the camshafts to the correct location , there will be a fine scribed mark near the edge of the pulleys ...

mechman1 · Jan 30th, 2011, 18:46

Thanks to Des & Clan for your input, yes des the reason for this work are a new waterpump,.as the bearing had siezed,..just hoping valves are ok ?? as there are 24 of them just wondering the likeliehood of piston /vavlve contact, i have photographed all the pulleys to show what i mean about the timing marks,..is there any way i can post the pics here ?

grollie · Jan 30th, 2011, 19:50

I have hopefully uploaded the Timing Diagram for the 3.0L 960 Engine. i Hope this helps? I would consider putting timing belt on and doing a compression check. If all are ok/similar values you'll have got away with it if not then it's the cylinder head off i'm afraid

mechman1 · Jan 30th, 2011, 20:27

Thanks grollie but thats the picture i have on my autodata disc..is there a way i can upload a sketch/photos of the all the pulleys? then everyone can see exactly what im faced with ! lol. p.s. is the crankhub/belt pulley keyed to the crank ? thanks again

CTCNetwork · Jan 31st, 2011, 01:33

Hi,

Read this topic: http://www.volvoforums.org.uk/showthread.php?t=42656
Especially this post: http://www.volvoforums.org.uk/showpo...45&postcount=2

That should get you sorted with images.

Des. . .

mechman1 · Feb 2nd, 2011, 14:49

Hi thanx again to everyone that came to help,..sorted cam timing,..new belt, guide wheel and complete tensioner assy,..on turning over ,..theres deffinatly no compression,..so its got to be head off ,..so is there anything i need to look out for upon stripping/re-building ?
Thanx , Mick

gpl1968 · Feb 2nd, 2011, 15:28

This might help

mechman1 · Feb 5th, 2011, 15:29

thanx gpl,..great info, many thanx again,..do u know if all those special tools are neccesary ? also when applying sealant to the cam cover, should i apply it to only the outer edges ?
Mick

Jan 30th, 2011, 17:37	#1
mechman1 New Member Last Online: Feb 22nd, 2011 14:48 Join Date: Jan 2011 Location: carshalton	1994 Volvo 960 est. 3.0L Cam belt change Hello ,.im new to this forum,.I am replacing the timing belt on a 1994 960 3.0L i have seen the routine on autodata disc,..but am a bit confused as ,to the timing marks ? theres no marks on the cam sprockets(i.e lines),.just a white paint mark on each,..am i to assume these are the manufacturers marks ?,also the Crank sprocket, i can see the raised mark on front case, but nothing on the belt sprocket itself,..i did notice a raised line on the flywheel hub,..but when removing No1 plug and placing a rod down the bore, with the hub line and case mark alignied, the piston is not @ TDC ?,..i know some cars have the cam timing set at below/after TDC,..would this be the case with this vehicle ? Any help at all would be greatly appreciated, heres hoping! lol Many Thanks in advance Mick

Jan 30th, 2011, 17:45	#2
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, Have a look at the info in the FAQ: FAQ: B6xxx timing belt change... You might also want to consider the tensioner and change that too. Have a look/check of the water pump as well. Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Jan 30th, 2011, 18:08	#3
Clan Experienced Member Last Online: Yesterday 22:23 Join Date: Jun 2007 Location: L/H side	The mark on the crank pulley is NOT TDC it is a timing mark where the pistons are all down the bore so that you can turn the camshafts to the correct location , there will be a fine scribed mark near the edge of the pulleys ... __________________ My comments are only based on my opinions and vast experience .

Jan 31st, 2011, 01:33	#7
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, Read this topic: http://www.volvoforums.org.uk/showthread.php?t=42656 Especially this post: http://www.volvoforums.org.uk/showpo...45&postcount=2 That should get you sorted with images. Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Jan 30th, 2011, 18:46	#4
mechman1 New Member Last Online: Feb 22nd, 2011 14:48 Join Date: Jan 2011 Location: carshalton	Thanks to Des & Clan for your input, yes des the reason for this work are a new waterpump,.as the bearing had siezed,..just hoping valves are ok ?? as there are 24 of them just wondering the likeliehood of piston /vavlve contact, i have photographed all the pulleys to show what i mean about the timing marks,..is there any way i can post the pics here ?

Jan 30th, 2011, 20:27	#6
mechman1 New Member Last Online: Feb 22nd, 2011 14:48 Join Date: Jan 2011 Location: carshalton	Thanks grollie but thats the picture i have on my autodata disc..is there a way i can upload a sketch/photos of the all the pulleys? then everyone can see exactly what im faced with ! lol. p.s. is the crankhub/belt pulley keyed to the crank ? thanks again

Feb 2nd, 2011, 14:49	#8
mechman1 New Member Last Online: Feb 22nd, 2011 14:48 Join Date: Jan 2011 Location: carshalton	Hi thanx again to everyone that came to help,..sorted cam timing,..new belt, guide wheel and complete tensioner assy,..on turning over ,..theres deffinatly no compression,..so its got to be head off ,..so is there anything i need to look out for upon stripping/re-building ? Thanx , Mick

Feb 5th, 2011, 15:29	#10
mechman1 New Member Last Online: Feb 22nd, 2011 14:48 Join Date: Jan 2011 Location: carshalton	thanx gpl,..great info, many thanx again,..do u know if all those special tools are neccesary ? also when applying sealant to the cam cover, should i apply it to only the outer edges ? Mick

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