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Timing belt change

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
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Re: Timing belt change

Post by 5rivers »

Thanks for your replies and suggestions!
Since taking off the timing belt, I replaced the water pump, removed the oil pump and after cleaning up the part, put on a new seal, o- ring, and gasket. Cleaned up the bolts and installed the oil pump ( cover). Then put on the inner pulley, fed the timing belt through, then installed the crank pulley. Tried to tighten the bolts as best as I could without the crank moving and did the same with the nut to the crank shaft with a cordless impact wrench. Then installed the tensioner and idler. Torque everything in place, except for the tensioner. I set the tensioner and then tightened the bolt.
I made the adjustment to the rear camshaft sprocket and torqued those bolts down. All the marks are almost spot on!! But, when I went to perform the two revolutions of the crank, I could only make a quarter of a turn. Not sure what needs to be adjusted, but am unable to make the two revolutions of the crank. Maybe the nut to the crank was put on too tight!?! The crank did move a few times as I was removing and installing the oil pump but I tried to put it back in place always moving it clockwise. What did I do wrong?
Help!
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

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Sveedy
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Post by Sveedy »

Stupid question, but spark plugs removed, correct ?
Try to learn life's bad lessons vicariously through others.


1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

I must have missed that part of the process!
I will take them out in the morning! Thanks 😊
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

I removed the spark plugs but the crank pulley still does not want to move!
Any idea what is causing this?
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

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Sveedy
Posts: 2069
Joined: 11 November 2019
Year and Model: 96 850 Turbo
Location: N. Arizona
Has thanked: 417 times
Been thanked: 457 times

Post by Sveedy »

Ok, someone else is going to have to confirm, but I think your crank timing mark lines up twice per engine revolution. If that is the case, then maybe you're off by 180* ( compression vs exhaust ). You would just need to take off the belt, and rotate the crank till the mark goes around and lines up again. But again, I'm not 100% sure.

^ Ignore this. I don't know what I was thinking. Mark isn't TDC, and exhaust would happen when the mark is not visible. One revolution, not two.
Last edited by Sveedy on 27 Apr 2023, 07:02, edited 2 times in total.
Try to learn life's bad lessons vicariously through others.


1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

Thanks for your reply!
I have taken the timing belt off and attempted to rotate the crankshaft but to no avail.
Still stumped!
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

I managed to get things moving, but when I line up the crank pulley, the marks on the camshafts are way off. I have turned the crank 5 or6 times but nothing seems to change.
How do I correct this?
Appreciate your replies!
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

image.jpg
image.jpg (484.96 KiB) Viewed 305 times
Pic of cam timing marks when crank is aligned.
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

The exhaust cam is off by 3.5 teeth, the intake is off 1 tooth.
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

5rivers
Posts: 533
Joined: 27 February 2009
Year and Model: V70 1998 T5
Location: The North Country, NYS
Been thanked: 14 times

Post by 5rivers »

Should I take the belt off again and adjust both cam sprockets by:
Loosening the bolts and moving the sprocket?
Or take sprockets off and line up the marks with the timing belt cover?
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims

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