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Crank pulley - remove seal?

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
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Year and Model: V70 1998 T5
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Crank pulley - remove seal?

Post by 5rivers »

I am in the midst of a timing belt, tensioner, idler pulley, water pump change and replacing the gasket on the oil pump. The crank shaft seal seems ok but the gasket was in need of replacement. I have questions - given how difficult the seal is to remove and replace should I leave it in place; the bolts appear to have either thread lock or some sort of sealant - should I clean these up and apply thread lock?
When I get to putting the crank shaft pulley back on, what are your recommendations?
Appreciate your replies!
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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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scot850
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Post by scot850 »

Are you sure the bolts have sealant on them? A lot of what I can see is just plain oily dirt. If there is some king of sealant, it may not be thread locker but a silicon type product to stop oil passing up the threads. I have to say it has been a long time since I did this last so my memory is vague now. New seals are always good.

Don't recall the crank pulley being a particular issue. What I would recommend is making sure where the seal fits onto the shaft it seals onto, is clean and has no sharp edged from wear or it will leak.

Hopefully one of the guys who has done this more recently can jump in here.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
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1997 Volvo 850 SE NA - Went to niece in California - Sold
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volvolugnut  
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Post by volvolugnut »

The stuff on the top few threads looks like RTV (Room Temperature Vulcanizing) sealant to me. I would clean it off before reusing the bolts.
Others can advise if new thread sealant is needed.
volvolugnut
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
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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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Post by 5rivers »

Thank you for your replies!
I cleaned up the bolts and pulled out the old seal and installed the new seal.
I have installed the cover for the oil pump with a new gasket, and am in need of torque measurements for the bolts. They did not require much force to take them off, but want to make sure I am not over tightening them. Appreciate your help on 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
Top
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 »

In a different post, I found the torque specs for the oil pump bolts = 10Nm or 7.4 ft lbs.
Hope someone can confirm this!
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
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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 »

4 bolts to balancer torque specs that I found is 25Nm plus 90 degrees
Nut on the crank pulley shaft requires a torque of 110 Nm plus 90 degrees

25Nm = 18.4 ft lbs
110 Nm = 81.13 ft lbs

Does this mesh with your sources?
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
Top
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 did clean the bolts and put some of the anaerobic gasket maker on the bottom of the head of each bolt. Oiled the new o-ring installed the part, tightened the bolts down. I could only reach two of the bolts with my torque wrench, and tightened the other bolts with similar force using a ratchet with the torx30 bit.

The rest of my repair work is noted in the post titled “timing belt..”
Where I really need 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
Top
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volvolugnut  
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Post by volvolugnut »

Haynes manual for 1998 to 2007 gas engine Volvos lists 4 Ft- Lb for the oil pump bolts.
volvolugnut
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
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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 »

Oh my - I will have to remove the bolts and start over!
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
Top
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 bolts are slightly tighter than they should be. Will that be a problem?
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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