Hi everybody! I have just come home from work and whilst going around a slightly downhill and slight righthand bend,I felt the rear kick slightly! A few moments late a noise like a wheel bearing started! So I got the wife to drive(yes, she is given permisson sometimes) and the noise is from the rear diff area! Could this be the diff or the Awd unit? The noise sound like at grating bearing! It start's as soon as you move off and get's faster until it goes at around 50 mph! Being new to the AWD ,I don't know anything about this system,other than it is like the VW syncro system! Any idea would be helpful!!! Thank's
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Thread: 850 AWD noise!!
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Tuesday 12th January 2010, 16:54 #1Senior Member
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Thanked 17 Times in 16 Posts850 AWD noise!!
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Tuesday 12th January 2010, 19:57 #2New Identity
Back in an AWD....Oh the grip!
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Thanked 2,582 Times in 2,051 PostsTBH the rear diff is off the 960, so should be a strong unit (unless the oil has leaked out!), could be the viscous coupling (attached to the front of the rear diff). Mine had a gear grinding (which got faster as speed increased) noise on it which was the angle gear (bevel gear) at the front.
Here is a description of the AWD system
www.volvoclub.org.uk/tech/850awd.pdf
Are all the tyres wearing the same?
HTH
Bomb1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
2004 Sapphire Black S60 D5 - The new daily hack.
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Wednesday 13th January 2010, 16:48 #3Senior Member
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Thanked 17 Times in 16 PostsThank you for your reply's! I have read the link which I was sent.Can anyone tell me what grade oil goes in the diff/haldex unit?
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Wednesday 13th January 2010, 17:09 #4New Identity
Back in an AWD....Oh the grip!
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Thanked 2,582 Times in 2,051 PostsOur 850 AWDs don't have a haldex unit, thats the electronic one on later AWD volvos. Ours use the mechanical viscous coupling.
And oils:
Oil in Bevel gear = API-GL-5/ SAE 80W
Oil in rear diff = API - GL5 (MIL - L2105B) SAE 801996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
2004 Sapphire Black S60 D5 - The new daily hack.
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Wednesday 13th January 2010, 17:51 #5Senior Member
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Thanked 17 Times in 16 PostsThank you! ps. I like your profile video!!!
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Wednesday 13th January 2010, 22:43 #6New Identity
Back in an AWD....Oh the grip!
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Thanked 2,582 Times in 2,051 PostsNo problem matey.
And cheers, just something I thought I'd try.1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
2004 Sapphire Black S60 D5 - The new daily hack.
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Saturday 20th February 2010, 14:26 #7Senior Member
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Thanked 17 Times in 16 PostsI have just found a rear diff on fleebay! It is from a 97' v70! Is this the same unit as on an 850 awd 97'? It has got 5 day's to go,so I have plenty of time to find out! Thank's guy's!
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Saturday 20th February 2010, 15:30 #8Senior Member
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Thanked 1,005 Times in 711 PostsFit one of these mate...
[ame]http://www.youtube.com/watch?v=MtacFlDUjRM[/ame]KISS Rs
850R manual, Rica 310, IKEA fitted bathroom, H&C running water, Jetex 2.5", pipe rack, cap stand, Forge BOV, circular wheels with full 360 degree rotation, 302mm discs, IPD front and rear anti-roll bars, numerous shiny features, sub-atomic particle accelerator, VTOL capability
...Volvo With Attitude!!!
Also to be seen in a gold Honda CR-V these days...
"It's really fast, and growls like a tiger!"
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Saturday 20th February 2010, 15:55 #9New Identity
Back in an AWD....Oh the grip!
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Thanked 2,582 Times in 2,051 PostsA 97 V70 awd is the closest you're gonna get. Should be the same. Think it was the later XC70s that were different/
1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
2004 Sapphire Black S60 D5 - The new daily hack.
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1996 Volvo 850 AWD
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