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'98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by cuhfs » Sun Jul 17, 2016 9:02 pm

An automotive stethoscope may give you better accuracy versus the hose method. I think they're cheap and even at harbor freight too.
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by 850 LPT » Mon Jul 18, 2016 1:16 pm

I would take the serpentine belt off and then listen.

If it is a bearing in the tensioner, alternator, compressor or ps pump, it will go away. If the noise is gone spin these components by hand and listen / feel.

Hope this helps, Dirk
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by E Showell » Mon Jul 18, 2016 6:43 pm

Never removed the serpentine belt (I guess I must have years ago for some cylinder head work but have no recollection of same). Big job?
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by scot850 » Mon Jul 18, 2016 7:21 pm

It isn't too hard Evan. On the serpentine belt tensioner there should be one of 2 methods to 'un-tension'. Look on the tensioner for a square hole. There is a long lever you can buy cheaply that inserts into the square hole to allow you to de-tension enough to remove the belt. The tool below from IPD also has a wire lever that then locks the tensioner out of the way by passing through 2 holes when aligned:

https://www.ipdusa.com/products/5830/10 ... -belt-tool

You can also use a 1/2" or 3/8" (can't recall) socket wrench for this but it may not give enough purchase or may be too deep to get access between the tensioner and the inner fender.

I seem to recall buying a tool cheap at Princess Auto in Canada, but your equivalent would be Harbor Freight. A sturdy nail will do for the locking tool.

Later tensioners use a Torx tool to do this job in place of the handy square hole. Then you need a stubby Torx socket (T50?) to do the job.

#1 thing to do first is to take photos of the path of your serpentine belt as there are 2 ways this can run. The original and the augmented contact at the alternator. Either way take pictures of the route!!

Good luck!

Neil.
2000 V70 R - still being an endless PITA
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by E Showell » Sat Jul 23, 2016 2:13 pm

OK so, I made a plumbing cap serpentine belt release tool and have managed to remove the serpentine belt. I have spun the pulleys by hand. Power steering pulley seems OK. Alternator pulley OK as well. Tensioner & idler seem OK. I cannot turn the a/c compressor pulley by hand. Is that how it should be, or should that pulley spin freely as well? I haven't started the car without the belt yet. I was waiting for someone to weigh in on this post. I am fairly certain that I know the answer to my own question -- but hey -- you can't turn the crank pulley freehand. . .

Also, it will be at least a week before I can get to the a/c compressor repair. Can I leave the tensioner locked in the released position with a locking pin inserted, or should I remove the locking pin and allow the tensioner to return to the "at rest" position?
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by abscate » Sat Jul 23, 2016 3:51 pm

The front of the AC pulley is attached to the compressor innards and won't turn

The ridged pulley part should freewheel, if it doesn't.....asked and answered, Counselor.

I wouldn't sweat leaving the tensioner in.
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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by E Showell » Sat Jul 23, 2016 4:20 pm

Ridged part of a/c compressor does not turn. Compressor is toast. I'll see if I can score a good used one at Harry's. Steve -- I may be headed out there next weekend.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)

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Re: '98 V70 base, FWD, 5 speed. Bearing Scratchy Sound

Post by JRL » Sun Jul 24, 2016 11:38 am

C'mon guys either buy or borrow a (automotive) stethescope
2000 V70R Black, 144,000 miles Wife's R.
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