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850 Front Wheel hub bolt question

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
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

lcc014
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850 Front Wheel hub bolt question

Post by lcc014 » Fri Oct 11, 2019 11:57 am

Question about those 4 E14 bolts which holding the front wheel hub/bearing in 1995 850. Can I use impact wrench to get them loose ? When I replaced the driver side wheel hub back in 2011 (240k mimles), I was able to undo those 4 E14 bolts with 1/2" ratchet. Now, I am planning to replaced the passenger side wheel hub. This wheel hub was replaced by dealer back at about 100k miles. My car now has 389k miles. I am thinking that those 4 E14 bolts may be harder to unloose due to rust. I don't want to strips these 4 E14 bolts.

Can I use impact wrench to unloose them ? I bought a couple 1/2" E14 impact sockets (different brands) and found that one of them is more tighter fit than the other one. I am going to use the tighter fit E14 impact socket if impact wrench is fine to undo these bolts.

Thanks,

Ching-Ho Cheng
Last edited by lcc014 on Fri Oct 11, 2019 12:32 pm, edited 1 time in total.



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misha
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Re: 850 Front Wheel hub bolt question

Post by misha » Fri Oct 11, 2019 12:04 pm

I would try to brake that torx e14 loose with a long braker bar....with continuous and steady pressure.
I'm affraid that impact wrench will round the bolts.
Clean the bolts where they meet the hub with wire brush to remove outside rust...spray some penetrating oil or wd40...soak with one of those....and then attack.


'97 850 2.5 20v /fully equipped/ Motronic 4.4 / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

lcc014
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Re: 850 Front Wheel hub bolt question

Post by lcc014 » Fri Oct 11, 2019 12:31 pm

Okay, I will not use impact wrench then. Volvo changed from E14 to to hex bolts in later model years.



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abscate
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Re: 850 Front Wheel hub bolt question

Post by abscate » Fri Oct 11, 2019 2:35 pm

If you can get them clear off the car, 60 seconds warming with propane will bust up the corrosion better than either impact or breaker.

The Volvo fasteners are really high quality and won’t strip


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lcc014
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Re: 850 Front Wheel hub bolt question

Post by lcc014 » Fri Oct 11, 2019 3:07 pm

Will have the propane ready. Will the propane heat affect the outer tie rod rubber boot or control arm ball joint rubber boot ?

Ching-Ho Cheng



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abscate
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Re: 850 Front Wheel hub bolt question

Post by abscate » Fri Oct 11, 2019 8:57 pm

You can keep a finger on the ball joint to make sure it doesn’t get too hot


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lcc014
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Re: 850 Front Wheel hub bolt question

Post by lcc014 » Sat Oct 12, 2019 7:00 am

Got it, thank you.



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