850 Front Wheel hub bolt question

lcc014 · Post by **lcc014** » 11 Oct 2019, 11:57

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

Post by **misha** » 11 Oct 2019, 12:04

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.

lcc014 · Post by **lcc014** » 11 Oct 2019, 12:31

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

Post by **abscate** » 11 Oct 2019, 14:35

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

lcc014 · Post by **lcc014** » 11 Oct 2019, 15:07

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

Post by **abscate** » 11 Oct 2019, 20:57

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

lcc014 · Post by **lcc014** » 12 Oct 2019, 07:00

Got it, thank you.