Hilux 2018 Squealing CV joints after GVM upgrade

Submitted: Saturday, Oct 17, 2020 at 13:09
ThreadID: 140647 Views:808 Replies:2 FollowUps:0
chasing some advice on a squealing CV Joint on a Jan 18 build Hilux Sr5, The vehicle has had a Dobinson GVM upgrade to 3500kg, over the last 40k km, there has been a pronounced squeal develop, specifically at idling speed,
Toyota were a nightmare to deal with, there response to the noise was 3 times attributed to the Engine Drive belt, and if you could believe, was told last week after the Recall for and fitment of a new DPF, that that was where the noise was coming from and was now Fixed!!
I obviously didn't take that as an answer and subsequently have had it back and have been told that the Suspension upgrade is the problem, CV boot had allowed dirt etc. to enter and that was causing the squeal. Since cleaning and repacking with Lube, Noise has stopped.
Question is, I have been advised this will happen again, Has any one had the same issue, and if you did, What would you recommend? Fitting New Upper control arms e.g. Black hawk and answer?
Thanks All, Appreciate constructive advice
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Reply By: Member - Cuppa - Saturday, Oct 17, 2020 at 13:24

Saturday, Oct 17, 2020 at 13:24
I could be way off, but just in the past day or two was looking at a photo on another forum of a different vehicle altogether where significant weight removal had seen the the chassis upward sit noticeably higher & this had resulted in the prop shaft sitting up at an angle, so much so that the universal joint was binding up a little. Perhaps something similar has happened to your CV joint with the new springs? Not that I'm familiar with the hilux setup.
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Reply By: Frank P (NSW) - Saturday, Oct 17, 2020 at 14:42

Saturday, Oct 17, 2020 at 14:42
Did the GVM upgrade give you much of a lift? An excessive lift will upset driveline angles (CV's at the front, unis on the tailshaft.

I wouldn't have thought they'd squeal, though.. Unis (in the rear) can get choppy and you'll feel vibration, but I would think no noise.

CVs also wouldn't squeal IMO. They could clunk a bit before failure, or fail catastrophically with a boot full of power at a high angle, like full lock, but not squeal.

And when you say "particularly at idle", is that with the car not moving? If so, the noise would have nothing to do with the driveline..

But you have said "Since cleaning and repacking [the CV] with Lube, Noise has stopped." So was there a split boot that let dirt and water in? If so that could be the culprit. The CV may be compromised despite being quiet now.

With a lift over about 45mm you may have to consider aftermarket upper control arms for the front for wheel alignment. That won't correct drive angles on the CVs, you may need a diff drop kit for that. And if your vehicle has a centre bearing on the tailshaft, adjusting that with spacers and perhaps wedges to tilt the rear axle. That was certainly the case with my BT50 and is not uncommon with other makes.

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