English axle - knocking noise on cornering & acceleration?
Dear all
I am trying to work out a strange knocking noise from my Fury's standard-spec English axle. On medium to hard acceleration a
'rotational' knocking noise is coming from (what sounds like) the rear hubs. Similarly on tighter bends the noise comes back but much
louder and rather more worrying. In a straight line the noise is absent.
On inspection the propshaft / diff is completely clear of any obstruction. All handbrake cables and rods are securely fastened down. The wheelnuts /
wheels / spacers / drums are all equally tight and secure with no contact with wheel weights or anything obvious.
With the drums off, the hub and shoes all appear normal with secure springs and with no 'play'. I can't see any witness marks to
suggest that something is catching. This includes a lack of any contact between the drum rim and the hub backplate.
I am still generally running the car in (and the shoes are new) so is this just a symptom of a rebuilt axle that needs bedding in, or a badly adjusted
handbrake / misaligned shoes that are somehow 'catching' ?
I have had the car drive around myself in circles in a carpark and the rear drums / hubs appear to be the main source of the noise. I hope it
isn't a classic symptom of a knackered diff..
Sorry if this is all a bit vague but if anyone has had a similar experience and solved it ?
A simple 1st check for the diff - try turning the prop with the handbrake on, there should only be the slightest movement due to the need for a little
backlash in the gears.
Ok thanks - I have the car up on stands tonight and will give it a try.
The drive shaft bearings are both brand new units. In a straight line everything is lovely and quiet with no untoward noises.
My assumption (based on the knocking sound) was the brake shoes somehow catching on the rotating drum, causing them to 'clang' against the
backplate; causing such an audible noise. An uninformed hunch though !
I will strip the whole assembly down and rebuild it (swapping shoes around from side to side just for the heck of it) and see if that solves it. A
bit stumped here so help very welcome.
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Building: running Westfield SEiW with 4AGE 16v
posted on 10/9/15 at 01:39 PM
quote:Originally posted by jeffw
How much does an English Axle move on a Panhard rod?
Answer....lots
JeffW, is that about a good inch or so, judging against your wheel arch extension? i.e plus/minus half an inch from static? What bushes do you have
at each end of the Panhard rod?
quote:Originally posted by JMW
JeffW, is that about a good inch or so, judging against your wheel arch extension? i.e plus/minus half an inch from static? What bushes do you have
at each end of the Panhard rod?
Something like that, certainly 15-20mm in each direction is the clearance I need in the arch. The car has adjustable Panhard with the standard
Metalastic bushes that Fury/Sylva use. If you go to rose joints you would need to run a rear ARB to replace the effect the bushes has.
