knock knock

[delrazor]

In the last couple of days my van has developed a knock in the front left wheel.
It is every revolution and is not subtle. I went back to the tyre place and they took the tyre off the rim to see if there was something inside. Nothing. they balanced it again and put it on.

Next i went to the brake place to see if there was something amiss. Nothing really showed up inside the drum.

Next I pulled off the hub nut, checked the bearing, races and regreased and re-assembled.

Next I shaved a little off the ends of the spigot wheel nuts as it looked like they were a tiny bit too long, preventing the wheel from being bound evenly to the drum. Noise continued.

Put the old wheel on with the old wheel nuts. Still noise but quieter.

Swapped the two front mags. The noise may have changed sides, but I was delirious by the time i drove home and had my window open, so who knows.

next I raised the front wheels and spun them. Unlike earlier in the day, the noise was not detectable in either wheel. Only under load.
I kind of ruled out ball joints etc as gently spinning the wheel up on the jack would still make a considerable knock each turn.

naturally I would have been asking questions earlier but the site was down.

Has anyone experienced this knock?
can an out of round drum cause this without any noticable shudder under braking?
Whats wrong with my beddy?

cheers
derek

[obsession]

check the long bolts that the wish bones are bolted to they are cast and some times the bolts holding it break or become sloppy .

[Ian]

Had a problem like that myself a while ago, a persistant knock on the left hand side, found out it was a broken suspension spring caused maybe by the rough edge of the roads? regards Ian

[ben]

make sure your bearings are done up tight..

ben

[delrazor]

Yeah, i'll take another look at the bearings.
when the wheel is raised off the ground and turned very slowly, the knock is still audible once every turn.
to me this may (not convinced) rule out some of the other components outside of the wheel bearing and brakes.
For reference, what is a good torque setting for spigot wheel nuts (no taper, just washer)?

I am off to unadjust the brakes and see if it goes away

derek

[Warren]

Have a look to see if the wheel weights are not hitting on the disc caliper

Warren

[SkippyThBushKangeroo]

  razer. . u hav been visited by th Beddy gremlin 

[delrazor]

No wheel weights hitting anything. (drums, btw)
gremlin, yes.

[Merlin]

could be a nut loose behind the wheel lol seriously it sounds like a squared bearing to me    Cheers Neil

[jimsvan]

you sure it sounds like its coming from the front u sure in not on the rear