Steering Wheel Shake and kick back on brake pedal

[celtictigress]

Dunno how else to describe this but it feels as if the balancing needs doen, but then I must have had this done at least 5 times and still the steering wheel STILL shakes at about 65 then goes at 70mph (ish)

I've had the front discs replaced and that's reduced the kick back on the brake pedal but its still there (only slight now and I can live with it)

Checked all the wheels and they are not buckled, my mechanic says its not a big deal and just live with it but it's doing my head in.

Any ideas?

[Ron Miel]

Worn drop links and/or bushes, incorrect steering geometry, tyre flat spots (has it stood idle for long periods?), buckled wheel (OK, not yours), deformed out-of-round tyre (which tyres and wheels?), shock absorbers, tyre pressures high/low, even load distribution issues........etc., etc.?

One issue affecting almost all motors nowadays (unless very wide track), which daveblueozzie made me aware of, based on experience with their driving instruction motors - do you attempt to straddle "oblong" road humps, or do you slow down and gently ride across them? Straddling them repeatedly is known to repeatedly screw up steering geometry, as the wheels tend to be forced apart.

Bongos do seem to be more than usually sensitive to any of the above.

Good luck.

[The Great Pretender]

I would go with Ron's first suggestion and fit new drop links and bushes to the anti roll bar, cured my shimmy.

[mister munkey]

Another common problem I find with the vans at work, mostly Sprinters/Crafters is out of shape tyres.

The steel belts in the radials warp either due to age, wear or kerb abuse. This gives pretty much the same effects as out of balance wheels but is harder to spot.

Eventually you can see uneven wear around the outer edge grooves.

Not seen this mentioned on here that often but in the commercial world, its a regular fault.

Worth a look at least.

[Northern Bongolow]

good point there chris.
also bleed the brakes all round.as the couple of cc's nearest the caliper can get blackened with age.if you have not bled them for a good couple of years i would be tempted to replace all the fluid,as it only has a good life of a couple of years.
it sounds to me like fluid bounce if its being felt up the peddle,cheap to cure to!!.

[celtictigress]

bushes drop links etc are all fine and I don't straddle speed bumps.

I should have said that this issue only started when I put new alloys on it. I've changed teh front tyres but perhaps there is an issue with the back tyres. I'll also get the brakes bled

Many thanks guys

[mister munkey]

Ahhhh!



Possibly need spigot rings.

http://www.igmaynard.co.uk/bongo/forum/ ... gs#p411821

[celtictigress]

Ahhhh!



Possibly need spigot rings.

http://www.igmaynard.co.uk/bongo/forum/ ... gs#p411821

It could well do!! I'll get the wheel off and measure it!

Thanks again guys

[2sticks]

Ahhhh!

Possibly need spigot rings.

All wheels should be centralised on the hub spigot and not the wheel nuts.
If you have oversize centre holes in the wheel it's almost impossible to
centre the wheel exactly using the wheel nuts only.

Some tyre fitters may balance the wheels to zero and then use a hammer gun
to fully tighten the first wheel nut completely before winding down the
others, this can put the wheel off centre even if you have used the proper
plastic spigot rings.

If you need to use spigot rings then replace the wheel nuts properly. Take up
the slack on each wheel nut until it just grips the wheel and then gradually
tighten each wheel nut to it's final torque.

[celtictigress]

Ahhhh!

Possibly need spigot rings.

All wheels should be centralised on the hub spigot and not the wheel nuts.
If you have oversize centre holes in the wheel it's almost impossible to
centre the wheel exactly using the wheel nuts only.

Some tyre fitters may balance the wheels to zero and then use a hammer gun
to fully tighten the first wheel nut completely before winding down the
others, this can put the wheel off centre even if you have used the proper
plastic spigot rings.

If you need to use spigot rings then replace the wheel nuts properly. Take up
the slack on each wheel nut until it just grips the wheel and then gradually
tighten each wheel nut to it's final torque.

Good advice, cheers for that

[daveblueozzie]

I went to Wheelquick at the weekend to have new tyres on the bongo, Stu said i have the wrong nuts to hold the wheel correctly, I told him Ive had the wheels balanced 4 or 5 times to try and cure the steering wheel wobble to to avail, He got me the correct wheel nuts and not had any wobble at any speed since then, so check your nuts.

[Rob101]

Ours with aftermarket alloys wobbled at 65 mph too - and a wheel balance sorted it for a while. . However, closer inspection showed it should have had spigot rings fitted, and since putting them on, its as smooth as a you like !!

I'd have thought your mechanic would have noticed if you needed them tho !?

[celtictigress]

Thanks folks

The good news is that I measured the hub and it's 65.1 the alloy is 72.1 so def needs a spigot


The bad news is that I'm really struggling to find this size any ideas?

[rita]

Thanks folks

The good news is that I measured the hub and it's 65.1 the alloy is 72.1 so def needs a spigot


The bad news is that I'm really struggling to find this size any ideas?

Hi,

IS the centre bore not 67.1.

[francophile1947]

IS the centre bore not 67.1.

Yes it is 67.1 (or should be!)