shudder in steering

[Ford Blitz]

just experienced a steering issue. Travelling at about 60 KPH as I backed off the throttle there was a bad shudder on the steering wheel. Pulled up and started to move again shudder had disappeared. Any clues?
Its a RFSV running the split rims with the standard military Michelin 750x16 tyres.

[Chazza]

Just the usual list; check the tyres; wheel balance; brake rotors; pre-load on the swivel bearings; play in the steering joints; suspension bushes, etc.

Cheers Charlie

[Ford Blitz]

thanks. Its odd was quite violent but has gone away

[john.k]

International C1300s get the shimmys so bad you think you must crash when the hammering breaks something......Wear in the tierod ends ,ball joints,steering pivots ,all contribute .....and it will happen again ,more frequently.

[Ford Blitz]

thanks I will get it checked out

[Young Eric]

I was driving a Range Rover with 4BD1 engine, and it started to shudder and shake the steering wheel so bad that I didn't think I could hold onto the wheel and keep the vehicle on the road, would of been doing 95-100 kph, I pulled up, had a look underneath the vehicle, couldn't see any thing amiss, resumed my journey, didn't happen again. However, after talking with a friend, who had had the same thing happen in a 110 county, with 4bd1, we found that the panhard rod bushes were buggered. Why it did it only once I still have no idea. The bushes, when removed were very soft and the rubber was all broken and cracked. Replaced them, didn't happen again.

[Ford Blitz]

excuse my ignorance what on earth is a  panhard rod bushes?

[Young Eric]

The panhard rod is the bar between the front axle and the chassis, runs parallel with the steering arm. There is a bush at each end, that are pressed in, and bolted in place. The bolt can wear, replace with a high tensile bolt and nyloc nut.

[Ford Blitz]

Thanks I will have a look

[Muesli]

Hi,

I have the same sounding problem. It occurs around 85km/h for me (on an RFSV). Uneven road seems to set it off, and changing speed or turning the wheels seems to stop the vibrations. Had my front wheels rebalanced, did not help. I have installed a new panhard rod last year, but have travelled up FNQ, Cape York etc. from Victoria since (quite hard corrugations, etc.). The problem started after I got back and I rotated wheels/tires.
I am still trying to find the real cause/causes. All joints, etc. seem to be "tight". Could it be a shot steering damper?

Thank you.
Muesli.

[BEARMAN]

If your panhard rod bushes are good it most likely will be swivel preload. And the only way to check is to drop the steering arms and check the swivel turning resistance.

[Ford Blitz]

I too am yet to solve the problem but suspect Bearman is on the money

[john.k]

In an Inter 130,the shaking can be so bad the engine mounts are ripped apart,and you wont find a steering box that hasnt been smashed up inside by the shimmys.

[Muesli]

Thank you Guys. I shall have a look/check it out. 

[Muesli]

Hi Guys.

Many thanks for your help and suggestions regarding the shudder.

I have disconnected the tie rod from the swivel pin housing and found the turning/rotating resistance to be well below the 4kg. so I removed one of the shims from under the swivel pin (see picture attached). The turning resistance then came up to just over 9kg. After reassembly, I took the landy for a drive, and the shudder is gone!

Many thanks again. 

Best regards,
Muesli.