Show whole topic Oct 09, 2013 7:55 pm
Colin M34 Offline
Member
Registered since: Dec 01, 2007
Location: Suffolk, UK


Subject: Re: Play in Marles steering box
Hi Guys,

Now we have established Fred has a "Vintage" Marles box, here are my thoughts. These have a roller cam which is adjusted by slackening off the centre bolt and adjusting it till all the play goes in the centre of the travel. Shims are not required. So how do you get that this?

Undo the stay under the scuttle and the four bolts holding the box on the chassis. Also, unscrew the end cap of the drag link to free the ball joint. There may be other brackets you have to remove as well. The box will then flop around with the wheel on the driver's seat. You may decide to remove it as well. Then wriggle the box up and round till you see the backplate which you can take off when it is uppermost. You will then see the roller cam which you need to adjust.

This is generally a horrible job but at least you do not need to remove the box. However if the shaft is loose it will need re-bushing so everything will have to come out. In this case you will also need to pull off the drop arm. This will be on very tight and will need at least a 10 tonne puller to get it off.

Good luck!

Colin