torque for the f/r trunnions

[Jazzman]

Guys,

I am in the process of replacing the rear and front trunnions on the spitfire.

Do you know if the nut needs to be tighten at a certain torque? Haynes suggests so but I do not know how much.

After installing the rear trunnion yesterday night I tighten the bolt till the nyloc nut was at the end of the bolt's thread and there is a slight play still - ie: I can move the bolt half milimeter or so - is this normal?

In addition, could anyone told me the need for the bushes in the rear trunnion from a mechanical point of view? It is interesting to see that there is no mechanical interaction with anything. Just an empty hole filled up with the steel and plastic bush.

Cheers!

[Velocita Rosso]

Trunnion to wishbone bolts....35/38 lbs , should be no play at all, bushes at rear allow to swivel in the vertical links......allows suspension to work properly>

[Jazzman]

Im talking about the rear trunnion, so could it be that the bolt has the thread a tad to short?

I understand that the 35-38 bolt-wishbone is for the front trunnions. Does it make sense to use the same torque at the rear?

[sparky_spit]

Mr Haynes says 45lb/ft (61Nm) for the front and 48lb/ft (68Nm) for the rear.

It could be that you are missing a washer? There should not be any slackness in the bolt. I assume you have the correct trunnion bush kit and sleeve?

To answer your second question, the nylon top hat bushes are a tight fit in the trunnion. The steel tube is a sliding fit in the bushes. When you do the bolt up tight, the sides of the vertical link (rear) or wishbone (front) pinch the tube so that, as the suspension moves up and down, the tube can rotate in the bushes freely, allowing unhindered suspension movement. The tube should not move in relation to the vertical link (rear) or wishbone (front).

[Jazzman]

Thanks guys!

I was so exited about doing it quickly that I forgot to check the first page of the chapter with the torques... :B

The job is done (washer included  :P) , albeit with some caveats: how on earth are you suppose to tighten the bolts under tension without a pit?

As a result, the only ones I have re-tighten properly are the diff - clamp plate.

How do you do it?