You shouldn't have to mess with the hub or brakes
to do anything to the trunnion. After you disconnect
the bolt that holds the trunnion to the lower A-arm,
the trunnion simply unscrews from the vertical link
(the part that holds the hub).
The trunnion-to-A-arm connection includes a bolt,
a nut, a metal sleeve, a couple of plastic sleeves,
and some metal discs and O-rings for sealing.
You can get a kit to replace all of them once.
Usually the plastic or metal sleeves are worn out
or seized up. If the joint is ultra-worn-out,
the brass trunnion itself might have started to get
worn, but this is unusual. The main wear area
for the trunnion is the threaded hole where the
vertical link screws in to it (and swivels when you
steer). That joint holds up the weight of the car!
If it gets very worn out, the vertical link could
pull out of the trunnion, and the suspension would
collapse.
(You can also replace the rubber seal at the top of
the trunnion, where the vertical link screws in).
Doug Braun
'72 Spit
--- Shane Sizemore <c0ssizem@yahoo.com> wrote:
> Hey Guys,
>
> I am in the middle of replaceing shocks/springs/ball
> joints on my 1975 Spitfire and I noticed I need to
> replace more. My trunions are loose where they
> attach
> to the lower A-Arm. Should I replace the whole
> trunion
> or just the bearings/washers and stuff on the inside
> that connects to A-Arm? It looks like I could do
> that
> without removing the Hub but if I replace the whole
> trunion (not sure if that is necessary) I would have
> to pull the hub off.
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