While you are on I would recommend changing the ball joints that are screwed into the steering ram. They will be nearly as tight as that trunnion clamp. You will probably need to give the end of the ram some heat. Make sure you extend the ram and wrap some wet rags between the heat and the seals in the cylinder. It is a lot easier to do while the axle frame is off.
the ball joints screwed into ram, make sure they screw in with the mating surface a tight fit all round.
we had one break on the handler. the metal had crystalized, . looking at the surface, it looked as if it only touched on one side, the slight bending overtime causing it to let go.... After much head scratching, hammer and punch, swearing etc, a mag drill on the chassis was perfect to drill out in place