Boom suspension

Various areas of the boom may need adjusting from time to time as wear naturally takes place. It is important to keep the boom adjusted correctly to get the best life and performance from it.

You should also thoroughly inspect the boom from time to time for any signs of fatigue or cracking. It is much easier to repair a cracked boom than it is a broken one.

Boom suspension

The boom vertival suspension is provided by a series of "Belleville" washers at the base of the main lift ram (indicated right). These should be checked regularly and replaced as necessary. They will eventually wear, allowing the main lift ram to extend through the bottom of the frame.

Height mast / slide frame.

It is important that movement between the sliding frame and the height mast should be kept to a minimum. If the movement becomes too great the booms will not clear the front supports by an adequate margin when you are folding them in.

There are nylon wear pads inbetween the height mast and slide frame, 4 at each side. Check that these are O.K. then the slide frame needs adjusting by the two adjusting slides fitted to the offside of the frame, one at the top and one at the bottom.

1) Slacken off the two locking nuts at the top of the frame.

2) Keeping the spanner on each nut turn the Allen stud to push the slide bracket up to the height mast - do not over tighten.

3) Re-tighten the two locking nuts.

4) Repeat with the lower bracket.

5) With the booms open lift the boom up and down to check that the carriage does not bind. If it does try again.