Adjusting the Centre Frame

There needs to be sufficient clearance between the guiding pin of the pendulum arm (A) and the guiding strip (B), if the boom is folded and unfolded. The function of the guiding pin of the pendulum arm is to support and prevent the centre frame from moving rearwards, when the boom is folded in, just before the boom lies on the supports. During this stage, the guiding pin will touch the guiding strip on the horizontal square guiding tube.

A-Guiding pin pendulum arm
B-Guiding strip

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