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9.3.3 Greasing of Telescoping Booms
Glide surfaces of the telescoping booms (bottom surface, picture 18) should be greased with water
resistant grease (e.g. Mobil XHP 222) during monthly greasing. The grease should be applied on the
bottom surface of both middle boom and extension, on a surface area of approximately 30 mm wide
measured from each side edge and for the whole visible length of the booms when the telescope is
fully extended (picture 19). Apply only a thin layer (< 1 mm) of grease on the surface by using a brush
for example.
Figure 18 Width of the greased surface on Middle Boom and Extension highlighted with red lines
9.3.4 Greasing of the Position Sensor Pins on the Outriggers
The position sensor pins on the outriggers should be cleaned and greased with water resistant (e.g.
Mobil XHP 222) during the yearly maintenance of the access platform. The pin is removed from the
outrigger by opening the locking screw on the end of the outrigger (figure 19, A). The pin is moved by
a spring which is to be removed before the greasing. Apply only a thin layer (< 1 mm) of grease on
the surface of the pin by using a brush for example. After greasing install the spring back on the pin
and place the pin back on the outrigger and lock carefully it with its screw.
Figure 19 Outrigger position sensor pin locking screw (A) and outrigger limit switch location (1)
