GRAUPNER Skalar, Manual

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elektro
Skalar
21
3. Assembling the main rotor head
(bag SKA-10)
Der Hauptrotorkopf wird entsprechend den Abbildungen zusammengesetzt, alle Kugellager sind
zu fetten.
3.1 Preparing the blade holders
First attach the two linkage balls to the mixer levers 4448.132A using M2 x 10 screws, then
press the ballraces into both sides, not forgetting the brass spacer sleeve between them.
Apply a little thread-lock fluid to the M3 x 20 screws along the entire length of the threads, and fit
these through the ballraces and the spacer sleeve; take care that no thread-lock fluid gets into
the bearings. Screw the mixer levers to the blade holders in this way, and check that the brass
spacer washer is fitted between the inner ballrace and the blade pitch arm. The mixer levers
should now rotate freely in their bearings; if necessary lubricate them with silicone oil.
Press the radial ballrace 4607.31 and the bearing shell of the combination bearing 1254.13 into
the blade holders 1252.11 as shown in the drawing, pushing them in as far as they will go.
At this point you should check that the ballraces 4607.31 in the prepared blade holders can be
fitted easily onto the blade pivot shaft 4607.29; you may need to rub down the blade pivot shaft
using fine abrasive paper (600-grit or finer) until the bearings are a sliding fit.