Great Planes Shoestring GP/EP ARF - GPMA1328 - Manual (Page 14)

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2. Slide a 5/32" [4mm] wheel collar onto each axle followed
by a 3" [76mm] wheel and then another 5/32" [4mm] wheel
collar. Mark the location of the threaded holes in the wheel
collars onto the axles. Use a fi le or rotary tool such as a
Dremel to grind fl at spots at the marks on the axles.
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3. Reinstall the wheel collars and wheels onto the axles.
Thread a 6-32x1/4" [6.4mm] socket head cap screw into each
wheel collar and tighten the screws against the fl at spots on
the axles using threadlocking compound. Be sure that the
wheel rotates freely on the axle. Oil the axles if necessary.
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4. Attach the wheel pants to the landing gear legs using
four 4-40 x 1/2" [13mm] machine screws, four #4 fl at washers,
four #4 lock washers, and thread locking compound.
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5. Attach the landing gear legs to the fuselage using four
6-32 x 5/8" [16mm] SHCS, four #6 fl at washers, four #6 lock
washers, and thread locking compound.