Hangar 9 T-34 Mentor 40 ARF Assembly Manual page 28

Section 8: Retract Installation

.Step 10
Install.the.nose.wheel.using.two.4mm.wheel.collars.and.
two.3mm.x.6mm.machine.screws..Apply.threadlocking.
compound.to.the.screws.to.prevent.them.from.loosening.
during.flight.

.Step 11
Use.a.sharp.hobby.knife.to.remove.the.covering.from.the.
wing.for.the.main.gear..Use.a.covering.iron.to.seal.the.
edge.of.the.covering.into.the.opening.
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 
. .Step 12
Position.the.main.gear.retract.in.the.wing..The.coil.in.the.
wire.will.face.towards.the.trailing.edge.of.the.wing..Mark.
the.locations.for.the.mounting.screws.using.a.felt-tipped.
pen.
Note:.It.may.be.necessary.to.sand.the.
edges.of.the.mount.so.it.fits.into.position.
 
. .Step 13
Drill.the.locations.marked.in.the.previous.step.using.a.
3/32".(2.5mm).drill.bit..Work.slowly.to.avoid.drilling.
through.the.top.of.the.wing.