CHAPTER 51
PAGE 31
PAGE DATE: 7. July 2010
MAINTENANCE MANUAL EXTRA 300LT
N O T E Lay out the required number and size of fabric pieces
on a piece of colored plastic foil and wet them with
resin mixture. Subsequently position them on the repair
area.
I M P O R T A N T Remove the plastic foil after each positioning process.
The repair area has to be cured under condition of vacuum
bagging. Proceed as follows:
1 Apply peel nylon fabric on the last repair fabric layer.
2 Perforate a clean, thin plastic foil with a thick needle
(max. spacing of holes: 20mm x 20mm) - mainly in the
area of the honeycomb - and lay it on the repair area.
Figure 9 Repair of minor damage
b) Large damage
If the extent of the damaged area exceeds 10 cm (4 inches)
a large damage repair is required.
Carefully trim out the damaged portion to a circular or oval
shape.
Prelaminate a backing plate from two layers of glass fibre
fabric and resin mixture, which must be approx. 20 mm
larger than the damaged area. Apply peel nylon fabric as
external layer. Sandwich the resin wetted layers between two
sheets of plastic foil. Work the excess resin out and allow the
plate to cure at elevated room temperature for 8 hours on a
flat surface or a plasticfoil-covered surface of the proper
curvature near the damaged area, or the same location on a
comparable undamaged part.
Following the curing cycle remove plastic foil and peel
nylon fabric. Bond the backing plate to the inside using a
mixture of resin and cotton flocks, and adapt to the contour.
Cure the bonding at elevated room temperature for 8 hours.
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