13 from 56
●
If the roof panel material is very thin and does not provide adequate holding power within the insulation
material , through holes (Ø 5,5 mm) into the interior of the vehicle are required and galvanised M5 round
head screws of sufficient length must be used.
Make sure that you use a sufficiently strong support that can withstand the bolt tensile forces (large plain
washer or a complete reinforcing plate).
●
Create the holes necessary to secure the mounting plate (Fig. C).
Figure:
C
Alternative
roof fastening *
)
Adhesive area
*)
Not included!
●
In addition to the screwed connection, the mounting plate and roof duct must be bonded to the roof with
adhesive and sealed. This is done using the Sikaflex
®
291 adhesive sealant supplied, which is ideally
suited for this purpose due to its broad range of adhesion.
Before you begin working with Sikaflex
®
291 sealing compound, make sure that you have carefully
read the safety information for Sikaflex
®
products on the safety data sheet and the product data
sheet in this installation manual!
The prerequisite for good adhesive properties is a clean, dry and grease-free substrate. You should there-
fore clean the roof surface with a suitable cleaning agent within a circumference of 17 cm around the drilled
hole and allow the surface to dry thoroughly.
If the surface is painted, ensure that the paint finish is sufficiently well bonded to the substrate.
If the coat of paint is already loose or peeling, it must be removed down to a stable layer in the area to which
the adhesive will bond. If you have any doubts concerning the adhesive characteristics, consult a paint and
lacquer specialist, or the manufacturer of your vehicle.
Under certain circumstances, it may be necessary for you to improve the adhesive characteristics of the roof
surface by pre-treatment with a cleaning agent available from specialist dealers (e.g. Sika
®
-Cleaner) or a
primer (e.g. Sika
®
Primer).
The procedure for gluing the mounting plate is as follows:
●
Before starting adhesive work, note that the optimum processing temperature of materials to be glued
and the adhesive sealant is b15 °C and +25 °C. Prepare all necessary fastening elements and
tools.
●
Prepare the tube of adhesive sealant in accordance with the instructions enclosed with the tube.
●
Remove the roof gland (Fig. A) and apply the adhesive sealant evenly to the underside of the roof gland
flange.
● Replace the roof gland in the drilled hole and press it firmly against the roof of the vehicle.
