Caterham Seven User Manual Page 209

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Figure 182: Front fixing boss location
1. Front hoop saddle bracket
2. Fixing bolt in threaded bush
3. Chassis top tube - sill
Warning
Use appropriate eye protection whilst
carrying out drilling operations.
If a 7/16" hole is not visible in the side
panel, drill out the 5/32" rivets holding the
top edge of the trim panel surrounding this
point and ease the trim panel away from
the chassis until the exact location of the
mounting boss is identified. Drill a 4 mm
pilot hole through the trim panel then
enlarge to give clearance for a 7/16" bolt.
Ensure that the inner thread in the
mounting boss is not damaged during this
process.
Take a 10 mm drill bit and pass it through
the threaded boss until the pointed end of
the drill touches the inside of the outer
side panel. Gently tap the end of the drill
bit until a small witness mark is visible on
the outside of the side panel along the
centre line of the bush. Using a centre dot,
dot the outside of the side panel on the
witness mark and drill a 4 mm pilot hole,
then enlarge such to give clearance for a
7/16" bolt. Ensure that the inner thread in
the mounting boss is not damaged during
this process.
Repeat this process on the other side of
the car then run a 7/16" UNF bolt into both
bosses to ensure the threads are clean
and undamaged.
NOTES
1. Do not re-rivet the interior side panels
at this stage.
2. If you intend to run sill protectors, you
will need to remove these prior to fitting
the cage. They will also require trimming
at the forward end to enable them to be
refitted around the cage.
3. You are now ready to attach the roll
cage to the chassis however due to the
size and weight of this part it is strongly
recommended that you obtain further
assistance as an extra pair of hands to
help guide the cage into position could
prevent damage.
17.4.2) Roll cage fitment
Offer the cage up to the car and gently
rest in place. Insert the bosses at the
bottom of the rear hoop into the bucket
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