B1a Drive Installation
The design of the Type R Autopilot Drive System gives a high degree of flexibility in
the location of the drive unit relative to the steering mechanism, however factors
such as the optimum steering cable route and also the length of the steering cable
(6ft / 1.8m standard, other lengths available) will influence the final location.
It is recommended that the steering cable connection is the final stage of the
mechanical installation, but it is advisable to take into account the points raised in
section B8 regarding steering cable routing when planning the drive unit location.
i) Position the drive unit in the final location. Verify that there is sufficient clear-
ance for the steering cable entry and the spent cable tube, as well as access
for the electrical connections.
ii) Although there are no loads transferred to the drive unit mounting when the
autopilot is in operation, the selected location should be sturdy enough to
support the drive unit.
iii) The drive base plate can be fitted in two possible orientations - perpendicular
or parallel. Assemble the base plate to the drive using the most suitable ori-
entation for the installation and torque the fasteners to 30-35in-lb (3.4-4.0Nm).
iii) Mark out the fixing pattern from the drive base plate and drill appropriate
sized pilot holes into the mounting structure (Fig B3). The mounting holes
are suitable for
1
⁄
4
in or 6mm fasteners.
iv) Position the drive unit and install using suitable fasteners. Ensure they are
tightened securely.
7 of 44
Subject to change without notice
OC15269 REV F
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Fig B3 - Mounting plate drilling dimensions
