13
Securing bolts
Attach the mounting foot with four stainless steel M10 (
3
/
8
inch) bolts and lock nuts/lock
washers.
Note:
Always mount the drive as securely as possible to make sure it performs reliably and remains cor-
rectly aligned.
Connecting to the steering system
This drive produces a considerable amount of force, so you must ensure that your tiller arm or
rudder quadrant can cope with the peak thrust specified in the
Table 1-1, Drive specifications
.
Use one of these methods to attach the push rod to the rudder stock:
1.
Independent tiller arm
: we recommend that you attach the linear drive unit to the
rudder stock via an independent tiller arm (the Edson and Whitlock companies offer
standard fittings for their steering systems).
2.
Steering linkage tiller arm or rudder quadrant
: in certain cases, you may be able
to attach the push rod to the same tiller arm or rudder quadrant used by the main steering
linkage. Consult the steering manufacturer before you modify the rudder quadrant.
Attaching the rod end
Use the supplied tiller pin assembly to attach the rod end to the tiller arm, at the tiller arm
radius shown in
Figure 4
.
1. Attach the tiller pin to the tiller arm:
• insert the tiller pin through the tiller arm hole, so the flange remains above the arm
(see
Figure 6
)
• make sure that the tiller pin is a tight fit in the tiller arm
• use the supplied lock washer and fully tighten the lock nut
Note:
If necessary, you will need to drill a 13 mm (0.52 in) hole in the tiller arm at the radius shown in
Figure 4 .
2. Attach the rod end to the tiller pin:
• place the rod end onto the tiller pin
• secure with the supplied washer and R-clip (see
Figure 6
)
CAUTION
Equipment strength
Consult the steering gear manufacturer if you have any doubt about the
strength of the existing tiller arm or rudder quadrant.
