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Procedure:
Determine the mounting location for the actuator, shown in figure
method depends on whether the tiller arm length is already set:
o Tiller arm length is not yet set: determine the tiller arm length
(dimension A) and foot bracket location (dimension B) from table 1.
o Tiller arm length is already set: calculate the foot bracket location
(dimension B) using the equation:
B = AcosD – 1.125
Where: A is the tiller arm length
D is the steering angle from straight ahead to hard over
The value of cosD for the most common steering angles is tabulated in table 1.
Model
25°
EA30xx
A
9.46"
240 mm 189 mm 203 mm 147 mm 177 mm 116 mm 158 mm
12860 in-lb
1453 Nm
cos25 = .91
EA33xx(C)
If space and geometry allows, mount the actuator as shown for EA30xx. In wakeboat applications,
space constraints may prevent mounting the actuator as directed. Such cases cannot be
adequately covered in this manual — please contact Dometic for assistance.
Table 1.
Once you've determined the foot location, test fit the actuator and check:
o there is clearance around the actuator for articulation
o there is at least 5.5" clearance at the harness connection to accommodate
the minimum harness bend radius of 3.5" (89mm).
o vertical alignment of shaft and tiller is within 5° as shown in the inset of figure
Mount the actuator foot using four 5/16" (8 mm) stainless steel fasteners. Use
shims below the foot if necessary to correct vertical alignment. Through-bolting
with self-locking nuts is recommended. Torque to the fastener manufacturer's
recommendation for material and class of fastener.
Pin the actuator to the foot. If the pin is vertical, install it with the flange up such
that the pin would not fall out if the locking cotter pin was not correctly installed.
6
Steering Angle
30°
B
A
7.45"
8.00"
5.80"
10390 in-lb
1051 Nm
cos30 = .87
Electric Inboard Steering Actuator
35°
B
A
B
6.97"
4.58"
8565 in-lb
968 Nm
cos35 = .82
. The
2
40°
A
B
6.22"
3.64"
92 mm
7150 in-lb
808 Nm
cos40 = .77
.
2
EN
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