© 2014 SeaStar Solutions
Optimus Installation Manual, Rev. E
5-17
5.4.1 Ground Strap Installation
SeaStar Solutions strongly recommends use of a ground strap on
any outboard hydraulic steering cylinder with an exposed shaft where
the vessel will be used in salt water. This ground strap will provide
added protection against corrosion caused by stray current.
• Install ground strap to cylinder on
opposite
side from Rudder
Reference Unit cable exit as per Figure 5-18.
• Install cylinder and support rod nuts, torque to the following
i) cylinder shaft nut = 33 ft.lb.
ii) support rod shaft nut = 45 ft.lb.
• Route ground strap UNDER the tilt tube and attach loose end of
strap to the port side lower midsection steering bracket bolts
using the correct fasteners.
• Ensure there is enough slack in the strap to allow the engine to
pivot freely in ALL trim/tilt positions and throughout the entire
steering range of the engine.
FOR SALT WATER APPLICATIONS
ATTACH SMALL
TERMINAL
GROUND STRAP ROUTED '
UNDER
'
TILT TUBE =
CORRECT
YAMAHA ENGINES
USE M6 X 1.0 FASTENERS
(INCLUDED IN KIT)
EVINRUDE (BRP)
USE FASTENERS ALREADY
INSTALLED IN STEERING
BRACKET HOLES
ALL OTHERS
USE 1/4"-28 FASTENERS
(INCLUDED IN KIT)
RE-USE THIS
WASHER
GROUND
STRAP
GROUND STRAP ROUTED '
OVER
'
TILT TUBE =
INCORRECT
GROUND STRAP MUST BE ROUTED ON
OPPOSITE SIDE FROM EXIT OF RUDDER
REFERENCE UNIT CABLE
RUDDER REF. CABLE
MIDSECTION
STEERING BRACKET
HOLES
CYLINDER SHAFT NUT
TORQUE TO: 33 ft.lb
SUPPORT
ROD NUT
TORQUE TO:
45 ft.lb
LARGE MIDDLE
TERMINAL
MEDIUM SIZED
END TERMINAL
DISCARD
THIS
WASHER
Figure 5-18.
notIce
ensure ground strap is routed
‘under’ the tilt tube. Installation
of the strap ‘above’ the tilt
tube may lead to a hang up, or
restriction.
cautIon