Section 3 - On the Water
90-879172181 eng FEBRUARY 2011 Page 67
Steering and Trim—Manual Override
The steering and trim system operate using a hydraulic manifold fitted with control valves. If a malfunction occurs in the manifold
for the steering and trim system, VesselView should display a fault code. The steering actuator, trim cylinder, or both may not
respond to helm control resulting in the loss of normal steering or trim control.
!
CAUTION
A fault in the steering control valve or trim control valve will temporarily cause a malfunction of the steering or trim helm controls
on the affected drive. If you lose normal steering or trim control, reduce speed to operate the boat safely.
The table provides a matrix of related drive and trim tab information in the event of a malfunction or failure.
Failure Mode Fault Codes
Drive or Tab
Position
Engine Management Boat Speed
Steering
control valve
stuck
Steering Spool Stuck
Fault
Drive Steering
Response Fault
Drive Steering Control
Fault
Stuck in any
position
• Fault code is seen on
VesselView
• Drive is in reduced
operation mode
• Engine throttle
percentage is reduced
The maximum boat speed that can be
achieved on a single engine, with one
engine shut down, or with one drive that
is not steerable, will vary on different
models. Except in an emergency,
normal operation on a single engine
should not exceed 50% throttle.
Trim tab
control valve
stuck
Tab Spool Stuck Fault
Drive Tab Control
Fault
Drive Tab Response
Fault
Stuck in any
position
No effect on engine
management
Proceed at a reduced safe operating
speed within the duty cycle.
In an emergency, if a steering or trim control valve is stuck, it may be possible to clear the steering fault code by manually overriding
the system. A decal with information about the location of specific control valves is affixed to the drive cover (if equipped) and on
the bracket attached to the steering manifold on all models. Refer to the Procedure for a Stuck Steering Control Valve or the
Procedure for a Stuck Trim Tab Control Valve for additional information.
a - Decal
b - Hydraulic manifold for steering and trim
To Next Page
Loading...
Need help?
General
