Raymarine M81120 Installation Manual page 4

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Hydraulic Pump - Installation Guide
Introduction
Product description
Welcome to the installation guide for the Raymarine hydraulic pump
(also known as the Raymarine reversing hydraulic pump).
This product is intended to operate the boat's steering mechanism as
part of a Raymarine autopilot system. It is primarily designed for use
on boats with an existing hydraulic steering system. Alternatively,
you can use this pump on a boat with mechanical steering in
conjunction with a secondary steering ram.
The hydraulic pump contains a precision gear pump and a check
valve driven by a servo motor.
Figure 1: Main parts of a typical hydraulic pump
Contents
This guide contains:
1
2
3
Ram ports
Reservoir port
Gear pump
Product specifications
Installation instructions
Maintenance information
3
Motor
Check valve
Mounting foot
D5175-1
page 4
page 5
page 17