Mercury MERCRUISER - Steering Systems

Steering Systems
Section 8A - Power-Assisted Steering Pump and Related Components
Table of Contents
Power‑Assisted Steering Components Exploded View..... 8A-4
Hydraulic Diagrams............................................................8A-6
Neutral........................................................................ 8A-6
Left Turn..................................................................... 8A-8
Right Turn................................................................. 8A-10
Description....................................................................... 8A-11
Control Valve............................................................ 8A-11
Axius Steering Cylinder Clearance........................... 8A-11
Power‑Assisted Steering Pump................................ 8A-12
Power‑Assisted Steering Pump Pulley............................ 8A-12
Power‑Assisted Steering Pump Pulley—Removal... 8A-12
Power‑Assisted Steering Pump Pulley—Installation
.............................................................................. 8A-13
Power‑Assisted Steering Pump Assembly.......................8A-14
Steering Pump Assembly Removal.......................... 8A-14
Steering Pump Assembly Installation....................... 8A-15
Replacing the Belt and Adjusting Tension....................... 8A-16
Power‑Assisted Steering Fluid.........................................8A-16
Filling and Bleeding.................................................. 8A-16
Power Steering Fluid................................................ 8A-17
Power‑Assisted Steering Hoses...................................... 8A-18
High‑Pressure Hose (Pump to Control Valve).......... 8A-18
Return Hose (Pump Reservoir to Fluid Cooler)........ 8A-20
Return Hose (Control Valve to Fluid Cooler)............ 8A-21
Power‑Assisted Steering System Tests...........................8A-22
Power‑Assisted Steering System Pressure Test...... 8A-22
Pump Pressure Test................................................. 8A-24
Power-Assisted Steering Pump and Related Components
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 8A-1
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