Raymarine Type 1 Hydraulic Autopilot Pump, 80-230cc, 4.9-14 cu in

Overview

The Raymarine Type 1 Pump is a reversing hydraulic autopilot pump for boats with existing hydraulic steering systems. It is made for steering ram capacities from 80 to 230 cc, or 4.9 to 14.0 cubic inches, and is offered in 12V and 24V versions so it can match the vessel’s DC system.

This pump connects into the boat’s hydraulic steering lines and moves steering fluid when commanded by a compatible Raymarine autopilot control unit. For owners replacing a failed pump or building an Evolution autopilot system, the main fit checks are the steering cylinder volume, system voltage, and the compatible ACU for the selected variant.

Key features

• Type 1 reversing hydraulic pump for boats with existing hydraulic steering.
• Fits steering rams with 80 to 230 cc capacity, equal to 4.9 to 14.0 cubic inches.
• Available in 12V and 24V versions for matching the vessel’s electrical system.
• Peak no-load flow rate of 1000 cc per minute, or 67 cubic inches per minute.
• Works as the hydraulic drive unit in a Raymarine autopilot system controlled by an Evolution ACU.
• Suitable for single or double ended hydraulic rams when the ram capacity is within the Type 1 range.

Variants

This product is offered in two voltage configurations for Type 1 hydraulic steering installations.

The variants differ by DC system voltage and compatible Raymarine ACU use. Both are Type 1 hydraulic autopilot pumps for steering systems with 80 to 230 cc ram capacity.

• M81120: Voltage 12V. This version is for 12 V DC boats and is listed for Raymarine ACU-150 or ACU-200 systems.
• M81119: Voltage 24V. This version is for 24 V DC boats and is listed for Raymarine ACU-200 systems.

Compatibility and fit

Fit is based on the hydraulic steering ram capacity, not simply on boat length. Before ordering, check the steering system documentation or the markings on the hydraulic cylinder to confirm that the ram volume falls within the 80 to 230 cc Type 1 range.

The pump is part of an autopilot drive system and is not a stand-alone steering replacement. It should be matched with the correct Raymarine course computer or Evolution ACU, control head, heading sensor, and any other required autopilot components for the vessel.

Installation and setup

Installation involves mounting the pump securely, connecting it into the hydraulic steering circuit, wiring it to the compatible Raymarine control unit, and bleeding air from the hydraulic system before final autopilot checks. A clean hydraulic installation matters because trapped air, loose fittings, or incorrect hose routing can affect steering feel and autopilot response.

On boats used for coastal cruising, fishing runs, or longer passages, this pump is a practical match when the boat already has hydraulic steering and the owner wants the autopilot to steer through the existing hydraulic system.

Maintenance and care

After installation, the pump and nearby hydraulic lines should be inspected as part of normal steering system checks. Look for secure mounting, clean electrical connections, and any sign of fluid weep, hose wear, or cable damage, especially in engine room or aft locker locations where vibration and heat are common.