Type 2 long mechanical linear actuator, 12V

The M81132 mechanical linear actuator is a high-power actuator designed for Raymarine autopilot systems. Its role is to control the rudder of your sailboat by connecting directly to the tiller quadrant or rudder stock, ensuring precise and reliable autopilot operation.

The main difference lies in power output. The Type 2 actuator delivers significantly greater thrust than the Type 1. It is therefore intended for sailboats with a larger displacement, requiring more force to maneuver the rudder.

The "long" version of the Type 2 ram, like this M81132 model, provides a longer piston stroke. This is a key advantage for installations on tiller sectors with specific geometry requiring greater travel to reach maximum rudder angles.

This linear actuator, model M81132, is designed to work with a 12V DC vessel electrical system.

The weight of the M81132 mechanical linear actuator is approximately 7.9 kg.

This actuator controls the boat's rudder. It is installed by physically connecting to the tiller quadrant or directly to the rudder stock to apply the necessary force for course changes.

According to the manufacturer's recommendations, the cylinder must be serviced every 2 years or every 1,000 hours of use, whichever comes first. This service must be performed by a technician authorized by Raymarine.

The M81132 cylinder is specifically designed for sailboats equipped with a mechanical steering system. It is not intended for hydraulic steering systems.

This linear actuator is designed to integrate with Raymarine autopilot computers. It is compatible with the latest generation actuator control units (ACU) as well as older models from the SPX series.

No, the M81132 model is exclusively designed for 12V power supply. For a 24V system, you must choose an equivalent 24V model, such as reference M81134.

This linear actuator is designed for all boats with a mechanical steering system. Although it is most commonly installed on sailboats, it is also suitable for motorboats equipped with a mechanical tiller system.

Installing this hydraulic ram requires a mechanical steering system. It connects to the tiller quadrant or rudder stock, which are components of this type of system.

The most critical aspect of the installation is the mechanical alignment. It is imperative that the angular alignment between the pushrod and the rotation plane of the rudder stock does not exceed a variation of +/- 5 degrees under any circumstances.

The cable cross-section depends on its length. For the Type 2 actuator in 12V, the manufacturer recommends the following cross-sections:

Up to 5 meters: 6 mm² (10 AWG)Up to 7 meters: 10 mm² (8 AWG)Up to 16 meters: 16 mm² (6 AWG)

Yes, to avoid electromagnetic interference (EMC), the actuator must be installed:

At least 1 metre away from VHF radio equipment and cables.
At least 2 metres away from HF radio (SSB) equipment and cables.
At least 2 metres away from the radar beam path.

It is strongly recommended to power the autopilot system, including the drive unit, from a dedicated battery separate from the engine starter battery. This prevents voltage drops during engine start from resetting the equipment.

The installation of the linear actuator is carried out in four main steps:

Consult the EMC (electromagnetic compatibility) installation guidelines.Physically mount the control unit ensuring perfect alignment.Connect the linear actuator to the autopilot computer.Perform post-installation checks to ensure proper operation.

Yes, the product is supplied with a tiller pin assembly. This includes the pin, an R-clip cotter pin, an upper washer, a locking washer, and a 1/2" Nylock nut.

For any maintenance or repair operation, it is imperative to use a service representative approved by Raymarine. This ensures the work complies with the manufacturer's standards and the use of genuine parts.

The package contains the main unit of the Type 2 Long 12V mechanical linear actuator as well as a tiller sector mounting kit (Tiller Pin Assembly), which includes the pin, washers, nut, and cotter pin required for its connection.