Gear kit

This N021 gear kit is designed for Raymarine linear and rotary actuators (Type 1 and Type 2).

You should consider replacing the gears if you observe one or more of the following signs on your autopilot:

Excessive or unusual mechanical noise (grinding, clacking) during operation.Significant play in the transmission, resulting in a lack of responsiveness at the helm.The autopilot motor runs but the ram does not move or moves jerkily.

Installing this kit requires a certain level of technical skill. It involves partially dismantling the autopilot's housing to access the internal mechanism. A person comfortable with small mechanical tasks can perform the operation.

No, kit N021 is not compatible with any ST1000 or ST2000 models. It is designed for mechanical linear and rotary actuators of Type 1 and Type 2. The gear kit for ST1000 and ST2000 autopilots is reference Q054.

The N021 kit is a complete solution for overhauling the transmission. It includes all the pinions and gears required to replace the internal mechanism of your Raymarine linear and rotary actuators.

Yes, it is essential to lubricate the new gears with high-quality marine grease during installation. This ensures smooth operation, reduces wear, and protects parts from corrosion. The grease is not included in the kit.

Yes, absolutely. The N021 gear kit is an official spare part manufactured by Raymarine. Using an original part ensures a perfect fit, compliance with tolerances, and restoration of your autopilot's original performance.

No, this kit is a Raymarine-specific part designed for Raymarine linear and rotary actuators (Type 1 and Type 2). The gear dimensions and design will not match actuators from other brands.

Yes, it is strongly recommended to replace all the gears supplied in the kit. Gears wear together. Replacing only one gear could lead to premature wear of the new gear and poor transmission performance.

To confirm compatibility, you must check the exact model of your autopilot. The model name, such as Type 1 or Type 2 cylinders, is usually printed directly on the device's housing.

Yes. Worn gears create play in the drive, reducing the autopilot’s responsiveness and accuracy. Installing this new kit eliminates this play and restores the original steering precision and responsiveness of your unit.

Generally, basic tools are sufficient for this operation. Have a set of precision screwdrivers (Phillips and flathead) and potentially small pliers on hand. No proprietary Raymarine tools are typically required for this repair.

The N021 kit is not compatible with ST1000+ and ST2000+ models; it is designed for Raymarine linear actuators. The ST1000+ and ST2000+ autopilots use a different gear kit (reference Q054).

The main advantage is economic and sustainable. This kit significantly extends the lifespan of your autopilot at a fraction of the cost of replacing the entire drive unit.

Yes, the most important precaution is to ensure the autopilot is completely disconnected from any power source before starting to disassemble it. This prevents any risk of short-circuit or accidental activation.

No, this kit is specifically designed for the internal mechanisms of tiller pilots (actuators). It is absolutely not compatible with wheel pilot systems, which use power units and transmissions that are entirely different.

No, as a spare part, this kit contains only the gears. It does not come with a paper installation manual. The replacement procedure is detailed in the official service manuals for the relevant autopilots.

Yes, in most cases. If your autopilot’s noise is a mechanical squeaking or clacking from the drive, replacing the worn gears with this new kit should effectively eliminate the noise.

The total weight of the N021 gear kit is approximately 0.2 kg (200 grams).

No, this kit is only for ST1000+ and ST2000+ models. Evolution series autopilots, such as the EV-100, use different internal components and this gear kit is not compatible with them.