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Summary of Contents for Raymarine Hydraulic Pump
- Page 1 Distributed by Any reference to Raytheon or RTN in this manual should be interpreted as Raymarine. The names Raytheon and RTN are owned by the Raytheon Company.
- Page 2 Hydraulic Pump Installation Guide Drives covered: M81120 Type 1 Hydraulic Pump 12 V M81119 Type 1 Hydraulic Pump 24 V M81121 Type 2 Hydraulic Pump 12 V M81123 Type 2 Hydraulic Pump 24 V M81122 Type 3 Hydraulic Pump 12 V...
- Page 3 EMC conformance All Raymarine equipment and accessories are designed to the best industry standards for use in the recreational marine environment. The design and manufacture of Raymarine equipment and...
- Page 4 (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.
- Page 5 Other information Pump dimensions Type 1 (12 V) and Type 2 pumps Figure 2: Type 1 (12 V) and Type 2 pump dimensions Hydraulic Pump - Installation Guide Type 1 (T1) Type 2 (T2) M81120 (12 V) M81121 (12 V)
- Page 6 Hydraulic Pump - Installation Guide Type 3 pump Figure 3: Type 3 pump dimensions Installation instructions Parts required To install this drive you will need: • Parts supplied: • • • Additional parts: • • • Note: Make sure you have obtained these additional parts before you start installation.
- Page 7 Connect to the course computer. Complete the post-installation checks. 1. EMC installation guidelines All Raymarine equipment and accessories are designed to the best industry standards for use in the recreational marine environment. Their design and manufacture conforms to the appropriate...
- Page 8 • Raymarine specified cables are used. Cutting and rejoining these cables can compromise EMC performance and must be avoided unless doing so is detailed in the installation manual.
- Page 9 Connections to other equipment If your Raymarine equipment is to be connected to other equipment using a cable not supplied by Raymarine, a suppression ferrite MUST always be attached to the cable near to the Raymarine unit. 2. Pump mounting Mount the hydraulic pump: •...
- Page 10 Hydraulic Pump - Installation Guide • Try to keep hydraulic fluid loss to a minimum when installing the pump. This will reduce the time and effort required to bleed the system of trapped air after installation: • • WARNING: Before disconnecting any pipes on pressurized systems, you MUST release the pressure at the reservoir by following the manufacturer’s instructions.
- Page 11 Connect the autopilot pump to the steering system as shown in Figure 5. Reservoir pipe Autopilot pump Figure 5: Autopilot pump location for two line systems Hydraulic Pump - Installation Guide Helm pump Check valve (if required) Ram pipes Steering ram...
- Page 12 Hydraulic Pump - Installation Guide Two line pressurized systems Two line pressurized systems have an external pressurized reservoir. This reduces the possibility of introducing air into the system and reduces any steering ‘sponginess’ caused by pipe expansion. Connect the autopilot pump to the steering system as shown in Figure 6.
- Page 13 Connect the autopilot pump to the steering system as shown in Figure 7. Figure 7: Autopilot pump location for three line systems Helm pump Check valve Reservoir pipe Autopilot pump Hydraulic Pump - Installation Guide Ram pipes Steering ram...
- Page 14 Make sure the power supply is switched off before you make any electrical connections. The hydraulic pump has electrical connections for its motor: a red and a black cable. Note: To meet current EMC legislation, you must NOT untwist the pump cables, and you must NOT remove the suppression ferrite.
- Page 15 M81167) across these pipes (as shown in Figure 9). Connect the bypass valve to the CLUTCH terminals on the course • computer using at least 1.5 mm Hydraulic Pump - Installation Guide Cable gauge (AWG) up to 3 m (10 ft)
- Page 16 Hydraulic Pump - Installation Guide Note: Follow the manufacturer’s instructions for mounting the hydraulic ram and reservoir. Figure 9: Connecting to a secondary steering ram 5. Post-installation check WARNING: Keep clear of moving steering systems at all times. Protect moving parts from access during normal use.
- Page 17 Bleeding the system Bleeding the hydraulic system correctly is one of the most important steps when installing the autopilot hydraulic pump. If there is any air in the system the steering will feel spongy, particularly when you turn the wheel to hardover.
- Page 18 Authorized Service Representatives. If you encounter any difficulties with this product, please contact either your national distributor, or your service representative, or the Raymarine Technical Services Call Center. Refer to the back cover or the Worldwide Distributor List for contact details.
- Page 19 Fax +44 (0)23 9269 4642 www.raymarine.com Raymarine Technical Services Call Center UK: +44 (0)23 9271 4713 or +44 (0)23 9269 3611 ext. 1083 Hydraulic Pump - Installation Guide Raymarine Inc 22 Cotton Road, Suite 280 Nashua NH 03063-4219, USA Telephone +1 603 881 5200 Fax +1 603 864 4756 www.raymarine.com...
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