Garmin GHP 12 Autopilot System Installation Instructions
Contents
1. Liberty House Hounsdown Business Park Southampton Hampshire SO40 9LR UK Garmin Corporation No 68 Zhangshu 2 Road Xizhi Dist New Taipei City 221 Taiwan R O C www garmin com2. Avoid exposing the drive unit to salt water e Perform the following tasks on a regular basis o Inspect the cylinder mounting foot hardware and the tiller bolt hardware If necessary tighten any components Lubricate the cylinder rod end and the tiller bolt Use only high quality marine grease that is compatible with nitrile seals Inspecting the Motor Brushes You should inspect the motor brushes every 500 hours typically annually for wear 1 Remove the brush holder on the side of the motor 2 Inspect the brushes for wear 3 Ifnecessary purchase replacement brushes Replacing the Motor Brushes Replace the brushes with the correct replacement part while following these guidelines e Clean all of the loose carbon from the inside the motor before fitting the new brushes in the motor Ifhydraulic fluid has entered the motor correct the cause and then degrease the brush gear and commutator before running the motor If you do not degrease the motor in this situation arching will reduce the bush life Bleeding the System When bleeding the system stay clear of moving steering components and linkages at all times to avoid injury NOTICE Before bleeding the system make sure the oil and any storage containers are clean and free of contamination to avoid damaging the drive unit The hydraulic system of the drive unit was filled and tested at the factory so follow this procedure only if air has entered the
3. part of this manual may be reproduced copied transmitted disseminated downloaded or stored in any storage medium for any purpose without the express prior written consent of Garmin Garmin hereby grants permission to download a single copy of this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto 1s strictly prohibited Information in this document is subject to change without notice Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements Visit the Garmin Web site www garmin com for current updates and supplemental information concerning the use and operation of this and other Garmin products Garmin and the Garmin logo are trademarks of Garmin Ltd or its subsidiaries registered in the USA and other countries These trademarks may not be used without the express permission of Garmin Loctite 638 is a trademark of Henkel Corporation in the U S and elsewhere A GARMIN 2011 Garmin Ltd or its subsidiaries Garmin International Inc 1200 East 151 Street Olathe Kansas 66062 USA Garmin Europe Ltd
4. system or if the system has been dismantled Before you can bleed the system you must purchase the correct type of hydraulic oil page 6 Dispose of any waste oil responsibly 1 Set the reservoir tap to the ON position page 3 2 Push in the cylinder rod so that it is fully retracted 3 Loosen but do not disconnect the reservoir hoses from the cylinder Oil will emerge from the connectors when loosened properly 4 Tighten the hoses 5 Turn on the autopilot system to energize the drive unit Class B Drive Unit Installation Instructions Oo CO a DW Slowly pull out the cylinder rod until it is fully extended Observe the oil level in the reservoir If necessary fill the reservoir to the minimum line on the label Fully retract the rod The oil level will rise when the rod 1s retracted 10 Observe the oil level in the reservoir 11 If necessary fill the reservoir to the maximum line on the label 12 Repeat steps 6 11 until you can see no air rising into the reservoir and the pump takes over 13 Use the autopilot to extend and retract the rod until you can see no air rising into the reservoir You may need to manually assist the cylinder at first to purge any remaining air in the system 14 Observe the oil level in the reservoir 15 If necessary fill the reservoir to the maximum line on the label Troubleshooting Symptom Possible Causes The motor does not run e The power and c
5. will occur Location Considerations When selecting a location to mount the cylinder the pump and the reservoir consider these guidelines e The system was filled and tested at the factory so none of the hydraulic hoses should be disconnected to install the system e The components must all be installed under deck e The motor should not be installed in a location where it is exposed to excessive temperature page 6 vibration or fumes Any of these extremes can reduce the life of the motor e Avoid contact with water and excessive humidity e Motor brush holders are located on both sides of the motor and the motor should be installed so that the motor brushes are accessible for service page 3 The cylinder must be mounted securely on a surface that is able to withstand the high thrusts generated by the rudder e The cylinder must be installed within specific extension and angle limitations page 8 The cylinder rod movement must be limited by physical stops to 12 in 305 mm from fully retracted to fully extended or damage to the cylinder will occur o No part of the cylinder or rod should contact the vessel quadrant or tiller arm throughout the full range of movement The 5 angle at the extremes of the stroke page 8 must not be exceeded or damage the cylinder bearings and the rod will occur An example illustration is available in the appendix page 9 Class B Drive Unit Installation Instruction
6. 8 SAE female swivel Material Brass Type Marine Steering Hose e 1000 PSI working pressure e 5 16 I D Length 3 28 ft 1 m General System Weight Gross 30 86 Ibs 14 kg Temperature rating From 4 to 149 F from 20 to 65 C Class B Drive Unit Installation Instructions Reservoir Dimensions Pump Dimensions Measurement 5 85 in 148 7 mm 3 8 in 9 5 mm diameter 2 18 in 55 3 mm Item Measurement 3 5 in 88 9 mm 2 68 in 68 mm diameter 0 28 in 7 mm diameter 2 in 50 8 mm 3 33 in 84 6 mm 3 15 in 80 mm D00000 8 58 in 218 mm Cylinder Installation Dimensions Er AN FN SZ EN YSZ miala NZI ee m Description Pivot radius of the cylinder on the mounting foot Measurement 360 Stroke distance from fully retracted to fully extended 12 in 305 mm Distance from the center of the cylinder mount to the rudder bolt when fully retracted Distance from the center of the cylinder mount to the rudder bolt when the rudder is amidships 23 75 in 603 2 mm 29 72 in 754 9 mm Distance from the center of the cylinder mount to the rudder bolt when the rod is fully extended 35 7 in 906 8 Maximum tilt angle of the cylinder when at the extremes of the stroke Exceeding this angle will damage the drive unit 5 to either side of center Maximum adjusta
7. A GARMIN Class B Drive Unit Installation Instructions To obtain the best performance and to avoid damage to your boat install the Garmin Class B Drive Unit according to the following instructions Professional installation of the drive unit 1s highly recommended because specific knowledge of rudder operation is required to properly install the drive unit Read all installation instructions before proceeding with the installation If you experience difficulty during the installation contact Garmin Product Support About the Class B Drive Unit The Class B drive unit is a self contained hydraulic drive unit that uses a solenoid clutch to extend and retract the rod that steers the tiller Combined with the included rudder feedback sensor the Garmin Class B Drive unit will provide the steering necessary for a Garmin autopilot when installed correctly Because the drive unit is self contained you do not need to connect or disconnect any of the hydraulic hoses The system was filled and tested at the factory Registering Your Device Help us better support you by completing our online registration today e Go to http my garmin com e Keep the original sales receipt or a photocopy in a safe place Contacting Garmin Product Support Contact Garmin Product Support if you have any questions about this product Inthe USA go to www garmin com support or contact Garmin USA by phone at 913 397 8200 or 800 800 1020 Int
8. ble distance of the rudder bolt adapter from the end of the rod 0 59 in 15 mm Maximum tilt angle of the rudder bolt when at the extremes of the stroke 10 to either side of center Thickness of the rudder bolt adapter 0 98 in 24 9 mm 0000 ODO OO CF Relative distance from the center of the rod to the base of the cylinder mount when at rest 2 in 51 mm fr laaq Ly I a pele D Nein Ilani Inatallatin fe lO Init Inerollorinn D Drive unit instaration J L 4 LN aTrlirrlanc INSTTUCTIONS a Cylinder Mounting Example This example shows a typical cylinder installation on a 8 4 in 214 mm quadrant with total rudder angle of 70 2 x 35 7 T O Item Description Measurement Distance from the center of the cylinder base to the tiller bolt when the rudder is amidships 29 66 in 753 3 mm Degree of travel from amidships to the installed cylinder stops 35 Relative distance from the center of the cylinder base to the rudder post 8 28 in 210 4 mm Distance from the center of the tiller bolt to the rudder post 10 12 in 257 mm Distance from the center of the cylinder base to the rudder post when the rudder is amidships 29 67 in 753 7 mm Class B Drive Unit Installation Instructions 2011 Garmin Ltd or its subsidiaries All rights reserved Except as expressly provided herein no
9. bolt and fittings Suitable for a quadrant or tiller arm thickness of 79 in 20 mm to 98 in 25 mm Rudder feedback kit Cylinder fasteners e M68 bolts washers and nuts e Suitable for mounting the cylinder on a surface between 47 in 12 mm and 95 in 24 mm thick Hydraulic oil Pump Pump fasteners M8 bolts washers and nuts NOTE The fasteners listed above are used to secure the components to the packaging Do not discard the hardware when unpacking the drive unit Hardware Needed e Tiller arm if needed page 2 e End stops page 2 Screws to mount the reservoir page 3 Tools Needed Safety glasses Drill and drill bits Wrenches Torque wrench Loctite 638 or equivalent recommended page 4 Tiller Arm and End Stops You can connect the drive unit to either an existing quadrant or to a tiller arm not included If you do not have a quadrant or can not install the drive unit at your quadrant location choose a tiller arm that fits the diameter of your rudder post and is the correct length for the installation location The supplied tiller bolt is suitable for a quadrant or tiller arm thickness of 79 in 20 mm to 98 in 25 mm The cylinder must not act as a drive limiter Physical end stops not included must be in place to limit the cylinder rod travel to 12 in 305 mm from fully retracted to fully extended or damage to the cylinder
10. e 3 Place the tiller bolt into the quadrant or tiller arm and secure it with the tiller bolt M20 washer and the M20 nut 7 Fasten the rudder feedback sensor to the sensor mounting clamp with the 4 Tighten the M20 nut to 50 15 ft lbf 68 Nm included M5 A4 washer and locking pin 5 Place the rod on the tiller bolt 8 Fasten the rudder feedback sensor to the tiller bolt with the included M5 6 Fasten the rod to the tiller bolt with the other M20 washer and the eS ed p a pm Connecting the Drive Unit to the Garmin Autopilot Installing the Rudder Feedback Sensor NOTICE NOTICE Do not cut the cables connected to the drive unit Cutting the drive unit You must carefully measure the operating distance of the drive unit cylinder cables voids your warranty rod and install the feedback sensor mounting clamp at the proper location or Consult the installation instructions provided with your Garmin autopilot to you will damage the feedback sensor install the autopilot components and to connect the drive unit to the correct To use the drive unit with a Garmin autopilot you must install the rudder componens feedback sensor after you have installed the drive unit 1 Place the sensor mounting clamp on the cylinder 4 Class B Drive Unit Installation Instructions Maintenance and Service General Maintenance e To maximize the life of your drive unit take the following precautions o Keep the cylinder rod free from damage o
11. e mounting surface 2 Verify the marked locations The marked locations should be 3 in 76 2 mm apart NOTE The diagram 1s not to scale 3 Drill 35 in 8 8 mm holes through the mounting surface 4 Secure the mounting foot to the mounting surface using the supplied M8 bolts washers and nuts 5 Tighten the bolts to 12 5 ft lbf 17 Nm Installing the Tiller Bolt The supplied tiller bolt is suitable for a quadrant or tiller arm thickness of 79 in 20 mm to 98 in 25 mm 1 Drill a 20 1 mm hole in the quadrant or tiller arm not included for the tiller bolt 2 Fasten the sensor mounting clamp to the cylinder using the included 45 mm M6 screw and M6 nut Do not tighten the nut at this time 3 Adjust the position of the sensor mounting clamp so that the distance between the mounting bracket and the center of the tiller bolt is between 19 69 in 500 mm and 32 28 in 820 mm during the full range of the cylinder movement If the distance ever compresses below 19 69 in 500 mm or extends beyond 32 28 in 820 mm it will damage the sensor 4 Tighten the M6 nut to 3 7 ft lbf 5 Nm 2 It is recommended to apply Loctite 638 or equivalent to the tiller bolt 5 Install the sensor mounting stud in the sensor mounting clamp where it passes through the quadrant or tiller arm 6 Fit the rudder feedback sensor on the sensor mounting clamp and th
12. he UK contact Garmin Europe Ltd by phone at 0808 2380000 In Europe go to www garmin com support and click Contact Support for in country support March 2011 190 01289 06 Rev B Important Safety Information You are responsible for the safe and prudent operation of your vessel The Autopilot is a tool that will enhance your capability to operate your boat It does not relieve you from the responsibility of safely operating your boat Avoid navigational hazards and never leave the helm unattended See the Important Safety and Product Information guide in the autopilot product box for product warnings and other important information Failure to install and maintain this equipment in accordance with these instructions could result in damage or injury When in use beware of hot motor and solenoid components as well as the risk of entrapment from moving parts Always wear safety goggles ear protection and a dust mask when drilling cutting or sanding NOTICE This equipment should be installed by a qualified marine installer This equipment is only for use with Garmin autopilots The system was filled and tested at the factory so you should not disconnect the hydraulic hoses to install the system When drilling or cutting always check the opposite side of the surface Be aware of fuel tanks electrical cables and hydraulic hoses Printed in the UK Package Contents Reservoir Cylinder ram Tiller
13. lutch cable is not connected to the ECU e The rudder feedback cable is not connected to the ECU e The motor brushes need to be replaced page 5 The motor runs but the cylinder rod does not move or moves erratically There is air in the cylinder may be accompanied by external oil loss Bleed the system page 5 The pump makes excessive noise e There is air in the cylinder may be accompanied by external oil loss Bleed the system page 5 e The motor may be damaged Appendix Specifications Component Specification Value Motor Nominal output power 100 W Maximum continuous current 12A Rotation Reversing Protection IP55 Ignition protection BS EN 28846 1993 EMC BS EN 60945 2002 Clutch Coil voltage nominal 12 Vdc Coil power continuous 12 W Protection IP65 Cylinder Volume Nominal 0 44 gal 538 cc Area 0 27 in 176 6 mm Stroke 12 in 305 mm Adjustment 0 7 in 18 mm Maximum thrust intermittent 2 469 Ibs 1120 kg Hard over time nominal 13 sec Relief valve setting 62 bar Cylinder body material Aluminium BS 1490 Cylinder rod material Stainless Steel Chrome Plated Seals Nitrile amp PTFE Body Protection SP270 Oil Recommended Q8 Dynobear 10 Equivalent Mineral based hydraulic Minimum ISO VG10 Maximum ISO VG40 Ports Pump G1 4 BSP parallel BS2779 73 Cylinder G1 4 BSP parallel BS2779 73 Hoses Threads 5 8 1
14. s Installing the Reservoir NOTICE The reservoir is fitted with a special cap that contains a breather hole The breather hole is sealed for transit and must be opened before operation The reservoir contains the hydraulic fluid necessary for operation of the drive unit and it must be installed and prepared before installing any other components Do not attempt to move the cylinder rod until instructed You must first select a mounting location before you can install the reservoir page 2 1 Select fastening screws suitable for mounting the reservoir on a bulkhead of your boat 2 Choose a location on a bulkhead as far above the pump and cylinder as possible and mark the pilot holes O If needed the device and mounting hole dimensions are provided in the appendix page 7 3 Drill the pilot holes using a drill bit appropriate for the chosen screws 4 Secure the reservoir to the bulkhead with the screws 5 Remove the transit screw and seal from the cap Save the screw and seal for future use 6 Using the included hydraulic oil fill the reservoir to the maximum level as indicated on the label 7 Turn the valve from the OFF position to the ON position 8 Extend the cylinder rod halfway and check the oil level 9 Ifnecessary add oil Class B Drive Unit Installation Instructions Installing the Pump NOTICE Do not disconnect the hydraulic hoses from the pump Bolts washers and nuts are provided to ins
15. tall the pump You must first select a mounting location before you can install the pump page 2 1 Make sure that the brush holders are accessible for service after mounting the pump 2 Mark the pilot hole locations If needed the device and pilot hole dimensions are provided in the appendix page 7 3 Drill the mounting holes using a drill bit appropriate for the mounting surface and the mounting hardware 4 Secure the pump to the mounting surface with the included hardware Installing the Cylinder NOTICE The cylinder rod movement must be limited by physical end stops to 12 in 305 mm from fully retracted to fully extended Failure to install steering end stops will damage the drive unit Do not exceed the 5 angle at the extremes of the stroke page 8 Exceeding the 5 angle at the extremes of the stroke will damage the cylinder bearings and the rod You must first select a mounting location before you can install the cylinder page 2 1 Install the mounting foot page 3 2 Install the tiller bolt page 4 Installing the Mounting Foot The mounting foot is at the base of the cylinder Hardware is supplied to fasten the mounting foot to the mounting surface The supplied M8 bolts washers and nuts are suitable for mounting the cylinder on a surface between 47 in 12 mm and 95 in 24 mm thick 1 With the mounting foot in the chosen location mark the locations of the four mounting holes on th
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