Operators Manual for the Three60 Precision Control System {3065, 4000, 4343, 7004} Caterpillar

Marine Engine

CT220-CT600 (S/N: RDH1-UP; HMZ1-UP)

Introduction

This document is intended to be used as an Operator Manual for the Three60 Precision Control System.

The Three60 Precision Control System supports the following items.

• Bow Thruster

• Stern Thruster (If Equipped)

• Two Caterpillar Electronically Control Engines

• Two QuickShift transmissions with power train controls (required)

Illustration 1	g03207782
Precision Control System Configuration (1) Optional thruster control panels (2) Joystick (3) Control head (4) Hydraulic thruster system (5) Power train control system

The Three60 Precision Control System provides two modes of operation:

• Leverhead Mode: Leverhead mode is the default mode of the joystick control, such as at power up. While in Leverhead Mode, all joysticks are inactive. The operator can use the optional thruster control panels (if equipped) to command the thrusters and use the control heads to command the conventional power trains.

• Joystick Mode: The operator uses the joystick to control conventional power trains and the thrusters, allowing the boat to be precisely controlled using a simple interface.

Note: As the thruster hydraulic pumps are powered by the engines, the thrusters can be used immediately once the system is placed in Joystick Mode.

Engine Start

1. At the selected control head, place the levers in the neutral position.

2. Place the ignition switch for the desired engine in the ON position as required to activate the power train control.

3. Press (about one second) and release the “Station Select” button on the control head.

   Note: The red Station Select LED for the desired engine must illuminate.

4. Verify that the red Station Select LEDs next to the Station Select buttons are illuminated The station is now is in command.

5. Verify that the yellow LEDs are illuminated. This indicates that the transmissions are in neutral.

6. Start the engine with the ignition switch.

7. Warm the engine using Direction Disabling, as required.

Engine Warmup While Using Direction Disable Mode

Note: The direction disable feature can be used any time that engine speed above idle is required while keeping the transmission in neutral. The engine speed can be varied from minimum to maximum.

1. Press and hold the “Station Select” button while moving the levers in either the forward or reverse direction.

2. Set the desired engine speed by positioning the levers.

3. When the engine us warm, return the levers to the “neutral” position.

Engine Shutdown

1. At the selected control head, place the lever in the NEUTRAL position.

2. Turn the ignition switch OFF.

Emergency Manual Mechanical Control

In the even of electrical or power train control failure, refer to the Troubleshooting Guide for information about failure codes, verify whether the vessels transmissions have a manual gear select capability (come-home feature) in addition to the electronic control.

When the power train control is not functioning, the engine can be started by placing a jumper between the neutral start interlock pins 9 and 10 in the cable connected to the power train control connector J5. This jumper should be placed at the engine control if practical. Refer to the engine schematics for more information.

Joystick Mode Operation

In Joystick Mode, the power trains and thrusters are controlled from a single joystick, allowing precision positioning of the boat. The Three60 Precision Control System applied proportional thrust in all directions in response to joystick movement.

Illustration 2	g03209096
Joystick thrust capabilities

Rotation is achieved by twisting the joystick handle. This allows precise positioning of the vessel.

• When the joystick is released, it automatically returns to the center position, and all thrust commands cease.

• Moving the joystick, including rotating the handle, engages the appropriate proportional solenoid valves to provide thrust in the selected direction using both the thrusters and conventional drives.

Illustration 3	g03209200
Joystick user interface

• Joystick Handle: Provides for the application of thrust and direction control.

• Station Select button: Activates/deactivates the joystick station and provides other joystick interface functionality.

• LEDs: These LEDs provide system status.

Note: If you cannot take command of a station or the system does not respond to your commands, check the LEDs to see if an error has occurred.

• Light Sensor: This senses the ambient light level to automatically adjust the brightness of the LEDs.

Entering Joystick Mode

To take control of the vessel at a joystick location, perform the following procedure.

Note: The operator is prevented from entering joystick mode when the joystick lockout feature is active.

1. Move the levers at the active control head to NEUTRAL and ensure that the neutral LEDs are on.

2. Ensure that the inactive joystick station is centered.

3. Press (about one second) and hold the joystick Station Select button until the joystick stations LEDs flash, then release. Successful Joystick Mode activation is indicated when the joystick station LEDs turn on and the engine speeds smoothly and ramp up to the configured setting.

The selected joystick station is now the active station. The vessel can now be controlled by moving the joystick in the desired direction or rotating the handle.

Note: Certain fault conditions prevent entry into Joystick Mode. Refer to the Troubleshooting Guide for more information on fault codes.

Exiting Joystick Mode

To exit Joystick Mode, so that the vessel can be controlled by the thruster control panels and the control heads, do one of the following:

• With the joystick centered, press and release the Station Select button at a control head to transfer control and select it as the active station.

Note: The levers at the target control head must be in the NEUTRAL position and the transmissions must also be in NEUTRAL.

• Perform an Emergency Station Transfer (always enabled) to a control head by two consecutive presses of its Station Select button.

Note: Emergency Station Transfers to a control head can always be performed regardless of joystick and lever position or the in-gear status of the transmissions.

• Press and release the active joystick's station select button. The joystick station LEDs turn off and the engine speed ramps down to the base idle speed. The joystick station is now de-selected and the system is in Leverhead Mode. No station is active at this point.

• If present, activate the optional lockout switch for the active station.

Note: Certain fault conditions also cause the system to exit Joystick Mode. Refer to the Troubleshooting Guide for more information on these conditions.

Transferring Stations

Station transfer from one joystick station to another is instantaneous and is performed as follows:

1. Ensure that the joystick is centered.

   Note: It is recommended but not required, that the active joystick be centered during joystick station transfers.

2. At the inactive joystick station, press and hold the Station Select button until the LEDs flash, then release. Successful joystick station transfer is indicated by the new joystick stations LEDs turning on and the previous stations LEDs turning off.

Joystick Station Calibration

Joystick calibration positively identifies the centered position and sets the minimum and maximum values for each axis of the joystick. A joystick station that has not been calibrated or whose actual centered position does not match the stored calibration data will be unable to take control of the vessel.

It is suggested that calibration be performed at initial installation, when the joystick is replaced, and when the joystick configuration is changed in the support tool to ensure consistent system response.

1. Place the joystick in Leverhead Mode (no joystick station is active).

2. Center the joystick.

3. Press and hold the Station Select button until the LEDs flash rapidly (about 20 seconds). Ignore any initial flashing during the first few seconds that indicate a station activation may be attempted.

   Note: When the joystick is not within the allowed center point range a flash code is displayed indicating the fault.

4. Release the Station Select button. This stores the current joystick position as the new center point.

5. Move the joystick to the following positions and hold in position for one second. The order is not important but you must move the joystick to each position.

   • Full Starboard

   • Full port

   • Full ahead

   • Full astern

   • Full clockwise rotation

   • Full counter clockwise

6. Center the joystick. Calibration is complete.

Leverhead Mode

In Leverhead Mode the control head commands the power trains and the thruster control panel controls the thruster, or thrusters if the optional stern thruster is installed.

Manual Thruster Operation

Manual thruster operation provides for control of the hydraulic thrusters via the thruster control panels and is configurable option set in the support tool during configuration. Manual thruster operation is only available when the joystick control is in Leverhead Mode. Manual thruster operation is independent of the operation of the conventional power train from the control heads.

Thruster control panels are configured as stations consisting of one or two panels. For vessels configured with bow and stern thruster panels, each thruster control station consists of one bow and one stern thruster panel. These panels are activated and deactivated as a pair such that a station bow and stern thruster control panels are active all the same time.

Illustration 4	g03210056
Thruster control panel layout

For single thruster vessels, or dual thruster vessels configured for bow-only panels, each thruster control stations consists of one bow thruster panel. Only on thruster control panel is active at one time in these configurations.

Note: The thruster control panels cannot be activated while the system is in Joystick Mode.

To take control of the thrusters at a thruster control station, press and hold both OFF buttons at one of the stations panels for about one second. The control station thruster LED will illuminate.

To disable the thruster control station press and release one of the OFF buttons at one of the thruster control panels of the active manual station.

Thrust is applied as directed by the lever.

Illustration 5	g03212136
Thruster lever operation

• Center is Neutral. The thruster control panel lever has a detent at the neutral position, center, that provides an obvious indication of neutral. When the lever is released, the lever automatically returns to the center position and no thrust is commanded.

• Moving the lever to the right or left engages the appropriate proportional solenoid valve to provide thrust to move the bow or stern in that direction.

Control Head Operation

Two levers, a Station Select button, and a Mode Select switch on the control head enable the operator to control the system and the installed options. Note that the control head body is the same for both the dual lever control head and the Palm Beach Style control assembly.The difference between the two configurations is that the levers are installed remotely from the control head body in the Palm Beach Style control assembly.

Illustration 6	g03212657
Operator controls on the control head

Illustration 7	g03212785
Lever range of operation

Each lever controls gear selection and throttle for one power train. Pressing the Station Select button transfers control to that control head. The red Station Select LED is lit when the control head is active. When the Station Select LED is flashing on or off, the control head is not active.

The Mode Select switch on the control head selects Classic, Classic Sync, Precision, Precision Sync, and troll mode. The yellow LEDs provide transmission status as follows:

• Constantly lit when the transmission is in NEUTRAL.

• Flashes when the power train control is in the Direction Disable mode during engine warm-up Refer to “Engine Warm-up While Using Direction Disable Mode”.

Analog Lever Calibration

Both the port and starboard levers can be calibrated at the same time.

1. Shut down the engines if the engines are not already shut down, but leave the key in the ON position to provide power to the power train control.

2. Press and hold the Station Select button for at least 20 seconds to enter “Analog Lever Calibration Mode”. When calibration mode is entered, all of the LEDs flash and then go out.

3. Place the levers into the full FORWARD position.

4. Press the Station Select button for approximately 6 seconds. The neutral LEDs flash very fast, indicating acceptance of the setting. The LEDs stop flashing when the Station Select button is released.

5. Move the levers to the FORWARD detent position.

6. Press the Station Select button for approximately 6 seconds. The neutral LEDs flash very fast, indicating acceptance of the setting. The LEDs stop flashing when the Station Select button is released.

7. Move the levers to the FULL REVERSE position.

8. Press the Station Select button for approximately 6 seconds. The neutral LEDs flash very fast, indicating acceptance of the setting. The LEDs stop flashing when the Station Select button is released.

9. Move the levers to neutral. The LEDs stop flashing.

Mode Select Switch

The operations that can be controlled by the “Mode Select Switch” are Classic, Classic Sync, Precision, Precision Sync, and troll.

Illustration 8	g03212878
Analog control head label

The “Mode Select Switch” can be used to select any of the following:

• Classic mode

• Throttle Synchronization while in Classic Mode

• Troll mode

• Precision mode

• Throttle Synchronization while in Precision mode

Taking Command at a Station

When the neutral interlock switch is installed, the levers must be at neutral at the selected station before the engines can be started.

Press the Station Select button for about one second to take command at that station.

Lever Function in Classic Mode

Selecting Forward (Ahead)

Move the lever toward the bow of the boat to the forward detent position in order to select the forward vessel direction. At this position, the transmission shifts into forward gear. The remaining lever travel after the forward detent position controls the engine throttle.

Selecting Reverse (Astern)

Move the lever toward the stern of the boat to the reverse detent position in order to select the reverse vessel direction. At this position, the transmission shifts into the reverse gear. The remaining lever travel after the reverse detent position controls the engine throttle.

Direction Reversal

Reversals of direction can be made at any time. An automatic timed sequence forces the throttle to idle while the vessel slows before engaging the clutch for the opposite direction. This is followed by the return of the engine throttle to the position called for by the lever.

Lever Function in Precision Mode

This mode allows the operator to achieve very low vessel speed by means of a controlled slipping clutch when the lever is placed in the forward detent or reverse detent position. Slight vessel speed variation at the detent position is normal in Precision Mode. In Precision Mode, the propeller speed increases as the lever is advanced, until the lever reaches a point where the clutch is fully engaged and then engine speed increases as lever position increases.

Setting the Vessel Speed at Detent

The vessel speed at the forward position is configured by the operator placing both the port and the starboard lever in the forward detent position, while in Precision Mode, and then pressing the Station Select button for more than two seconds. This puts the Power Train Control in the Set Detent Speed Mode, and the button can be released.

Advance the levers until the desired steady vessel speed is achieved, and press the Station Select button twice within three seconds. Return the levers to the neutral detent position. The propeller speed at the forward detent position is now updated for both the port and starboard controls and setting the speed at detent is now complete.

Level Function in Troll Mode

This mode allows the operation of the vessel at low speed by means of a controlled slipping clutch with the engine speed fixed, and the lever controlling only the propeller speed.

Setting the Vessel Speed at Detent

The vessel speed at the forward detent position is configured by the operator placing the port and starboard levers in the forward detent position, while in troll mode, and then pressing the Station Select button for at least two seconds. This puts the Control in the “Set Detent Speed Mode”, and the button can be released.

The yellow neutral LED flashes at the rate proportional to propeller speed. The operator then slowly advances the port lever until the desired vessel speed is achieved. At this time, the operator presses the Station Select button twice within three seconds. Return the levers to the neutral detent position. The propeller speed at the forward detent position is now updated for both the port and starboard controls and setting the speed at detent is now complete

Lever Function in Single Lever Sync

The Single Lever Sync feature allows multiple engine vessels to be operated from the master lever (designated during configuration) at the active control station, in the forward direction only. The designated master lever is determined at the time of configuration.

This feature is only active when the operating mode is Precision Sync or Classic Sync.

When the Single Lever Sync is active, all power train controls in the system receive their lever position commands from the designated master lever. All transmissions on the vessel are in the forward gear, all power train controls are operating in the same mode, and all engines are operating at the same throttle setting. When the Single Lever Sync feature cannot be engaged, all power train controls continue to use their own lever and commands.

The Single Lever Sync feature is canceled when any lever at the active control station is moved out of the forward direction.

Station Transfer

Station transfer is the process of transferring control of the power train functions from one control station to another. It is only applicable on vessels with more than one control station. Station transfer is accomplished by pressing the station select button on the control head. The following station transfer types are provided:

• Lever match station transfer

• Emergency transfer (double button press)

Lever Match Station Transfer

In this configuration, station transfers are only allowed when the levers on the target and active control heads are in matching positions. When the station select button on the target control head is pressed, and the levers on the target control head are mismatched from those on the active control head, the neutral LEDs on both the active control head and the target control head flash. The greater the mismatch, the slower the LED flash rate becomes.

As the levers on the target control head are moved closer to the position of the levers on the active control head, the LED flash rate increases. When the levers are matched, the target control head is automatically made active and the active control head made inactive.

The station transfer request is canceled and the neutral LEDs stop flashing when:

• A mismatch condition exits

• The levers on the active control head are moved

• 30 seconds pass without moving the levers on the target control head

Note: There is an option for emergency station transfer. Refer to “Emergency Transfer”.

Emergency Transfer

Note: When using this transfer method the directional reversal strategy will be followed, as applicable.

Emergency transfer operates in tandem with the selected normal station transfer type and allows a station transfer under emergency conditions or when the active station or station harness is damaged. When the station select button on the target station is pressed twice within 500 milliseconds, the system executes an instant transfer to the target station.

Single Lever Synchronization

Note: The master level controls either the port or the starboard engine, determined by the configuration.

Single lever synchronization operation provides the following features and characteristics:

• Logically controlled to operate only if all active engines are in Classic Sync or Precision Sync mode and in the forward detent or more position.

• Automatically turns on if all levers are moved in the forward direction and the mode select switch is in the Classic Sync or Precision Sync position.

• Automatically shuts off if any lever is moved out of the forward direction.

• Authority is not limited as long as the slave lever remains in the forward detent or more position.

• With the master engine stable, the slave engine is normally brought to match the master engines speed within five rpm in five to ten seconds. The timing depends on the differences between engine speeds prior to engaging synchronization.

• When an error occurs that disables synchronization, the engines slowly ramp to the actual lever positions speeds.

Maintenance

Maintenance Schedule

The following table lists a recommended maximum time schedule of maintenance for the Cat Three60 Thruster System. Operational issues and observations may indicate the need for more frequent service.

Setting Drag

Drag adjustment is performed at each lever. Proper adjustments are necessary to ensure that the lever remains in the intended position without operator assistance.

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Illustration 9	g03214437
Control head removal

1. Remove the control head from the cutout by loosening the set screw in the rear, until the control head cab be rotated to release the control head from the base plate front edge.
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   Illustration 10	g03214559
   Drag adjustment screws

2. Inset an 1/8 inch hex key into the opening for each lever and set the drag by accessing the drag adjustment screw.

3. Tighten the drag adjustment screws until the desired drag is obtained over the full lever travel.

   Note: 0.45 kg to 0.91 kg (1 to 2 lbs) average drag is normally desirable.

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   Illustration 11	g03214619
   Control head installation

4. Tilt the control head and engage the groove internal to the control head.

5. When engaged, tilt the control head until the control head is flat and contacts the gasket.

6. Ensure that the control head fully engages the base plate and tighten the two set screws until they securely contact the base plate and the control head is held securely in position. Tighten the screws to 1.13 N·m (10..00 lb in).

Periodic Visual Inspection

Check the component mounts for tightness or damage. Check the heat exchanger piping for leaks or damage. Check the correct operation of pressure and temperature gauges and switches. Check the unit for external oil leaks and check all external hydraulic connections for tightness.

Lubrication

All moving parts of the Cat Three60 Thruster System are lubricated by the oil as it travels through the hydraulic system. No other lubrication is required beyond the daily oil level check.

Oil Specifications

Cat 10W HYDO Advanced is recommended for filling the hydraulic reservoir. Cat 80W90 is recommended for the thruster lubrication reservoir.

Thruster Lubrication Reservoir Oil Level

Illustration 12	g03214737

Oil level in the thruster lubrication reservoir should be checked daily. The level can be seen through the thruster lubrication reservoir, and should be approximately one centimeter below the cap. Add oil as necessary and inspect for leaks.

Hydraulic Reservoir Oil Level

Illustration 13	g03214756
Hydraulic reservoir oil level

The oil level in the hydraulic reservoir is monitored by the oil level sensor, however periodic observations of the oil level using the sight gauge is advised.

Hydraulic Reservoir Oil Filter Change

This oil filter should be changed every 250 hours of operation or every year. The filter may be more frequently if the indicator shows the filter to be plugged.

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Illustration 14	g03214796

1. Remove the capscrews from the top cover using a 1/2 wrench or socket.

2. Remove the filter and spring. Install a new O-ring if necessary. Place the spring onto the seat of the new oil filter.
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   Illustration 15	g03214801

3. Install the new filter and spring into the hydraulic reservoir. Install the cover with the capscrews.

4. Tighten the capscrews to 7 N·m (62 lb in).

Hydraulic Manifold Oil Filter Replacement

This oil filter should be changed annually or more frequently if the filter indicator shows the filter to be plugged.

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Illustration 16	g03214817
Hydraulic manifold oil filter

1. Remove the oil filter bowl using a 1.25 inch wrench.

2. Remove the oil filter, using a twisting motion. Be sure the O-ring on the upper end of the filter is also removed.

3. Replace the outer O-ring and backup ring.

4. Lubricate the O-rings using system fluid and install the new oil filter using a twisting motion.

   Note: Filling the oil filter bowl before installation is not required.

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   NOTICE
   Hand tighten only. Do not torque the filter bowl or cap.

5. Install the oil filter cover hand tight only, and check for leaks.

System Oil Change

The oil should be changed every 2000 hours or when the closed system is opened for a major component replacement, such as the pump or the thruster motor. A complete oil change should include draining, flushing, and filling the coolers and hoses to the thrusters. If the motors and pumps have been drained, they must be prefilled at 50 percent at the minimum through the upper drain hole that is located on the motor and pump to avoid damage at start-up.

The recommended procedure for flushing the system is as follows:

1. Shut down the engines.

2. Replace the hydraulic manifold oil filter.
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   Illustration 17	g03214939
   Reservoir shutoff valves

3. Turn the hydraulic pump shutoff valves to the closed position.

4. Remove the hydraulic pump lines from the reservoir and place in a container to catch the oil.

5. Open the reservoir shutoff valves and drain the reservoir into an approved container.

6. Reconnect the hydraulic pump lines to the reservoir.

7. Turn the reservoir shutoff valves to the ON position. The on position is such that handles are in line with the hoses.

8. Fill the reservoir with 10W Cat HYDO Advanced
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   NOTICE
   The following steps may move the boat. Ensure that you have enough room to safely perform this procedure if the boat moves.

9. Turn on the system.

10. Using either the thruster control panel or a joystick station, run the system at minimum operating speed until the system operates properly and all air has been bled from the system. Refill the hydraulic reservoir as necessary.

Oil Change Thruster Lubrication Reservoir

The thruster lubrication reservoir should be changed annually as follows:

1. On the CT220 use a 10 millimeter wrench, on all other models use a 5 millimeter allen key to remove the oil drain plug.

2. After the oil is drained, on the CT220 install the conic plug, on all other models apply loctite 243 to the plug and install.

3. Fill the thruster lubrication reservoir with 80W90 Cat GO to the proper level.

Heat Exchanger Inspection

The heat exchanger should be inspected periodically, or whenever there is an indication of excessive temperatures or pressure restrictions. Proper venting of the system, flow rates of coolant, pressure losses across the exchanger, and cleanliness of the shell and tubes should all be considered to maintain proper heat exchanger performance.

Heat Exchanger Zinc Anode Inspection and Replacement

Corrosion in sea water circuits can result in premature deterioration of system components, leaks, and possible cooling system contamination. A lack of zinc anodes in the sea water system can cause corrosion in the sea water cooling system.

Zinc anodes are inserted in the sea water cooling system of the engine in order to help prevent the corrosive action of salt water. The reaction of the zinc to the sea water causes the zinc anodes to deteriorate. The zinc anodes deteriorate instead of engine parts for the cooling system that are more critical.

Rapid deterioration of zinc anodes may indicate the presence of uncontrolled electrical currents from improperly installed electrical attachments or improperly grounded electrical attachments.

The zinc anodes must be inspected at the proper intervals. The zinc anodes must be replaced when deterioration occurs.

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Illustration 18	g03215118
Heat exchanger zinc anodes (two per heat exchanger)

1. Use a 22 millimeter wrench and remove the zinc anode. There are two anodes per heat exchanger, one located on the top at one end, and the other on the bottom of the opposite end.

2. Tap the zinc anode lightly with a hammer.

   • If the zinc anode has not deteriorated proceed to the next step.

   • If the zinc anode has deteriorated, or if the zinc anode flakes, unscrew the old zinc anode or drill the old zinc anode from the plug. Clean the plug and proceed to the next step.

3. Apply 9S-3263 Thread Lock Compound to the shoulder of the new zinc anode. Apply the compound only to the shoulder of the zinc anode. Install the zinc anode.

Thruster Zinc Anodes

The thruster zinc anodes are attached to the propeller hub on each side of the thruster. They should be replaced whenever there is a need to pull the vessel out of the water or annually, which ever occurs first. To change the zinc anodes, perform the following steps:

1. Use a 5 millimeter hex key to unscrew the M6 recessed socket head cap screw securing the anode to the propeller hub.

   Note: A piece of wood may be needed to block the propeller to remove the screw. Locate the block of wood through the propeller blades against the thruster leg to lock the propeller from rotating. Protect the thruster tunnel and leg from paint damage when using this method.

2. Remove the anode.

3. Insert the new anode and fix the anode to the propeller hub with the M6 bolt that was earlier removed.

4. Repeat these operations for the anode on the opposite engine of the bow thruster foot.

5. To install the propeller on the foot, it is sufficient to tighten the nut and fastening screw to the hub, using the wrenches.

Thruster Coupling Flexible Element

The thruster coupling flexible element should be inspected periodically for signs deterioration. This can be observed in the openings of the adapter below the hydraulic motor on the thruster. The flexible element can be replaced by removing the motor from the adapter.

Replacement of the flexible coupling uses standard hand tools to facilitate the coupling replacement.

1. Inside the vessel gain access to the thruster leg and remove the motor from the motor flange. In some instances it may not be necessary to remove the oil lines. If it is necessary to remove the hydraulic hoses capture any oil as it leaks out.

2. Remove the screws from the hydraulic motor.
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   Illustration 19	g03217016
   Thruster leg motor and flexible coupling removal

3. Carefully lift off the hydraulic motor to allow access to the flexible coupling.
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   Illustration 20	g03217021
   Thruster flexible coupling

4. Remove the original motor spider hub as shown in the Illustration above.

5. Remove the original thruster spider hub and tapered sleeve.

   Note: Do not damage the tapered sleeve during Disassembly and Assembly.

6. Install the new tapered sleeve on the thruster leg shaft.

7. Install the new spider hubs on the leg and motor. Apply LOCTITE 243 to the threads of the bolts and torque the bolts according to the table.
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   Table 5

   Torque Specifications
   Model	Bolt Size	Torque
   CT220	NA	NA
   CT300	Motor spider bolt: M6x16 Thruster spider bolt: M10x20	Use the standard S.A.E. grade or metric fastener torque specified in S.A.E. torque standards.
   CT400	Motor spider bolt: M6x16 Thruster spider bolt: M10x20
   CT550	Motor spider bolt: M6x40 Thruster spider bolt: M12x25
   CT600	Motor spider bolt: M6x40 Thruster spider bolt: M12x25

8. Without the spider flexible installed, lower the motor into place. No metal to metal contact is allowed.

9. Place the spider flexible element in the thruster spider hub.

   Note: Allowing the motor to rest on the flexible element may cause damage to the flexible element leading to premature failure of the element.

10. Carefully lower the hydraulic motor into position so that it properly engages the spider flexible element.