GARMIN GT56UHD-TR Force Kraken Trolling Motor User Guide

June 16, 2024
Garmin

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FORCE® KRAKEN TROLLING MOTOR
SERVO REPLACEMENT GUIDE

Tools, Supplies, and Equipment Needed for Repair

When performing repair or replacement procedures, you must have the following tools and supplies.

  • Suitable workbench or table
    ◦ Must be at least 8 ft. long for working on the 48 in. models
    ◦ Must be at least 10 ft. long for working on the 63 in. models
    ◦ Must be at least 11 ft. long for working on the 63 in. models
    ◦ Must be at least 15 ft. long for working on the 90 in. models

  • 2, and #3 Phillips screwdrivers

  • 2.5 mm, 3 mm, and 4 mm hex bits or wrenches

  • Synthetic or marine grade general-purpose grease

  • 2 zip ties 1/8 – 3/16 in. (3.2 – 4.8 mm) wide and 3 in. (76 mm) long

Removing the Existing Steering Servo Housing

  1. Remove the mount shrouds (Removing the Mount Shrouds, page 2).
  2. Open the shaft cap (Opening the Shaft Cap, page 2).
  3. Disconnect the cables in the shaft cap (Disconnecting the Cables in the Shaft Cap, page 3).
  4. Remove the shaft cap (Removing the Shaft Cap, page 5).
  5. Remove the depth-adjustment assembly (Removing the Depth-Adjustment Assembly, page 6).
  6. Remove the shaft from the steering servo housing (Removing the Shaft from the Steering Servo Housing, page 6).
  7. Remove the shaft mini-tumbler and biasing bushing (Removing the Shaft Mini-Tumbler and Biasing Bushing, page 7).
  8. Remove the servo landing pad (Removing the Servo Landing Pad, page 8).
  9. Remove the pivot pin (Removing the Pivot Pin, page 9).

Removing the Mount Shrouds

  1. Using a 4 mm hex bit or wrench, remove the screws that secure the mount shroud to the mount base.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Removing the Mount
Shrouds

  2. Remove the mount shroud.

  3. Repeat these steps to remove the mount shroud on the opposite side.

Opening the Shaft Cap

WARNING
Before you open the shaft cap, you must disconnect the motor from the power source. Failure to disconnect the power source can lead to electrical shock or damage to the motor.

  1. Using a #2 Phillips screwdriver, remove the four screws that secure the lid of the shaft cap.
    You should place these screws in a safe place, because you must use them to close the shaft cap.

  2. Lift up to remove the lid of the shaft cap.

Disconnecting the Cables in the Shaft Cap

  1. Unscrew and disconnect the USB connector (1) .
    Ensure the o-ring remains in place inside the connector.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Cables in the Shaft
Cap

  2. Release the latch (2) and pull the connectors apart to disconnect the data cable.
    NOTE: Pull only on the connector body. Do not pull on the wire itself.

  3. Unscrew and disconnect the transducer cable (3) (if present).

  4. Carefully cut off the zip ties (4).

  5. Slide down the protective coverings (4) on the power cables.

  6. Using a 2.5 mm allen wrench, loosen the four set screws on the two power cables.

  7. Disconnect the power cables.

  8. Remove the protective coverings from the power cables.

Removing the LiveScope™ Transducer Cable from the Shaft Cap
NOTE: Not all models have a LiveScope transducer routed through the trolling motor shaft.

  1. If it is present, disconnect the transducer cable from the chartplotter.

  2. Remove the tape securing the transducer cable to the coiled power cable.

  3. Straighten the transducer cable so you can easily pull it through the shaft cap.

  4. Push from the inside out to remove the square grommet (1) that holds the transducer cable (2) in the shaft cap.

  5. Remove the grommet from the transducer cable.
    The grommet is split on one side to make it easy to remove from the cable.
    You should keep the grommet in a safe place, because you must reinstall it later.

  6. Feed the transducer cable through the shaft cap from the outside in until it is no longer routed through the square hole.

Removing the Shaft Cap

  1. Take a picture or count and write down the number of coils in the coil cable that wraps around the shaft.
    When re-assembling the shaft and shaft cap, you must use the same number of coils around the shaft.

  2. Using a #3 Phillips screwdriver, remove the 1 /4-20 bolts and nuts that secure the shaft cap to the shaft.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Removing the Shaft
CapYou should keep these bolts and nuts in a safe place, because you must use them when reinstalling the shaft cap.

  3. Lift up the shaft cap to disconnect it from the shaft.

  4. Pull the cables completely through the shaft cap, taking care to avoid damaging the cable connectors when you pull them through.

Removing the Depth-Adjustment Assembly
Before you remove the depth-adjustment assembly, you should support the motor or ensure the motor is in the stowed position.
CAUTION
Loosening the depth-adjustment assembly with the motor in the deployed position allows the motor and shaft to drop free of the steering servo. Support the motor while loosening the depth-adjustment assembly or keep the motor in the stowed position when  removing the depth-adjustment assembly to prevent damage to or loss of the motor and to prevent personal injury.

Turn the depth-adjustment assembly counter-clockwise to loosen it (1) , and slide both pieces off of the shaft (2).

Removing the Shaft from the Steering Servo Housing
CAUTION
This procedure is best performed with two people to prevent injury or damage.

  1. Rotate the steering servo and shaft to the stowed position.
    NOTE: You must ensure the coil cable is not pinched under the steering servo when stowing.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Steering Servo
Housing

  2. Slide the shaft and motor out of the steering servo, taking care not to damage the skeg and transducer or snag the cables or connectors (2) as you pull it through.

Removing the Shaft Mini-Tumbler and Biasing Bushing
Removing the mini-tumbler and biasing bushing from the steering servo housing makes it easier to install the shaft later.

  1. Using a #2 Phillips bit or screwdriver, remove the screw (1) from the biasing bushing (2).
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Biasing
Bushing

  2. Pull out the biasing bushing.

  3. Slide the shaft mini-tumbler (3) out of the steering servo.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Biasing Bushing
2

Removing the Servo Landing Pad

  1. Using a 3 mm hex bit or wrench, remove the two screws (1) that secure the servo landing pad (2) to the mount base.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Removing the Servo Landing
Pad

  2. Remove the landing pad.

Disconnecting the Steering Servo Cables
Unscrew the locking collars and disconnect the cables from the control panel and wiring harness.

GARMIN GT56UHD-TR Force Kraken Trolling Motor - Steering Servo
Cables

Removing the Pivot Pin
While pressing down on the latch pusher (1), push the pivot pin (2) out of one side and remove it from the mount base.

GARMIN GT56UHD-TR Force Kraken Trolling Motor - Removing the Pivot
Pin

Removing the Steering Servo
With the pivot pin removed, lift the steering servo out of the mount.

Installing the Replacement Steering Servo

  1. Remove the bushings from the previous steering servo housing and install them in the new steering servo housing (Installing the Bushings in the Steering Servo Housing, page 10).
  2. Reinstall the pivot pin (Reinstalling the Pivot Pin, page 11).
  3. Connect the steering servo cables (Connecting the Steering Servo Cables, page 11).
  4. Install the servo landing pad (Installing the Servo Landing Pad, page 12).
  5. Install the shaft in the steering servo housing (Installing the Shaft in the Steering Servo Housing, page 12).
  6. Install the shaft mini-tumbler and biasing bushing (Installing the Shaft Mini-Tumbler and Biasing Bushing, page 13).
  7. Install the depth-adjustment collar (Reinstalling the Depth-Adjustment Assembly, page 14).
  8. Install the shaft cap (Installing the Shaft Cap, page 14).
  9. Connect the cables in the shaft cap (Connecting the Cables in the Shaft Cap, page 15).
  10. Close the shaft cap (Closing the Shaft Cap, page 16).
  11. Install the mount shrouds (Installing the Mount Shrouds, page 16).

Installing the Bushings in the Steering Servo Housing

  1. Remove the two bushings from the existing steering servo housing.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Installing the
Bushings

  2. Clean all dirt and debris off of the bushings.

  3. Apply synthetic or marine grade general-purpose grease to the outside of the bushings (2).
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Apply
synthetic

  4. Insert the bushings into the new steering servo housing.

Reinstalling the Pivot Pin
Before you reinstall the pivot pin, you should ensure the steering servo bushings are installed in the replacement steering servo.

  1. Place the replacement steering servo in the mount base.

  2. Press down the latch pusher (1).
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Reinstalling the Pivot
Pin

  3. Push the pivot pin (2) through the mount base and the steering servo.

Connecting the Steering Servo Cables

  1. Connect the cables (1) to the coil cable and the control panel.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Connecting the Steering
Servo Cables

  2. Tighten the locking collars to secure the cables.

Installing the Servo Landing Pad

  1. Install the servo landing pad , and ensure the cables fit flat in the groove under the servo landing pad and are not twisted or compressed.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Installing the Servo Landing
Pad NOTICE
    Pinching the cables may result in damage to the cables.
    2 Secure the servo landing pad to the mount base using the screws (2) you removed earlier.

Installing the Shaft in the Steering Servo Housing
CAUTION
This procedure is best performed with two people to prevent injury or damage.
Insert the shaft into the bottom of the steering servo housing, and push it through, taking care not to damage the skeg and transducer or snag the cables or connectors as you push it through..

GARMIN GT56UHD-TR Force Kraken Trolling Motor - Installing the Shaft in the
Steering Servo Housing

Installing the Shaft Mini-Tumbler and Biasing Bushing

  1. Align the ridge on the mini-tumbler (1) with the notch on the shaft (2), and snap it onto the shaft.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - ridge

  2. Slide the mini-tumbler into position in the steering servo.

  3. Reinstall the biasing bushing (3) around the shaft.

  4. Secure the biasing bushing with the screw (4) you removed earlier.

Reinstalling the Depth-Adjustment Assembly
Before you install the depth-adjustment assembly, you should support the motor or ensure the motor is in the stowed position.
CAUTION
Placing the motor in the deployed position without installing the depth- adjustment assembly allows the motor and shaft to drop free of the steering servo. Support the motor while reinstalling the depth-adjustment assembly or keep the motor in the stowed  position when reinstalling the depth-adjustment assembly to prevent damage to or loss of the motor and to prevent personal injury.

  1. Slide both pieces of the depth-adjustment assembly onto the shaft (1) .

  2. Turn the depth-adjustment assembly clockwise to tighten it (2).

Installing the Shaft Cap

  1. Using the coil count you recorded when you removed the shaft cap, wrap the coil cable around the shaft the appropriate number of times.
  2. Pull the cables from the shaft completely through the shaft cap.
  3. Place the shaft cap on the shaft, aligning the coil cable extending from the shaft cap with the groove on the shaft.
  4. Using a #3 Phillips bit or screwdriver, secure the shaft cap to the shaft with the 1/4-20 bolts (1) and nuts (2) you removed earlier.

GARMIN GT56UHD-TR Force Kraken Trolling Motor - Installing the Shaft
Cap

Installing the Transducer Cable in the Shaft Cap

  1. If previously removed, feed the transducer cable (1) completely through the square hole in the shaft cap.

  2. Install the grommet (2) on the transducer cable.
    The grommet is split on one side to make it easy to install on the cable.

  3. Push from the outside to secure the square grommet in the shaft cap.

  4. Route the transducer cable alongside the coil cable, using electrical tape to hold the cables together.

  5. Route the transducer cable to the chartplotter and connect it.

Connecting the Cables in the Shaft Cap

  1. Place the protective coverings on the power cables (1).

  2. Reconnect the power cables, and use a 2.5 mm hex bit or wrench to tighten the set screws (2).
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Connecting the Cables in
the Shaft Cap

  3. Slide the protective coverings over the power cable connections.

  4. Secure the power cables to the shaft cap using zip ties at the same locations you removed them from when disconnecting the power wires (3).

  5. Reconnect the USB (4) (and transducer (5) cable (if present), and tighten the collars.

  6. Align both sections of the data cable connector (6) and press them together to connect them.

Closing the Shaft Cap

  1. Place the lid on the shaft cap.
    NOTICE
    Ensure the cables are routed away from pinch points before securing the shaft cap lid to avoid damaging the cables.

  2. Using a #2 Phillips bit or screwdriver, install the four screws you removed previously to secure the lid of the shaft cap.

Installing the Mount Shrouds

  1. Using a 4 mm hex bit or wrench, install the screws (1) that secure the mount shroud (2) to the mount base.
    GARMIN GT56UHD-TR Force Kraken Trolling Motor - Installing the Mount
Shrouds

  2. Repeat this step to install the mount shroud on the opposite side.

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