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Table of Contents

Copyright Table of Contents About this Document How to Get Help Removal Procedures 20 - Horizontal Thrust Tube Replacement Procedures 1 - Horizontal Thrust Tube

About this Document

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SYMBOL	DESCRIPTION
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There is no substitute for experience and/or training, especially with respect to the real purpose for which you plan to use this equipment. We encourage you to explore options beyond the scope of these materials to expand your knowledge and skills necessary to support your applications. In addition to this documentation, VideoRay offers training and technical support and hosts a general user discussion forum and user image gallery.

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Online Manual

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All Hours Self-Service / Crowd-Source Tools

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Operational Strategies and Tactics Support

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Horizontal Thruster Tube Removal Overview

Skill level recommended: Advanced

Total time required: Approximately 87 Minutes

Tools required:

• #2 Phillips Head Screw Driver
• 7/16 Inch Open End or Socket Wrench
• Strap Wrench or Rubber Coated Pipe Pliers
• 5/16 Inch Open End Wrench or Nut Driver
• 5/16 Inch Open End Wrench or Nut Driver (Additional)
• Wooden Dowel Rod 3/8" x 12"
• Dental Pick or equivalent
• 3/4 Inch Open End Wrench
• 1-1/4 Inch Open End or Deep Socket Wrench
• 9/64 Inch Allen Wrench

The following components must be removed:

• Float Block Kit
• Skid Kit
• Light Dome
• LED Light Module Assembly
• Horizontal Thruster Propeller Kit (Left and Right)
• Horizontal Thruster Cartridge Seal
• Horizontal Thruster Nozzle Kit
• Horizontal Thruster Cone Assembly
• Horizontal Thruster Drive Train Assembly
• Dome Retaining Rings and Main Hull Rods
• Front Dome
• Front Hull Ring Assembly with Camera
• Rear Dome
• Rear Hull Ring Assembly
• Desiccant Pack
• ROV Board Set
• Pressure Sensor Kit
• Vertical Thruster Kit
• ROV Wire Harness
• Horizontal Thruster Tube

See the corresponding sections of this manual for instructions for parts other than the Horizontal Thruster Tube.

Horizontal Thruster Tube Removal Procedures

Time required for this step: Approximately 5 Minutes (10 Minutes for both sides)

Tools required for this step:

• 9/64 Inch Allen Wrench

Parts involved in this step:

HT-001-GY Horizontal Thruster Tube

Quantity	Part Number	Part Description
1	HT-001-GY	Thruster Part Horizontal Tube (Pro 4)
1	MHU-006	Thruster Part Horizontal Tube Spacer
2	OR-122	O-Ring #122
1	HT-003	Thruster Part Horizontal Tube Spacer (Inside Main Hull)
2	91274A064	Screw #8-32 x 3/4" Socket Cap Steel Ultra Corrosion Resistant
2	98370A011	Washer #8 x 0.075" Flat SS

Steps

Note: The following step-by-step instructions apply to one side. Repeat these steps on both sides if you plan to remove both Horizontal Thrust Tubes.

1. From inside the main hull, remove the two 8-32 X 3/4 inch socket cap screws that hold the horizontal thruster tube to the main hull tube.

2. Remove the horizontal thruster tube from the main hull.

Horizontal Thruster Tube Replacement Overview

Skill level recommended: Advanced

Total time required: Approximately 92 Minutes

Tools required:

• 9/64 Inch Allen Wrench
• Torque Wrench
• Tef-Gel or equivalent
• Blue Loctite or equivalent
• 1-1/4 Inch Open End or Deep Socket Wrench
• O-Ring Lubricator
• 3/4 Inch Socket
• 5/16 Inch Open End Wrench or Nut Driver
• 5/16 Inch Open End Wrench or Nut Driver (Additional)
• Red Loctite or equivalent
• Strap Wrench or Rubber Coated Pipe Pliers
• Lint-Free Tissue or Rag
• 7/16 Inch Open End or Socket Wrench
• #2 Phillips Head Screw Driver

The following components must be replaced:

• Horizontal Thruster Tube
• ROV Wire Harness
• Vertical Thruster Kit
• Pressure Sensor Kit
• ROV Board Set
• Desiccant Pack
• Rear Hull Ring Assembly
• Rear Dome
• Front Hull Ring Assembly with Camera
• Front Dome
• Dome Retaining Rings and Main Hull Rods
• Horizontal Thruster Drive Train Assembly
• Horizontal Thruster Cone Assembly
• Horizontal Thruster Nozzle Kit
• Horizontal Thruster Cartridge Seal
• Horizontal Thruster Propeller Kit (Left and Right)
• LED Light Module Assembly
• Light Dome
• Skid Kit
• Float Block Kit

See the corresponding sections of this manual for instructions for parts other than the Horizontal Thruster Tube.

Horizontal Thruster Tube Replacement Procedures

Time required for this step: Approximately 5 Minutes (10 Minutes for both sides)

Tools required for this step:

• 9/64 Inch Allen Wrench
• Torque Wrench
• Tef-Gel or equivalent
• Blue Loctite or equivalent

Parts involved in this step:

HT-001-GY Horizontal Thruster Tube

Quantity	Part Number	Part Description
1	HT-001-GY	Thruster Part Horizontal Tube (Pro 4)
1	MHU-006	Thruster Part Horizontal Tube Spacer
2	OR-122	O-Ring #122
1	HT-003	Thruster Part Horizontal Tube Spacer (Inside Main Hull)
2	91274A064	Screw #8-32 x 3/4" Socket Cap Steel Ultra Corrosion Resistant
2	98370A011	Washer #8 x 0.075" Flat SS

Steps

Note: The following step-by-step instructions apply to one side. Repeat these steps on both sides if you are replacing both Horizontal Thrust Tubes.

1. Apply Tef-Gel to the main hull in the areas where the horizontal thruster tube spacers will contact the hull. Do NOT get Tef-Gel too close to the screw holes.

2. Place the two #8 SS washers on the two 8-32 X 3/4 inch socket cap screws and insert the socket screws with washers through the flat side of the "inside" horizontal thruster tube spacer.

3. From inside the main hull, install the two socket screws and spacer. The curved side of the spacers should be towards the hull.

4. Apply blue Loctite to the screw threads

5. Lubricate and install the #122 O-rings on both sides of the "between hulls" thruster tube spacers.

6. Orient the "between hulls" horizontal thruster tube spacers so that the notch is facing toward the front of the ROV and away from the main hull. The "between hulls" thruster tube spacer has two concave diameters to match the main hull and the thruster tube diameters. If installed incorrectly, the spacer will leak. When oriented with the notch away from the main hull, the "between hulls" thruster tube spacer's concave surfaces will match the corresponding component diameter.

7. Place the "between hulls" horizontal thruster tube spacer in position over the two socket screws.

8. Orient the horizontal thruster tube along side of the main hull with the holes for the wire harness aligned and the external threads for the light dome towards the front of the ROV.

9. Make sure the #122 O-rings are in position and will not be pinched.

10. Thread the socket screws into the horizontal thruster tube and tighten them evenly to 35 inch-pounds (3.95 Nm).