How to change the gear oil in a Volvo Penta Duoprop outdrive

Introduction

Changing the gear oil in your Volvo Penta Duoprop outdrive is essential for maintaining optimal performance and longevity. This tutorial will guide you through the process step-by-step, ensuring you have the right tools and knowledge to complete the task safely and effectively.

Step 1: Gather Necessary Tools and Materials

Before starting the oil change, make sure you have all the required tools and materials at hand:

• Gear Oil: Verify your outdrive's capacity; the DPS-D1 drive uses approximately 2.6 quarts. Consider these options:
  • Volvo Penta 1141679 Gear Oil (qty 3)
  • Bulk gallon size (1141860) for future savings
• Prop Shaft Grease: Grease (828250) or a less expensive option here.
• 3/8 - 16 UNC Pump: Oil pump for easy dispensing.
• Prop Tool: Use Prop Tool (3862797) or a budget-friendly alternative here.
• 30mm Socket: Socket set if needed.
• Torque Wrench: Torque wrench for proper tightening.
• O-rings: Drain and vent plug O-ring 3-pack (3855081) and dipstick O-ring 3852045 (may be needed).
• Oil Drain Pan: Ensure it accommodates the outdrive's skeg. Options can be found here and here.
• Personal Protective Equipment: Nitrile gloves and shop towels for cleanliness:
  • Nitrile gloves (Large) or X-Large
  • Shop towels

Step 2: Prepare the Outdrive

• Lower the outdrive fully to ensure proper drainage.
• Place the oil drain pan underneath the outdrive to catch the old gear oil.

Step 3: Drain the Old Gear Oil

• Locate the drain plug at the bottom of the outdrive.
• Use the appropriate socket to remove the drain plug. Let the oil fully drain into the pan.
• Replace the drain plug O-ring if necessary.

Step 4: Add New Gear Oil

• Reinstall the drain plug once the oil has drained completely.
• Use the pump to add new gear oil through the vent plug located above the drain plug. Ensure you use the correct oil for your model.
• Fill until the oil begins to spill out of the vent hole.

Step 5: Check and Secure the Oil Level

• Replace the vent plug securely, ensuring a tight seal.
• Use the torque wrench to tighten the plug to the manufacturer's specifications.

Step 6: Grease the Prop Shaft

• Apply a suitable prop shaft grease to ensure proper lubrication.
• Follow the manufacturer's recommendations for application.

Conclusion

Regularly changing the gear oil in your Volvo Penta Duoprop outdrive is crucial for maintaining its performance. By following these steps, you can ensure a smooth and efficient oil change process. Prepare your tools, follow each step carefully, and you’ll be set for successful maintenance. For future oil changes, consider purchasing gear oil in bulk to save on costs. Happy boating!