April 1, 2025
Introduction
Oil Change Intervals for Twin Disc MG516 Marine Gear
Recommended Oil Change Intervals
Best Practices for Changing Oil
1. Warm Up the Transmission First
2. Use a Clean Catch Pan with High Capacity
3. Access the Drain Plug Safely
4. Inspect the Magnetic Plug
5. Replace Sealing Washer
6. Fill with Correct Oil
7. Check Level with Dipstick or Sight Glass
8. Log the Service
Filter Element Replacement for Twin Disc MG516 Marine Gear
Types of Filters Used
Filter Replacement Interval
Filter Replacement Procedure
1. Locate the Filter Housing
2. Prepare for Fluid Loss
3. Remove the Old Filter
4. Inspect O-Ring Surface
5. Prime the New Filter
6. Install the New Filter
7. Check for Leaks After Startup
Visual Inspection Checklist for Twin Disc MG516 Marine Gear
Suggested Inspection Frequency
External Inspection Points
Oil Leaks
Housing Cracks or Corrosion
Flange and Coupling Bolts
Oil Cooler and Lines
Mounting Bolts and Isolation Bushings
Internal Clues (Non-Invasive)
Documentation and Record-Keeping
Advanced Preventative Checks
1. Shaft Runout Measurement
2. Hydraulic Pressure Testing
3. Infrared Temperature Scan
Seasonal Maintenance Tips
Common Maintenance Mistakes to Avoid
Maintenance Supplies Checklist
Summary
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April 1, 2025
Introduction
Essential PPE Items
Inspection and Maintenance of PPE
Lockout/Tagout (LOTO) Procedures for Twin Disc MG516 Marine Gear
Why LOTO Is Critical for Marine Gears
Step-by-Step Lockout/Tagout Procedure
Recommended Tools for Twin Disc MG516 Marine Gear Service
Basic Hand Tools
Hydraulic Service Tools
Diagnostic Tools
Heavy Lifting and Support Tools
Seal and Gasket Tools
Cleaning and Preparation Supplies
Tool Storage and Maintenance
Shop Setup Recommendations
What Not to Use
Summary: Safety and Tooling for MG516 Work Done Right
Videos About Twin Disc Transmissions
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April 1, 2025
Introduction
Key Features of the MG516 Marine Transmission
Heavy-Duty Commercial Design
Smooth Hydraulic Shifting
Durable Reverse Gear System
Vertical Offset and Direct Drive Configuration
Robust Bearings and Internal Support Systems
General Specifications for Twin Disc MG516 Marine Gear
Model Designations for Twin Disc MG516 and MG5161
Gear Ratios for Twin Disc MG516 Marine Gear
Typical Gear Ratios:
Oil Capacity and Type for Twin Disc MG516 Marine Gear
Oil Capacity (Approximate):
Recommended Oil Type:
Oil Change Intervals:
Dry Weight and Dimensions of Twin Disc MG516 Marine Gear
Dry Weight:
General Dimensions (May vary by configuration):
Mounting Points:
Recommended Operating Pressures for Twin Disc MG516 Marine Gear
Operating Pressure Ranges:
Temperature Range:
Available Add-ons:
Summary
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April 1, 2025
Introduction For Twin Disc MG516 Marine Gear
Overview of the Twin Disc MG516 Marine Gear
What Are the MG516 and MG5161 Transmissions?
Key Features
Differences Between MG516 and MG5161
Why Regular Maintenance Matters For Twin Disc Marine Gears
1. Prolonged Equipment Life
2. Preventative Savings
3. Performance Consistency
4. Compliance With Manufacturer Recommendations
5. Safety
Who This Guide Is For
1. Fleet Operators
2. Commercial Boat Captains
3. Independent Marine Mechanics
4. Marine Engineers and Technicians in Remote Operations
Disclaimer
In the Next Sections
Routine Maintenance Checklist
Fluid Types and Oil Change Procedure
Tools and Supplies Needed
️ Step-by-Step Maintenance Procedures
Troubleshooting Common Problems
Recommended Aftermarket Parts
Tips for Rebuilds and Overhauls
Safety Protocols and Hazard Mitigation
Final Thoughts on Getting Started
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April 1, 2025
Key Features of the MG516
General Specifications
Personal Protective Equipment (PPE)
Lockout/Tagout Procedures
Recommended Tools
Oil Change Intervals
Filter Element Replacement
Visual Inspection Checklist
Draining Procedures
Refilling Procedures
Checking Operating Pressure
Replacing Hydraulic Seals
Clutch Pack Inspection
Gear Train and Tooth Wear
Bearing and Seal Inspection
Shaft Alignment and Runout
Heat Exchanger Inspection
Oil Flow Testing
Solenoid and Valve Cleaning
Testing Shifting Operation
Torque Specifications
Use of Gasket Sealant and RTV
Pre-Startup Checks
Rebuild Kits
Commonly Replaced Parts
When to Replace vs Rebuild
Common Symptoms and Causes
Diagnostic Tips
When to Call a Specialist
Preparing for Long-Term Lay-Up
Periodic Maintenance in Storage
Videos About Twin Disc Transmissions
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International: 305-545-5588