Twin Disc Marine Transmission MGX-5114IV

Warning: Do not obstruct the flywheel housing vents

Operating air temperatures within range (-6°C to 82°C)?

Enter the current hours of operation

Visual inspection of the coupling after the first 100 hours of operation completed?

Any signs of torsional vibration, misalignment, degradation by contaminants (oil), heat, ultraviolet radiation, and excessive system torque?

Any cracks or other signs of distress on the surface of the rubber?

Coupling access is not restricted?

Frequent check of the flywheel housing vents done?

Any accumulation of residue at the vents?

With a new transmission, change the oil and filter element within first 50 hours of operation. Change the oil more frequently if conditions warrant.

Remove and clean the suction strainer at every oil change or sooner if necessary. See illustrations in Section 6.2 for the location of the suction strainer for your transmission.

Drain the transmission by removing the oil drain plug from the rear/bottom of the transmission. See the illustrations in Section 6.2 or service literature for your transmission for location of transmission and filter drain plugs.

NOTE: Dispose of used oil and oil filters in accordance with federal, state or local laws. Exercise precautions to prevent environmental contamination during any transmission servicing procedure.

1. Remove the breather or the oil fill closure from the top of transmission case.

2. Pour new oil through breather or closure opening. Fill with recommended clean oil, taking necessary precautions to prevent entry of dirt or debris. (See lubrication plate on transmission and information transcribed to the front of this manual for additional oil information.);

Check oil level daily or every 10 hours of engine operation

Check with engine running at low idle and with marine transmission in neutral

Check the oil level with the transmission oil temperature in normal operating range

Place the transmission control in NEUTRAL

Check the transmission oil pressure (oil pressure gauges are required for all installations)

Pressure should register within 15 seconds

Change oil and filter element after each 1000 hours of operation, or six months, whichever comes first. Change the oil more frequently if conditions warrant.

Remove and clean the suction strainer at every oil change or sooner if necessary. See illustrations in Section 6.2 for the location of the suction strainer for your transmission.

Drain the transmission by removing the oil drain plug from the rear/bottom of the transmission. See the illustrations in Section 6.2 or service literature for your transmission for location of transmission and filter drain plugs.

NOTE: Dispose of used oil and oil filters in accordance with federal, state or local laws. Exercise precautions to prevent environmental contamination during any transmission servicing procedure.

1. Remove the breather or the oil fill closure from the top of transmission case.

2. Pour new oil through breather or closure opening. Fill with recommended clean oil, taking necessary precautions to prevent entry of dirt or debris. (See lubrication plate on transmission and information transcribed to the front of this manual for additional oil information.);

Warning: This procedure requires trained personnel with PPE!

Check the suction screen and filter element after eight hours of operation

Describe the condition of the suction screen and filter element

Check for lint or other material that may collect from rags or towels used in the parts cleaning process

Check for chips or shavings particularly if the transmission has had a problem that caused debris in the system

For units with spin-on filters, this will require cutting the filter element apart to access the element core

If the filter is clean, install a new filter element and then change the oil and filter element after 1000 hours of service

If the filter is dirty, change the element and operate for another eight hours. Check the filter again