TM 55-1945-205-24-3-3
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UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
WARPING TUG
MARINE GEAR
DESCRIPTION AND DATA
EQUIPMENT CHARACTERISTICS, CAPABILITIES AND FEATURES
Marine Gear
The marine gear provides the capability to reverse the directional rotation of the other drive train components making
it possible to backflush the pump-jet. It is mounted directly to the flywheel housing of the diesel engine. The gear is
equipped with an integral hydraulic system consisting of a pump, shifting valve and internal hydraulic cylinders. The
pump utilizes the gear lubricating oil to operate hydraulic cylinders which shifts the gears to the backflush, neutral or
engaged configurations. The shifting valve is solenoid actuated from a toggle control switch in the operators cab. In
addition to powering the shifting cylinders, the pump also circulates case oil through an oil cooler that is plumbed
into the engine raw water cooling system.
