REPLACEMENT - TM-55-1905-223-24-20053

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Replace Torsional Coupling. (FIGURE 2-7)

TM-55-1905-223-24-2 Main Reduction Gear for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-7. Torsional coupling

TM 55-1905-223-24-2

e. Maneuver the coupling (1) with the sling rearward from the engine until thespring pins (11) protruding from the

housing (4) clear the flywheel adapter flange (5).

Raise the lifting sling enough so that the coupling assembly will clear the engine and gearbox components when it

swings to the side. Swing to theside and lower to the deck, placing the coupling assembly on a padded surface.

REPLACEMENT

a. Attach the lifting sling to the torsional coupling (1).

b. Raise the sling and swing the coupling in position between the engine and gearbox.

Lower the coupling (1) until it is aligned with the hub (8). Turn the hub (8) until the spring pins (9) are aligned with

their mating holes. Slide the coupling element (10) back to the hub (8). Install bolts (6) and washers (7) through

the hub (8).

d. Turn the coupling (1) until the spring pins (11) in the housing (4) align with the mating holes in the flywheel adapter

flange (5).

e, Slide the housing (4) forward to the adapter flange (5).

Install bolts (2) and washers (3) through the housing (4) into the adapter flange (5).

g. Remove the sling and return the equipment to service.

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