FIGURE 4-50. Positioning Bearing Grooves

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FIGURE 4-49. Bearing Shell Identification

TM-55-1905-223-24-5 Bowthruster Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 4-51. Installing the Bearing Shell

TM 55-1905-223-24-5

(3) Use clean Lubriplate 105 or its equivalent to lubricate the upper thrust bearings.

(4) Install the upper thrust bearings in the No. 7 main bearing saddle.

CAUTION

The grooves must be toward the crankshaft (FIGURE 4-50) .

FIGURE 4-50. Positioning Bearing Grooves.

NOTE

Push the crankshaft toward the rear of the engine to install the front

bearing and to the front of the engine to install the rear bearing.

(5) Install the dowel ring counterbore of the cylinder block.

(6) Install the lower main bearing shell as follows:

(a) Use clean Lubricate 105 or its equivalent to lubricate the bearing shell to the crankshaft

journal mating surface.

(b) Align the bearing shell with the dowel ring.

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