FIGURE 4-38. Installing Rings

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ASSEMBLY

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

FIGURE 4-39. Oil Control Ring

TM 55-1905-223-24-5

WARNING

Use insulated gloves to prevent injury from boiling water or the

heated piston.

(4)

Remove the piston (9) from the water or the oven.

(5)

Align the pin bore of the rod (1) with the pin bore of the piston (9), and install the piston pin (8).

CAUTION

Do not use a hammer to install the piston pin. The piston will be

damaged.

NOTE

The cylinder number on the piston top must be toward the

bearing tang side of the rod.

(6)

Install a new snap ring (7) in the second piston pin bore snap ring groove. The snap ring must be

seated completely in the snap ring groove.

Piston rings.

(1)

Use a piston ring expander to install the piston rings (3, 4, 5, 6) with the part number, mark, or the

work "TOP" toward the top of the piston (FIGURE 4-38) .

FIGURE 4-38. Installing Rings.

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