FIGURE 4-44. Removing Dowel Ring

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FIGURE 4-42. Crankshaft Group

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

REPLACE/REPAIR

TM 55-1905-223-24-5

(3) Remove the lower main bearing shell from the crankshaft journal.

NOTE

Mark the bearing shells with the journal number from which they were removed.

(4) Remove the dowel ring (FIGURE 4-44) .

(5) Remove the thrust bearings from the No. 7 cap.

(6) Mark these bearings from the No. 7 cap.

CAUTION

Do not damage the crankshaft when removing the thrust bearings.

(7) Use a blunt tool to remove the upper thrust bearings.

(8) Mark these bearings as the top front and the top rear thrust bearings.

FIGURE 4-44. Removing Dowel Ring.

(9) To remove the upper main bearing shell, install a tool similar to the one in the oil hole of the

main bearing journal as shown in FIGURE 4-45 .

FIGURE 4-45. Removing Main Bearing Shell.