FIGURE 4-48. Rear Counterweight Markings

Custom Search

FIGURE 4-47. Front Counterweight Markings

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

REPLACEMENT

TM 55-1905-223-24-5

(4) Carefully inspect the crankshaft journals and the thrust flange at the main bearing journal. If the

surfaces have damage or scratches, grind the crankshaft If the crankshaft is ground, oversize main

and connecting rod bearings and oversize thrust must be installed.

(5) Put a mark on the crankshaft after grinding. This will show the correct size for the main and

connecting rod bearings. Put this mark on the front counterweight. (See FIGURE 4-47) .

(6) Put a mark for the oversize trust bearing on the rear counterweight (FIGURE 4-48) .

(7) Inspect the crankshaft key for damage. Replace as required.

NOTE

If grinding of journals is to be done, follow the instructions

provided with the grinding equipment.

(8) Replace crankshaft if repair is not possible.

FIGURE 4-48. Rear Counterweight Markings.

Change 2

4-90