Repair Crankshaft and Gear Group.

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Table 4-7. Fuel and Water Pump Bore Bushing Specifications - Inch (mm)

TM-55-1905-223-24-1 Main Propulsion Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

Check for possible cracks using magnaglo tester.

TM 55-1905-223-24-1

4-15. Repair Crankshaft and Gear Group.

This task covers:

Repair.

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's rail

Camshaft and gear group removed,

and marine diesel engines,

Timing fixture P/N 3375522

Camshaft installation pilots P/N 3376280

Driver bushing kit P/N 3376633

Bearing and bushing inserter P/N 3376637

Torque wrench kit P/N 3377216

Machinist measuring tool set

Magnaglo tester P/N H620

Materials/Parts

High pressure lubricant, Item 19, Appendix C

Spur gear P/N 3004681, 3008970

Camshaft gear P/N 3008971

Helical gear P/N 3004683

Camshaft P/N 3006298, 3006299

Cleaning solvent, Item 15, Appendix C

REPAIR

CAUTION

Do not touch the machined surface with bare hands after the camshaft has been

cleaned. This will cause rust to form.

Clean camshaft assembly with solvent.

NOTE

Marks on the lobes and journals that cannot be felt with fingernail are acceptable.

Visually inspect camshaft for scuffed, scored or cracked lobes. Discard camshaft if any of these

conditions exist.

Measure bushing journals' outside diameter. Replace camshaft if journals are not between 2.995 inch

(76.07 mm) and 2.997 inch (76.12 mm).

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