Replace/Repair Electric Starter Motor and Magnetic Switch Group. (FIGURE 2-11)

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SECTION V. UNIT MAINTENANCE PROCEDURES

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

FIGURE 2-11. Electric Starter and Magnetic Switch

TM 55-1905-223-24-5

MAINTENANCE OF BOWTHRUSTER DIESEL ENGINE

2-21. Replace/Repair Electric Starter Motor and Magnetic Switch Group. (FIGURE 2-11)

This task covers:

a. Removal

b. Repair

c. Replacement

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's-

Engine shut down and cooled to below 120

rail and diesel engines,

(50 ), TM 55-1905-223-10.

Engine tagged "Out of Service, Do Not

Operate."

Torque wrench (30-300 ft-lb),

5120-01-125-5190

Materials/Parts

Electrical engine starter

P/N 3021036

Magnetic switch

P/N 3050692

Warning tag, Item 25, Appendix C

REMOVAL

Disconnect cables from battery pack.

Tag and remove the electrical wiring (1,3) from the engine electrical starter (11) and solenoid

(2).

Tag and remove the wiring (3) from the magnetic switch (8).

Remove three capscrews (10) and remove starting motor (11) and magnetic switch (8).

When replacing the magnetic switch (8) only, remove the bolts (7), nuts (4), spacers (6) and

washers (5) and remove the switch (8) from the mounting bracket (9).

REPAIR

Repair at unit level consists of replacing the starting motor (11) and magnetic switch (8).

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