Replace/Repair Electric Starting Motor/Magnetic Switch Group

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REPLACEMENT - continued

TM-55-1905-223-24-3 Ship s Service Generator for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-5. Electric Starting Motor/Magnetic Switch.

TM 55-1905-223-24-3

2-25. Replace/Repair Electric Starting Motor/Magnetic Switch Group. (Figure 2-5).

This task covers:

a. Removal,

Repair,

Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's rail

Engine shut down and cooled below

120 (50 ). TM 55-1905-223-10.

and marine diesel engines,

Battery banks disconnected (starboard).

Torque wrench kit P/N 3377216

Materials/Parts

Electrical starter P/N 3021036

Magnetic switch P/N 3050692

REMOVAL

Tag and remove all electrical connections from the engine electrical starter (1).

Remove and tag all electrical connections from the magnetic switch (5).

Remove the three capscrews (9) from the electrical starter (1). Remove the starter, spacers (or shims) if used,

and magnetic switch (5).

CAUTION

If spacers or shims are used between the starter motor and the flywheel housing, mark

their position, and save. Use the same spacers or shims, placed in marked positions,

when installing a new or rebuilt starter.

When replacing only the magnetic switch, remove four hexagon nuts (2), four lockwashers (3), and four flat

washers (4). Remove the switch (5), four flat washers (6), and two vibration isolators (7)from the magnetic

switch bracket (8).

REPAIR

Repair of the electric starting motor/magnetic switch group consists of replacing the magnetic switch and engine electrical

starter.

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