Install the end bracket

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FIGURE 4-6. Bearing Installation.

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

Install the generator assembly

TM 55-1905-223-24-3

(4) Finish installing the rotor in the generator stator by hand. Rock the rotor from side to side or twist it while pushing

it into the stator. Continue until the main rotor poles are even with the main stator (Figure 4-2d).

d. Install the end bracket (1, Figure 4-2).

NOTE

Make sure that the permanent magnet exciter harness attached to the stator is through the end

bracket and the harness is retained by the internal wire clamp. The harness is difficult to install when

the end bracket is on the generator. Make sure that the main exciter stator leads will be at the top of

the generator.

(1) Lift the end bracket and rotor to pilot the end bracket into the generator frame recess (Figure 4-2b).

(2) Install the capscrews which hold the end bracket to the generator frame. Tap the end bracket lightly as the

capscrews are tightened (Figure 4-2b).

(3) Pull the main exciter leads (X and XX) and the permanentmagnetic exciter stator leads (P2, P3 and P4) through

the hole in the frame terminal box and connect the leads to the corresponding terminals on the auxiliary terminal

box.

e. Install the permanent magnet exciter rotor and stator as follows:

(1) Place the permanent magnet exciter rotor on the generator shaft. Align the dowel pin in the shaft with the locating

hole in the rotor and push rotor into position (Figure 4-1f).

(2) Install the center rotor retaining capscrew (Figure 4-1e) and torque to 15to 20 ft-lb (20 to 27 N ).

(3) Install the permanent magnet exciter stator housing in the end bracket recess with the stator leads at the top

(Figure 4-1d). Tap the housing lightly to seat it into the recess.

CAUTION

The rotor is highly magnetic and attracts the stator. Use care not to damage the stator winding

during installation. Also be careful not to get your fingers pinched in the installation process.

(4) Align the location mark on the permanent magnetic excitor housing with the location m rk on the end bracket.

(5) Install the four capscrews and clamps that hold the permanent magnetic excitor housing to the end bracket

(Figure 4-1c). Torque the capscrews to 15 to 20 f-lb (20 to 27 N ).

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