Fig. Q.7. Drive End Bracket with Circlip Retained Bearing

Fig. Q.5. Tightening Pole Shoe Retaining Screws - TM-55-1930-209-14P-9-4_754

Fig. Q.8. Fitting Commutator End Bracket to Yoke - TM-55-1930-209-14P-9-4_756

TM-55-1930-209-14P-9-4 Water Purification Barges (NSN 1930-01-234-2165) Electric Power System Manual
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ELECTRICAL EQUIPMENT—Q.9 1. Remove the old bearing bush from the end bracket. The bearing can be withdrawn with a suitable extractor or by screwing a j inch tap into the bush for a few turns and pulling out the bush with the tap. Screw the tap squarely into the bush to avoid damaging the bracket. 2. Withdraw and clean the felt ring retainer and felt ring. 3. Insert the felt ring and felt ring retainer in the bearing housing, then press the new bearing bush into the end bracket, using a self-extracting tool of the type and in the manner shown in Fig. Q.6-the fitting pin or mandrel portion being of 0.5924 in (15,05 mm) diameter and highly polished. To withdraw the pin after pressing the bush fully home, turn the nut against the sleeve while gripping the squared end of the fitting pin. Porous bronze bushes must not be opened out after fitting, or the porosity of the bush may be impaired. NOTE: Before fitting the new bearing bush it should be allowed to stand for 24 hours completely immersed in a good grade Fig. Q.6. Tool for fitting Commutator End Bracket Bush. Fig. Q.7. Drive End Bracket with Circlip Retained Bearing. S.A.E. 30 engine oil: this will allow the pores of the bush to be filled with lubricant. The enclosed ball bearing at the driving end is replaced as follows:— 1. Drill out the rivets, or remove the screws whichever is applicable, which secure the bearing retaining plate to the end bracket and remove the plate. 2. Press the bearing out of the end bracket. 3. Remove and clean the corrugated washer and felt ring. 4. Before fitting the replacement bearing. see that it is clean and pack it with high melting point grease. 5. Place the felt ring and corrugated washer in the bearing housing in the end bracket. 6. Locate the bearing in the housing and press it home. 7. Fit the bearing retaining plate. Insert the new rivets from the pulley side of the end bracket and open the rivets by means of a punch to secure the plate rigidly in position. If secured by screws, fit the screws and tighten. Ball Race Bearing in Drive End Bracket (Circlip Secured Assembly) This arrangement is shown in Fig. Q.7. 1. Insert the tip of a screwdriver in the extractor notch and prise free the circlip. 2. Remove the bearing retaining plate and press out the bearing.

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