Bore Light Replacement

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	10 mins. for rear bore lights, 90 mins. for front bore lights (450w); 10 mins. for rear or front (450w GEM or 750w GEM)	Not Applicable

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non-Magnetic Service Tool Kit	1	-	5112581	-

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
Front Bore Light Assembly	1	-	See FRU Manual	-
Rear Bore Light Left Assembly	1	-	See FRU Manual	-
Rear Bore Light Right Assembly	1	-	See FRU Manual	-

Overview

Use this procedure to replace the front and rear bore lights.

Remove the bridge assembly. See Bridge and Longitudinal Drive Belt Replacement.
Remove the front end bell and place on the ground. See Front End Bell Removal and Installation.
Remove the two attachment screws.

Figure 1. Front Bore Light Assembly
Disconnect the bore light assembly.
Install the bore light assembly, using the two screws.
Connect the cable to the bore light assembly.

Make sure the 2 pin bore light connection locks properly into the 4 pin connector.
Confirm that the bore light works before reassembling the system.
Install the front end bell.
Install the bridge.
Remove LOTO and restore power by turning on the applicable breaker in the PDU.

Remove the three attachment screws.
Gently slide the bore light assembly down the inside wall of the rear end bell (this disconnects the bore light assembly from the cable).

Figure 2. Rear Bore Light Assembly
Slide in the new bore light assembly, making sure the cable connections mate to the cable.
Install the bore light assembly.

Make sure the 2 pin bore light connection locks properly into the 4 pin connector.

Remove LOTO from the PDU. See the MR Service Safety Manual, PN 5452735.
Press the bore light button on the operator control panel to test the bore lights.