Rear End Bell Removal

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	1.5 hours	Not Applicable

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non ferrous M5 Allen Wrench	1	-	-	-
Non ferrous M4 Allen Wrench	1	-	-	-
Non ferrous Phillips Driver	1	-	-	-

Table 3. Safety

DANGER

Strong Magnetic Field!

Ferrous materials can become dangerous projectiles in the presence of the magnetic field Produced by the Signa Magnet.

Do not Bring any ferromagnetic tools or equipment into the magnet room.

Table 4. Required conditions
Condition	Reference	Effectivity
System Power must be turned OFF. Refer to System Cabinet PDU Main Breaker LOTO Procedure.	-	-

Remove following assembly and covers.
- Bridge assembly (Refer to Bridge Assembly.)
- Rear pedestal (Refer to Rear Pedestal Removal.)
- Rear trim ring (Refer to Rear Trim Ring.)
Remove the patient light end covers from the upper side of magnet bore by removing 2 bolts.

Figure 1. Patient Light End Cover Removal
Remove the patient lights from the magnet bore upper side. The patient light is secured by Velcro tape.

Figure 2.
Loosen the clamp screw, and remove hoses. (Refer to illustration 3)
Using an M5 Allen wrench, remove the two M6 bolts of fasteners which connect the RF coil and the rear end bell. (Refer to illustration 3)

Figure 3. Hose and Fixing Bolts Removal
Remove the cable cover from the rear end bell by removing 2 screws.

Figure 4.
Unlatch the clamp of OPT cables. (Refer to illustration 5.)
Disconnect the OPT fiber cables from LED Power Box assembly. (Refer to illustration 5.)

Figure 5. Disconnect OPT Cables
Remove the 6 bolts (M10 x6) securing rear end bell to the magnet.

Note:
Do not remove the rear end bell. The rear end bell is connected by speaker cable.

Figure 6. 6 Bolts Removal of Rear End Bell
Withdraw rear end bell until can access to speaker cable connector.
Disconnect the speaker cable from the magnet upper side.

Figure 7. Disconnect Speaker Cable
Remove the rear end bell from the magnet bore.

Figure 8. Rear End Bell Removal
Installation is reverse order of removal.

No finalization steps.