86 Chapter 4
Replacement Procedure
Fan Assembly Replacement
Fan Assembly Replacement
Tools Required
• torque screwdriver, T15 and T20
• torque screwdriver, T10 (set to 9 in-lb)
• box torque wrench, 9/16 inch (set to 30.4 in-lb)
Removal Procedure
Refer to Figure 4-17 for this procedure.
Step 1. Remove the Outer Cover as described in “Outer Cover Replacement” on page 54.
Step 2. Remove the three 9/16 inch nuts and the three washers (item 1) from the BNC connectors.
Step 3. Remove the seven TORX T10 screws (item 2) fastening the rear panel.
Step 4. Cut the cable ties (item 3) fastening the Fan Assembly cables.
Step 5. Disconnect the two cable connectors (item 4) from the Fan Assembly.
Step 6. Remove the six TORX T10 screws (item 5) fastening the Fan Assembly.
Step 7. Lift the Fan Assembly.
Step 8. Remove the eight rivets (plastic) (item 6) fastening the Fans for the blacket.
Step 9. Peel off the tape (item 7) fastening the Fan Assembly cables.
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
NOTE Set a torque to 30.4 in-lb for box torque wrench when fasten the 9/16 inch nuts and the
washers (item 1).
Set a torque to 9 in-lb for torque driver when fasten the TORX T10 screws (item 2, and
item 5).
Do not use the rivets (item 6) used once.
Pull the Fan Assembly cables before paste on tape.
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