350 Chapter 11
Assembly Replacement Procedures
RF Section E4446A, E4447A, E4448A
Figure 11-29 Preamplifier and Bracket
Replacement
1. Attach the preamplifier to the bracket using the four screws
removed earlier. Torque to 3 inch-pounds.
2. Attach the ground wire to the ground lug of the preamplifier.
3. Install the preamplifier/bracket assembly into position and attach
with the three screws (1). Refer to Figure 11-28. Torque to
9 inch-pounds.
4. Refer to Figure 11-27. Replace cables W103, and W104 with AT3.
Torque to 9 inch-pounds.
5. Refer to Figure 11-30. Replace the wires onto the preamplifier in the
positions shown.
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