71-43 Engine Monitoring Unit (EMU)
Refer to R66 Illustrated Parts Catalog (IPC) Figure 71-19.
NOTE
The electronic monitoring unit (EMU) is a serialized component
assigned to the engine. When removing the engine, remove the
engine's EMU per Section 71-43, as required.
A. Removal
1. Remove hardware securing F003-4 (RH) seat back assembly to cabin.
2. Disconnect F059-01 (cabin) electrical harness "EMU" plug and F049-07 (USB)
harness plug from EMU.
3. Remove hardware securing EMU to bulkhead and remove EMU. Cap receptacles.
B. Installation
1. Remove caps, position EMU on bulkhead, and install hardware. Verify security.
2. Connect F059-01 (cabin) electrical harness "EMU" plug and F049-07 (USB) harness
plug to EMU.
3. Turn BATTERY switch ON. After 10 seconds press annunciator panel test button;
verify EMU amber warning segment illuminates, and is solid, indicating normal EMU
operation. (See R66 Pilot's Operating Handbook Section 7 for complete description.)
Turn BATTERY switch OFF.
4. Install hardware securing F003-4 (RH) seat back assembly to cabin.
C. Downloading EMU Data
NOTE
An EMU USB receptacle is located inside the aft right seat
baggage compartment, on the underside of the aft ledge. Use a
flashlight and mirror when inserting USB cable into receptacle.
Download summary or diagnostic data per RR300 Series Operation and Maintenance
Manual (OMM).
SEP 2012 R66 Maintenance Manual Chapter 71 Powerplant Page 71.17
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