0071 00TM 1-6625-724-13&P0071 00-8g. Connect AH-64 DAU cable (29304600) to the SPU AH-64A. For the AH-64D connect the AH-64 DAU cable tothe blade tracking test port located at the upper right hand section of the co-pilot’s SSU mount.NOTEFor AH-64D main rotor track and balance, ensure that theFCR select switch on the Blade Tracking Test Port is in theTRACK position. h. Route AH-64 to DAU cable under the copilot's seat and around to the DAU.i. Connect AH-64 to DAU cable terminations to the DAU receptacles marked MULT-CH, TACHO 1, and 28 Vdc.j. Place CADU in aircraft. Connect CADU to DAU cable (29325601) to CADU and to DAU receptacle markedCADU.Figure 2. DAU installation at CPG stationPROCEDURE 3: EQUIPMENT INSTALLATION (SPU BYPASS) NOTEThis step provides instructions for bypassing the SPU.This is done if the SPU is defective. If no SPU error issuspected, proceed to procedure 4.a. Locate the lateral permanently installed accelerometer above and to the rear of the pilot’s head and remove it.Install accelerometer (28110900). See figure 3.b. Connect accelerometer cable (29105605) (found in the basic kit) to the lateral accelerometer and connect tothe DAU receptacle marked ACC 1. c. Install accelerometer (28110900) on accelerometer mounting bracket (29313000). Orient the accelerometervertically, with the connector facing down. For the AH-64A mount the bracket on the right-hand bulkheadpanel, near the gunner's right knee, third screw down, see figure 4. For the AH-64D remove the forwardavionics control head from the copilot/gunners right hand console and mount the vertical accelerometer nearthe on board accelerometer, see figure 4.d. Connect accelerometer cable (29105605) to the vertical accelerometer, and connect to the DAU receptaclemarked ACC 2.CAUTIONDo not secure disconnected tachometer cable in nextprocedure to any moving components, which mayinterfere with flight controls.AVAData Acquisition Unit“DAU”
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