Technical data

13773-001
34-10
Page 530 Nov 2000
(a) Open circuit breaker panel to gain access to altitude digitizer.
(b) Identify and disconnect lower static line at altitude digitizer branch tree and cap off branch
tee.
CAUTION: Never blow air through the line toward the instruments. To do so will seri-
ously damage the instruments.
(c) Blow clean, low-pressure air from the disconnected line at the altitude digitizer branch tree
to the static ports.
(d) Connect static line at altitude digitizer branch tree.
(e) Perform static system leakage test. (Refer to 34-10)
(f) Close and secure circuit breaker panel.
C. Altitude Digitizer (See Figure 34-101)
(1) Removal - Altitude Digitizer
(a) Ensure BAT 1, BAT 2, and AVIONICS master switches are in off position.
(b) Pull ENCODER/TRANSPONDER circuit breaker.
(c) Remove trim panel from right side of center console. (Refer to 25-10)
(d) Disconnect cable from altitude digitizer.
(e) Disconnect static line to altitude digitizer.
(f) Cut safety wire securing knurled nut.
(g) Loosen knurled nut and remove altitude digitizer from mounting tray.
(2) Installation - Altitude Digitizer
(a) Acquire necessary tools, equipment, and supplies.
(b) Position altitude digitizer in mounting tray and tighten knurled nut.
(c) Safety wire knurled nut to mounting tray.
(d) Connect cable to altitude digitizer.
(e) Connect static line to altitude digitizer.
(f) Perform Static System Leak Inspection/Test. (Refer to 34-10)
(g) Install right-side center console trim panel. (Refer to 25-10)
(h) Reset ENCODER/TRANSPONDER circuit breaker.
(3) Inspection/Check - Static System Leak Test
(a) Acquire necessary tools, equipment, and supplies.
Description P/N or Spec. Supplier Purpose
Safety Wire - Any Source Safetying
Description P/N or Spec. Supplier Purpose
Sphygmomanometer Pres-
sure Bulb with Check Valve
21-140 Omron Health Care
Inc.
Simulate static air
pressure.
Surgical Hose 21-321 Omron Health Care
Inc.
Bulb attachment.