b. Aero Accessories Tempest 400 series Pumps only. (Figure 10-1b.)
The Aero Accessories Tempest 400 Series Dry-Air pump(s) are direct replacements for the original
equipment Parker / Airborne pumps. The Aero Accessories pumps feature a wear indicator
inspection port which allows direct observation of pump vane wear.
For airplanes with frequent de-ice cycles, beginning at 200 hours time-in-service, and each 100
hours thereafter;
For airplanes with normal de-ice cycles, beginning at 300 hours time-in-service, and each 100
hours thereafter;
inspect the vacuum pumps as follows:
1. Remove engine cowling.
2. Ground magnetos and turn the fuel selector to OFF.
CA
UTION: DIRT, GREASE, OR DEBRIS IN THE AREA OF THE INSPECTION
PORT PLUG COULD CONTAMINATE THE PUMP IF THE PLUG IS
REMOVED PRIOR TO CLEANING.
3. Ensure the area around the inspection port plug is clean.
PIPER SENECA II SERVICE MANUAL
X - INSTRUMENTS 01/01/09
2E14D
Figure 10-1b. Vane Wear Measurement
WASHER.
(1.
E.
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