Piper Navajo PA-31 Service Manual page 658

PIPER NAVAJO SERVICE MANUAL
10-21b. INSTALLATION OF DRY PNEUMATIC PUMP.
a. Place the pump gasket in proper place and attach the pump to its mounting point
and secure the pump with the four nuts. Torque the four mounting nuts to 40-50
inch-pounds.
CAUTION
The only dry air pump mounting gasket authorized and
approved for use on the Airborne dry air pump is the
Airborne gasket B3-1-2, Piper P/N 751 859. Use of any other
gasket may result in oil seepage or leakage at the mounting
surface.
b. Connect the inlet and outlet hoses to the pump and secure the hoses to the ports
with the hose clamps.
c. Replace engine cowling.
10-22. STALL WARNING INDICATOR AND LIFT DETECTOR. The stall warning
light is a red light mounted on the top left instrument panel. The stall warning transmitter
is mounted in the leading edge of the right wing and activates the light when the airplane
approaches a stall. (Also refer to Paragraph 11-95.)
10-23. REMOVAL OF LIFT DETECTOR. (Refer to Chapter 11.)
10-24. INSTALLATION OF LIFT DETECTOR. (Refer to Chapter 11.)
10-25. ADJUSTMENT OF LIFT DETECTOR. (Refer to Chapter 11.)
10-26. MANIFOLD PRESSURE GAUGE FILTERS. The manifold pressure gauge has two
filter assemblies secured to the rear of the gauge. The removal of the top instrument access
panel is necessary to gain access to the filter assemblies. Remove the two filter assemblies
and replace the filter elements during the 500 hour inspection of the airplane, or sooner, if
conditions indicate a restricted filter element.
10-27. EXHAUST GAS TEMPERATURE GAUGE. This instrument, which is commonly
referred to as EGT, is used to aid the pilot in selecting the economical fuel-air mixture for
cruising flight at a power setting of 75% or less. It is a sensing device to monitor the fuel-air
mixture entering the engine cylinders. This gauge is not adjustable. If it is found defective after
checking with the troubleshooting chart, it should be replaced.
Revised: 1/29/82
INSTRUMENTS
3D20