Cessna 182 1978 - Static System Test Equipment

MODEL 182 & T182 SERIES SERVICE MANUAL
NOTE
Air bulb with check valves may be obtained
locally from a surgical supply company. This
is
the type used in measuring
blood pressure.
THICK-WALLED
PRESSURE
SURGICAL HOSE
PRESSURE BLEED-OFF
SCREW (CLOSED)-
AIR
BULB
WITH CHECK
VALVES
CLAMP
THICK-WALLED
SURGICAL
HOSE
CHECK VALVE
SUCTION
CHECK VALVE
TO APPLY SUCTION:
1. Squeeze
air bulb to expel
as much air as possible.
2. Hold suction hose firmly against static pressure source opening.
3. Slowly release air bulb to obtain
desired suction, then pinch hose shut tightly
to trap suction in
system.
4. After leak test, release suction slowly by intermittently allowing a small amount of air to enter
static
system. To do
this, tilt end of suction
hose away from
opening, then immediately
tilt it
back against opening. Wait until vertical speed indicator approaches zero, then repeat. Con-
tinue to admit this small amount of air intermittently until all suction is released, then remove
test
equipment.
TO APPLY PRESSURE:
Do not apply positive pressure with airspeed indicator or vertical speed
indicator connected into static system.
1. Hold pressure hose firmly against static pressure source opening.
2. Slowly squeeze air bulb to apply desired pressure to static system. Desired pressure may be
maintained by repeatedly squeezing bulb to replace any air escaping through leaks.
3.
Release pressure
by slowly opening pressure
bleed-off screw,
then remove test
equipment.
Figure 15-5.
Static
System
Test Equipment
15-10