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FILTER
GYRO DIRECTIONNEL
( SI INSTALLE ) DIRECTIONAL GYRO INDICATOR ( IF INSTALLED )
TUYAUTER E DE MISE A L'AIR LIBRE VENT LINE
MISE A L'AIR LIBRE AIR VENT
Vacuum (normal and emergency) - Schematic
Figure 1A
ABAA
Validity : OPT or STD Post-MOD. 151 37-00-00 (CA) Page 3 SEP 04
PAGE INTENTIONALLY LEFT BLANK
ABAA
Validity : OPT or STD Post-MOD. 151 37-00-00 (CA, Page 4 JUN 01
NORMAL DISTRIBUTION
DESCRIPTION AND OPERATION
1. GENERAL
The aircraft can be fitted with a vacuum system providing the suction necessary to operate the attitude indicator and the directional gyro indicator.
The vacuum system consists of :
- a vacuum pump,
- a regulating valve (or vacuum relief valve),
- an air filter,
I - an additional air filter (if installed).
2. LOCATION (Figures 1 and 1A)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
Vacuum pump 1 100 121 37-11-01
Regulating valve 1 230 211L 37-11-00
Air filter 1 230 211L 37-11-00
Additional air filter (if installed) 1 120 121 37-11-01
3. DESCRIPTION
A. Vacuum pump
The vacuum pump is driven by the engine and provides the energy necessary for operation of the instruments supplied.
B. Regulating valve
The diaphragm type regulating valve incorporates a screw for adjustment. Regulation is obtained by a spring which controls the diaphragm. The valve is equipped with a foam filter and is located behind the firewall.
Pre-MOD. 151
If the gyros alarm option is installed, the regulating valve can be equipped with an S67 pressure switch for indicating.
Post-MOD. 151
The regulating valve is equipped with an S67 pressure switch for indicating.
C. Air filter
The paper filter is installed between the firewall and the instrument panel.
D. Additional air filter (if installed)
When a SIGMATEK, CHAMPION or AERO ACCESSORIES pump is installed, a filter is installed between the pump and the regulating valve.
AMA
Validity : OPT or STD Post-MOD. 151 37-11-00 (BA) Page 1 SEP 04
Normal distribution - Identification and location of components
Figure 1 - AIRBORNE pump
AAAA
Validity : OPT or STD Post-MOD. 151 37-11-00 (BA) Page 2 JUN 01
A - SIGMATEK vacuum pump
B - Regulating valve
C - Air filter
D - Air filter
E - CHAMPION or AERO ACCESSORIES vacuum pump
Normal distribution - Identification and location of components
Figure 1A - SIGMATEK. CHAMPION or AERO ACCESSORIES pump
WA
Validity : OPT or STD Post-MOD. 151 37-11-00 (BA) Page 3 SEP 04
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本文链接地址：TB20 MAINTENANCE MANUAL 37 真空 TB20飞机维护手册(4)
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