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PNEUMATIC STARTER AND VALVE SYSTEM - DESCRIPTION AND OPERATION
______________________________________________________________
1. Starter
_______ The starter converts the compressed air flow coming from an engine, the APU or an external air source into a high torque rotary movement. This movement is transmitted to the engine HP rotor through the engine accessory drive system. The physical and operational characteristics of the starter are listed in Table 001. The four inch diameter engine starter shutoff valve (SOV) is normally closed, electrically controlled and pneumatically operated.
2. Component Location
__________________
**ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
(Ref. Fig. 001)
R **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499,
(Ref. Fig. 001A)
**ON A/C ALL
The starter is installed at the rear of the accessory gearbox on the right
side.
The starter shutoff valve is installed on the fan case at 3:00 o'clock
position.
-------------------------------------------------------------------------------FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF. -------------------------------------------------------------------------------
- STARTER 438 438AR 80-11-10 448 448AR
- VALVE-STARTER SHUTOFF 436 438AR 80-11-20 438BR
446 448AR 448BR
3. Component Description
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Starter and Shutoff Valve Location
Figure 001
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INTENTIONALLY BLANK
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Starter and Shutoff Valve Location
Figure 001A
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**ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
A. Description
(1) Starter (Ref. Fig. 002) The starter consists primarily of an air inlet plenum and exhaust housing assembly (1) containing a turbine wheel stator (2) and radial containment ring (4), a high-speed pinion (9), a turbine wheel (3), a planetary gear set (25), three low speed pinions (24), an internal spur gear (ring gear) (23), a pawl and ratchet clutch assembly (13), a drive shaft assembly (17A), an output shaft (17), a carbon seal
(16) and a gear housing assembly (10). The gear housing assembly (10) provides for installation of magnetic drain plug assembly (22), oil overflow plug (19) and oil filler plug (31). The magnetic drain plug (22) consists of an inner magnetic drain plug and an outer check valve plug. The outer check valve plug will prevent oil draining when magnetic plug is removed.
(2) Starter shutoff valve (Ref. Fig. 003) The starter shutoff is composed of two major sections, the valve flow body section and the pneumatic actuator and control section. The valve flow body section consists of the flow body, butterfly plate shaft, bearings and seals enclosed in the valve body. The pneumatic actuator and control section consists of the controlling solenoid, diaphragms, torsion closing mechanism, shaft actuating linkage, electrical position indicating switch and pneumatic heating element.
R **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499,
A. Description
(1) Starter (Ref. Fig. 002) The starter consists primarily of an air inlet plenum and exhaust housing assembly (1) containing a turbine wheel stator (2) and radial containment ring (4), a high-speed pinion (9), a turbine wheel (3), a planetary gear set (25), three low speed pinions (24), an internal spur gear (ring gear) (23), a pawl and ratchet clutch assembly (13), a drive shaft assembly (17A), an output shaft (17), a carbon seal
(16) and a gear housing assembly (10).
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Starter Figure 002 (SHEET 1) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 起动 STARTING(5)
