Abstract :
The reservoir pressurization system is a system that functions to process and
flow the air pressure that will be used by hydraulic fluid in the reservoir so that it
can flow to the hydraulic pump. This system can be damaged resulting in reduced
air pressure in the reservoir. This can result in hydraulic fluid in the reservoir
unable to flow to the hydraulic pump.
The research process begins with a literacy study regarding the reservoir
pressurization system on the Airbus A320 aircraft both from observation and the
Aircraft Maintenance Manual (AMM). Then proceed with conducting research on
the Airbus A320 aircraft which is experiencing an overhaul. The first check was
carried out on ECAM which showed that the air pressure in the reservoir had
decreased.
After that, check the air pressure source, namely high pressure compressor
engine one and pneumatic system engine two. After checking the source and not
finding any failures, the check is carried out on the reservoir pressurization
component. According to the Airbus A320 Trouble Shouting Manual, if the air
pressure at the pressure gage is less than 50 psi it is necessary to check the check
valve and relief valve. The result of this check was that the check valve was
damaged and the component had to be repaired. Repairs made are by replacing
these components. After replacing the check valve component, the reservoir
pressurization system, the air pressure entering the reservoir returns to normal.