Hydraulic System B Reservoir Pressure Gauge The hydraulic reservoirs are pressurised from the pneumatic manifold to ensure a positive flow of fluid reaches the pumps. A from the left manifold and B from the right (s… See more

Hydraulic Fuses Also in the wheel well can be seen the hydraulic fuses. These are essentially spring-loaded shuttle valves which close the hydraulic line if they detect a sudden increase in flow such as a burst downstrea… See more

This table shows the nominal quantities at different levels in the reservoirs Eg. If you are in say a 737-300 and you notice to System B hydraulic quantitydrop to 64%, then from the table above, you may suspect a leak in th… See more

It should go without saying that if a hydraulic system is low on quantity then you should top up that system with fresh fluid (and find out why it was low!) to avoid cross contamination. However if you really want to mo… See more