Additional Reservoir Components. Many reservoirs, as shown in Figure 1-1, are constructed with
baffles or fins to keep the fluid from swirling and foaming. Foaming can cause air to become entrained
in the system.
Filters are incorporated in some reservoirs to filter the fluid before it leaves the reservoir.
A bypass valve is used to ensure that the pump does not starve if the filter becomes clogged.
A standpipe is used in a reservoir which supplies a normal and an emergency system. The main
system draws its fluid from the standpipe, which is located at a higher elevation. This ensures an
adequate fluid supply to the secondary system if the main system fails.
Figure 1-2. Hydraulic Reservoir Pressurized With Hydraulic Fluid.
Contamination of hydraulic fluid is one of the common causes of hydraulic system troubles. Installing
filter units in the pressure and return lines of a hydraulic system allows