Engine SGR
B737-700/800/900 Engine
Engine Oil System
Oil from the individual engine tank is circulated under pressure, through the
engine to lubricate the engine bearings and accessory gearbox. The oil quantity
indicator, oil temperature indicator, oil pressure indicator and LOW OIL
PRESSURE alert are all located on the display unit.
The oil system is pressurized by the engine driven oil pump. Oil from the pump
goes to the engine bearings and gearbox. Sensors for the oil temperature
indicator, oil pressure indicator and LOW OIL PRESSURE alert are located
downstream of the oil pump prior to engine lubrication.
Oil is returned to the oil tank by engine driven scavenge pumps. From the
scavenge pumps oil passes through a scavenge filter. If the filter becomes
saturated with contaminants, oil automatically bypasses the filter. Prior to the oil
bypassing the scavenge filter, the OIL FILTER BYPASS alert illuminates on the
upper display unit.
Prior to returning to the oil tank, the oil passes through the main engine oil cooler
where it is cooled by engine fuel to maintain proper oil temperature.
Oil from the individual engine tank is circulated under pressure, through the
engine to lubricate the engine bearings and accessory gearbox. The oil quantity
indicator, oil temperature indicator, oil pressure indicator and LOW OIL
PRESSURE alert are all located on the display unit.
The oil system is pressurized by the engine driven oil pump. Oil from the pump
goes to the engine bearings and gearbox. Sensors for the oil temperature
indicator, oil pressure indicator and LOW OIL PRESSURE alert are located
downstream of the oil pump prior to engine lubrication.
Oil is returned to the oil tank by engine driven scavenge pumps. From the
scavenge pumps oil passes through a scavenge filter. If the filter becomes
saturated with contaminants, oil automatically bypasses the filter. Prior to the oil
bypassing the scavenge filter, the OIL FILTER BYPASS alert illuminates on the
upper display unit.
Prior to returning to the oil tank, the oil passes through the main engine oil cooler
where it is cooled by engine fuel to maintain proper oil temperature.
Engine Fuel System
