MGB LUBRICATION
The MGB is lubricated by an oil system where all oil ducts are contained
inside the MGB casing to avoid the possibility of oil leaks.
The lubricating system comprises two hydraulic pumps, check valves, a
filter, an oil cooler and a fan which sends fresh air through the oil cooler. The
lower part of the MGB case acts as a tank for the lubricating oil: in fact the
lubrication pumps suck the oil from the sump and deliver it to the distribution
system. The distribution of the lubricating oil is achieved by a series of
calibrated nozzles (jets).
The outlet pressure of each pump is limited by a pressure relief valves that
return the excess of oil to the oil sump. After the pressure relief valves the oil
passes through a check valve and then to the oil filter.
The filter includes a by-pass and an impending bypass switch. The filter
element will be bypassed if the pressure drop across the filter reaches a
preset value.
An oil level sight glass is located in front of the MGB.
An oil low level sensor permits to have a caution message related to the oil
level condition.
No indications are displayed in case of pump failure.
OIL LOW LEVEL SENSOR
The oil low level sensor is an optical sensor type which gives a signal to
MAU 1 and MAU 2 when the oil level in the sump is less the minimum level.