T B M
PILOT’S INFORMATION MANUAL 700
SECTION 7
DESCRIPTION
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Page 7.6.12
Rev. 5
EXHAUST SYSTEM
Exhaust gases are evacuated through exhaust nozzles located on sides of
engine cowlings.
ENGINE ACCESSORIES
All engine driven accessories [except power turbine tacho–generator (Np)
and propeller governor] are installed on accessory gearbox located
rearwards of engine.
Oil pump
Oil pump is a self–controlled gear pump located at the bottom of oil casing.
Fuel high pressure pump (HP)
Fuel high pressure pump is installed on accessory gearbox. It supplies fuel
nozzles, flow being controlled by fuel regulator (FCU). Fuel provided by
engine driven main pump (mechanical) enters high pressure pump through a
filter, then it is discharged under pressure into fuel regulator (FCU) through a
second filter. In case of contamination of this second filter, a by–pass valve
allows fuel to go directly from high pressure pump to the regulator.
Compressor turbine tacho–generator (Ng)
Compressor turbine tacho–generator (Ng) is attached on accessory
gearbox. It supplies a voltage which feeds gas generator speed indicator.
Power turbine tacho–generator (Np)
Power turbine tacho–generator is attached on the right side of the reduction
gearbox. It supplies a voltage which feeds propeller speed indicator.
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