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The jet pump is fixed on the fuel hoses near the frame right
side member.
High pressure fuel pump (HPfP) 11
(Fig. 9.16).
Maintenance, adjustment, inspection and repair of HPFP
and injectors are recommended to be carried out at BOSCH
service centres. Independent adjustment, partial or complete
disassembling of the HPFP is not permitted.
WARNING!
HPFP lubricant contacting parts is carried out by
fuel, so do not fully work out from the fuel supply system as it will
result in HPFP damage.
Accelerator pedal drive.
ECO 4 motor vehicles are equipped
with electronic module of Accelerator pedal. Accelerator pedal is
made of plastic. Full pedal stroke equals 48,7 mm and is ensured
with stable design and is not regulated.
Air filter.
For filter maintenance see engine ZMZ-40905
section.
exhaust gas recirculation system
Exhaust gas recirculation system (Fig. 9.18) reduces toxic
nitrogen oxides exhaust gases emission by partially feeding exhaust
gases from exhaust manifold to engine cylinders.
The System operation is controlled by microprocessor based
control unit relying on coolant temperature sensors, mass air
consumption, crankshaft rpm indications and memory recorded
data.
WARNING!
Do not operate engine at disconnected and non-
tight exhaust gas recirculation valve and brakes booster vacuum
hoses. Failure to comply will lead to crankcase pressure rise and
increased burnt oil consumption.
Turbocharger
Engine operation without air cleaner at turbocharger (TCR)
inlet is not permitted.
To avoid engine failure, it is strictly prohibited to adjust the
TCR bleed valve.
Turbocharger system maintenance consists of regular air
supply system couplings hermeticity check.
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