95
FINE FUEL FILTER
The engines are equipped with a fine fuel filter
1
installed on
the filter housing with its cap down (Fig. 31). The housing with the
filter is mounted on the left side of the cylinder block.
The replaceable filter (2 pcs.) is designed as a single-piece
shell with a metal housing.
To install the filter, screw it manually as far as it will go onto
the central threaded pipe union for the clean fuel outlet which is
screwed into the filter housing (see “Maintenance” section of this
Manual). The connection is sealed by the outer rubber ring of the
replaceable filter.
The transmitter installed on the filter housing in the clean fuel
channel serves to measure the fuel pressure and temperature in the
low-pressure line of the engine microprocessor control system.
HIGH-PRESSURE FUEL PUMP
The engines use a high-pressure fuel pump with a built-in
priming pump.
The pump has three HP sections (Fig. 33); each section is fed
through a dosage device with an electric valve. The sections are
located in the same plane and driven by the same cam on the pump
shaft. The maximum fuel pressure in the high-pressure line developed
by the pump is 1800 kgf/cm
2
.
The inside parts of the pump including the shaft slide bearings
are lubricated with fuel. For this reason on the pump shaft drive end
there are two sealing collars with a gap between them. In the gap area
there is a drain hole leading to the engine outside. Fuel coming out of
the drain hole is a sign of the pump side collar failure, whereas
presence of oil indicates failure of the engine side collar.
Summary of Contents for YMZ-536
Page 14: ...14 Fig 1 YMZ 536 engine right side view ...
Page 15: ...15 Fig 1 a YMZ 536 engine left side view ...
Page 16: ...16 Fig 1 b YMZ 536 10 engine right side view ...
Page 17: ...17 Fig 1 c YMZ 536 10 engine left side view ...
Page 18: ...18 Fig 1 d YMZ 536 30 engine right side view ...
Page 19: ...19 Fig 1 e YMZ 536 30 engine left side view ...
Page 20: ...20 Fig 1 f YMZ 5362 engine right side view ...
Page 21: ...21 Fig 1 g YMZ 5362 engine left side view ...
Page 22: ...22 Fig 1 h YMZ 53602 engine right side view ...
Page 23: ...23 Fig 1 i YMZ 53602 engine left side view ...
Page 51: ...51 Fig 10 Longitudinal section ...
Page 52: ...52 This page intentionally left blank ...
Page 96: ...96 Fig 33 High pressure fuel pump ...
Page 99: ...99 Fig 35 Injector control The injector installation in the cylinder head is shown in Fig 36 ...
Page 168: ...168 NOTES ...