Egr Valve; Egr Cooler - Kubota L3540 Workshop Manual

L3540, L4240, L5040, L5240, L5740, WSM

[1] EGR VALVE

[2] EGR COOLER

When the temperature of coolant rises above 65 °C
(149 °F), the thermo valve (1) opens and boost pressure
(B) flows to EGR valve.
This boost pressure (B) pushes down EGR valve's
diaphragm (5), and opens valve (16). Then exhaust gas
cooled by EGR cooler returns to the intake manifold.
(1) Thermo Valve
(2) Diaphragm Cover
(3) Retainer
(4) Diaphragm Plate
(5) Diaphragm
(6) Diaphragm Stay
(7) Valve Spring
(8) Diaphragm Plate
(9) Plate
(10) Plate
(11) Insulator
(12) Valve Shaft Bush
(13) Filter
The EGR cooler (1) is placed between the exhaust
manifold (2) and the intake manifold of the engine and
returns the cooled exhaust gas to the engine suction
side.
The EGR cooler (1) has resistance to clogging up,
compact and efficient tubes (3) internally.
(1) EGR Cooler
(2) Exhaust Manifold
(3) Tubes
(4) Coolant Passage
1-M3
ENGINE
(14) Shaft
(15) Sheet
(16) Valve
(17) Housing
A : Boost Pressure (from
Boost Compensator /
Intake Manifold)
B : Boost Pressure (from
Thermo Valve)
C : Cooled EGR Gas (from
EGR Gas)
D : Cooled EGR Gas (to Intake
Manifold)
W1013485
A : Coolant Outlet Port
B : Coolant Inlet Port
W1014264
KiSC issued 04, 2010 A