Yanmar 4JH45 Operation Manual page 111

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1 – Fuel overflow
2 – * 7 x t4.5 Rubber hose
3 – Fuel inlet
4 – Fuel oil pre-filter
5 – * 7 x t4.5 Rubber hose
6 – Fuel filter (cartridge type)
7 – * 7.5 x t3 Rubber hose
8 – * 9.5 x t3.5 Rubber hose
9 – * 9.5 x t3.5 Rubber hose
10 – * 10 x t1.2 Steel pipe
11 – * 7.5 x t3 Rubber hose
12 – Fuel supply pump
13 – Common rail
14 – Fuel high-pressure pipe 6.35 x
t1.675 Steel pipe
15 – Lubricating oil filter
(cartridge type)
16 – Lubricating oil cooler
17 – Fuel return pipe
18 – 9 x t3.5 Rubber hose
19 – Oil pressure switch
20 – Oil pressure sensor (option)
21 – Fuel injection nozzle
22 – Mixing elbow
23 – 25.4 x t4.3 Rubber hose
24 – Heat exchanger
25 – Main bearing
26 – Lubrication oil inlet strainner
27 – Seawater inlet
28 – 25.4 x t4.3 Rubber hose
29 – Cooling water pump (seawater)
30 – 28 x t4 Rubber hose
31 – 28 x t4 Rubber hose
32 – Hot water connection outlet
33 – Coolant temperature sensor
34 – To Camshaft
35 – Thermostat
36 – From Cylinderhead
37 – To Cylinderblock
38 – Cooling Water Pump (coolant)
39 – Hot water connection return
40 – Lubrication oil pump
41 – Lubrication oil pressure
control valve
42 – 9 x t3.5 Rubber hose
JH Series Operation Manual
SYSTEM DIAGRAMS
105