E
AST
C
HINA
S
HIPBUILDING
I
NSTITUTE
F
ACTORY
8
SIYANG
四洋
R
Fuel
tank
Fig Piping layout
1.Cooling water pump 2.Lube cooler 3. Keel cooler 4.Lube oil pump 5.Lube oil filter 6.Pressure
control valve 7.Main bearing 8.Camshaft bearing 9.Rocker arm 10 Overflow pipe11. Fuel oil filter
12.Fuel feed pump 13. Fuel injection pump 14. Fuel high pressure pipe 15. Fuel injection nozzle 16.
Water exhaust pipe 17. Fuel oil inle
t
4.4 ELECTRIC SYSTEM.
The electric system is composed of battery charging alternator,
starting motor, relay regulator, switch, alarm buzzer, alarm lamps and
instruments.
If without FQ spring starter, two separated charging battery should be
need. The customers choose and use either one of two electric diagrams.
Voltage: 12V.
Starter motor: 2.5kw
Alternator: 750W
4.5 GEARBOX
Gearbox reduction ratio for SCG 025-3: …....2.74/2.67 (Forward/reverse)
Gearbox reduction ratio for ZF12M: …...........2.63/1.95 (Forward/reverse)
Rotation direction of propeller …………….. Clockwise (forward)
