Yanmar 3JH4E Service Manual page 106

4. Disassembly and Reassembly
(25) Mounting the intake manifold
Thoroughly clean the inside of the intake manifold, and mount the gasket packing and intake manifold.
(26) Mounting the fuel injection pipe and fuel
return pipe
1) Mount the fuel injection pipe and then assemble
the fuel injection pipe retainer to prevent the pipe
vibration.
NOTE:
Lightly tighten the pipe joint nuts on both ends of
the fuel injection pipe. Completely tighten after
adjusting the injection timing.
Standard tightening torque
fuel injection pipe joint nut
2) Mount the fuel return pipe with the clamp (fuel
injection nozzle-fuel filter).
(27) Mounting the lube oil cooler and the lube oil
filter.
1) Mount the filter bracket and gasket on the cylinder
block.
2) Mount the lube oil cooler to the filter bracket and
tighten the lube oil cooler nut.
3) Mount the fresh water pipes (cylinder block-lube oil
cooler, lube oil cooler-fresh water pump)
4) Mount the lube oil filter with the tool of the filter
case remover.
(28) Mounting the seawater pump
1) Mount the seawater pump assembly and gasket to
the gear case.
2) Lightly tap the gear case side bearing rest with a
wood hammer, and tighten the bolts.
(29) Mounting the heal exchanger (exhaust manifold, fresh water tank unit).
Mount the gasket and heal exchanger (exhaust manifold).
N•m (kgf•m)
29.4-34.4 (3.00-3.51)
90
No.1
No.2 Fuel injection pipe
No.3
Fuel injection
pipe retainer
Fuel injection
nozzle
Fuel injection pump
Cylinder block
Joint
Clamp
Filter bracket
Gasket
Drain cock
Clamp
Bolt
Clamp
Lube oil cooler
Lube oil cooler nut
Lube oil filter
(Lube oil filter and cooler)
Clamp
No.1
No.2
No.3
Fuel return pipe
To fresh
water pump