Yanmar 4JH4-TE Service Manual

9. Coolant system
276
9.5.7 Mounting the coolant recovery
tank
(1) The coolant recovery tank is mounted at
approximately the same height as the
heat exchanger (fresh water tank).
(allowable difference in height : 300 mm
(11.8110 in.) or less)
(2) The overflow pipe should be less than
1000 mm (39.3701 in) long, and
mounted so that it does not sag or bend.
Note:
Make sure that the overflow pipe of the coolant
recovery tank is not submerged in bilge. If the
overflow pipe is submerged in bilge, water in the
bilge will be siphoned into the fresh water tank
when the wafer is being cooled.
9.5.8 Precautions on usage of the
coolant recovery tank
(1) Check the coolant recovery tank when
the engine is cool and refill with fresh
water as necessary to bring the water
level between the low and full marks.
(2) Check the overflow pipe and replace if
bent or cracked. Clean out the pipe if it
is clogged up.
Overflow tube
Sub tank
Mounting plate
001590-01E

Yanmar 4JH4-TE Specifications

General

Number of Cylinders	4
Aspiration	Turbocharged
Fuel System	Direct injection
Alternator	12V - 80A
Cooling System	Fresh water cooling with heat exchanger
Engine Type	4-stroke, water-cooled diesel engine
Rated Output	55 kW (75 mhp) at 3200 rpm
Starting System	Electric starting
Lubrication System	Forced lubrication with gear pump