Yacht Manual DEHLER 34
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4. Description of inboard systems
4.1 Engine installation
The Dehler 34 is equipped with a Volvo engine installation and Saildrive. The system is
economically mounted to turn through 180 degrees. The table shows you the most important
data. At the same time we would like to refer you to the extensive information provided by
Volvo. As skipper, you must be familiar with the safety and maintenance indications.
Manufacturer Volvo Volvo
Type 1D-20 D1-30
Number of cylinders 3 3
Cylinder capacity 760 cm
3
1130 cm
3
Rated power 13,2 kW / 19 PS 20,9 kW / 29,0 PS
rpm 3.200 U/min 3.200 U/min
Cooling Fresh water cooling with
heat exchanger
Reduction ratio 2,19: 1 2,19: 1
Saildrive gearbox 130 S 130 S
Dry weight ca. 144 kg ca. 158 kg
Three phase current generator
12 V 115A 12 V 115 A
Folding screw 16 x 11" 17 x 12"
According to the manufacturer there may be slight
differences in pitch and diameter
As regards the installation the engine compartment is insulated on partition bulkheads. The
engine is accessible through the bulkhead in the stern cabin. In addition you can open a flap
hatch in the shower room and in the rear cabin to get access to all the important components
of the engine. Oil dipstick is able to be controllrd though maintenance hatch in portside stern
cabine.
4.1.1 Exhaust system
The yacht is equipped with a wet exhaust system, i.e. cooling seawater is injected into the
exhaust outlet pipe, which cools the exhaust fumes. This mixture is taken downwards to a
silencer/water collector – mounted under the double berth. The pipe continues on towards the
stern and forms a swan’s neck in front of the port inner edge of the transom.
The exhaust pipe is made of synthetic rubber reinforced with a steel spiral. The pipe is heat-
resistant, although with certain limits. Do not interrupt the sea water supply. Attention must
be paid therefore to providing a continuous supply. The pipe is fixed at all connection points
with two clamps.
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