Volvo TAMD75P User manual

OPERATOR’S MANUAL
TAMD74C/L, TAMD75P

CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
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Welcome aboard
Volvo Penta marine engines are used all over the world today. They are used in all
possible operating conditions for professional as well as leisure purposes. That’s not
surprising.
After more than 90 years as an engine manufacturer and after delivering over
500,000 marine engines, the Volvo Penta name has become a symbol of reliability,
technical innovation, top of the range performance and long service life. We also be-
lieve that this is what you demand and expect of your Volvo Penta engine.
We would like you to read this Operator’s Manual thoroughly and consider the advice
we give on running and maintenance before you cast off on your maiden voyage so
that you will be ensured of fulfilling your expectations.
With warm regards
AB VOLVO PENTA
IMPORTANT! These instructions do not contain descriptions of controls or
operation for boats with waterjet. If your boat is equipped with Volvo Penta
waterjet, this information can be found in the Operator’s Manual that came
with the waterjet.

2
Safety Information ............................................. 3–7
General ...................................................................3
Boat travel ..............................................................4
Maintenance and service ........................................ 6
Introduction...................................................... 8–10
Running-in.............................................................. 8
Fuel and oil types................................................... 8
Certificated engines ............................................... 9
Warranty and Guarantee information ...................... 9
Identification numbers ........................................... 11
Presentation .................................................... 12–14
Technical Description............................................ 12
What is EDC ......................................................... 13
Orientation ............................................................ 14
Instrumentation ............................................... 15–19
Instrument panels ................................................. 15
Control panels ....................................................... 16
Warning displays................................................... 16
Starting switch ...................................................... 17
Control panels (EDC) ...................................... 18–19
Controls ........................................................... 20–21
Single lever control ............................................... 20
Dual lever control .................................................. 21
Starting the engine.......................................... 22–24
Before starting ...................................................... 22
General about starting ........................................... 22
Starting procedure................................................. 23
Operation ......................................................... 25–29
Check the instruments .......................................... 25
Diagnostic information........................................... 26
Cruising speed ...................................................... 26
Synchronizing engine speed ................................. 27
Changing control position ...................................... 27
Manoeuvering ....................................................... 28
Emergency shifting ............................................... 29
Forced propeller rotation........................................ 29
Accessories .......................................................... 29
Stopping the engine ....................................... 30–31
Stopping ............................................................... 30
Cold weather precautions ...................................... 31
Laying up .............................................................. 31
Maintenance schedule .................................... 32–34
Maintenance .................................................... 35–61
Engine, general ..................................................... 35
Lubricating system................................................ 38
Lubricating oils ...................................................... 38
Freshwater system ............................................... 41
Coolant ................................................................. 41
Seawater system .................................................. 46
Fuel system.......................................................... 50
Fuel specification .................................................. 50
Electrical system .................................................. 54
Electrical components diagram ............................. 59
Reverse gear ........................................................ 60
Inhibiting ......................................................... 62–63
Inhibiting ............................................................... 62
Taking out of storage ............................................63
Troubleshooting.............................................. 64–70
Symptom and possible cause ............................... 64
Start with auxiliary batteries .................................. 65
Emergency shifting ............................................... 66
Diagnostic function......................................... 68–74
Diagnostic function ............................................... 68
Reading diagnostic trouble codes.......................... 69
Erasing diagnostic trouble codes .......................... 70
Diagnostic trouble codes....................................... 71
Technical Data................................................. 75–76
Engine ................................................................. 75
Reverse gear ....................................................... 76
Contents
© 2005 AB VOLVO PENTA
All rights to changes or modifications reserved.
Printed on environmentally friendly paper.
(Cover: Department of transport (shipping), license 9809095)

3
Safety Information
Read this chapter carefully. It concerns your safety. This section describes how safety information is presented
in the Operator’s Manual and on the engine. It also gives a general account of basic safety precautions to be tak-
en when operating the boat and maintaining the engine.
Check that you have the correct Operator’s Manual before you read on. If this is not the case please
contact your Volvo Penta dealer.
If operations are performed incorrectly it could result in personal injury, or damage to property or
the engine. Read the Operator’s Manual carefully before operating or servicing the engine. If
anything is unclear please contact your Volvo Penta dealer for assistance.
This symbol is used in the book and on the engine to make you aware of safety information.
Always read these safety precautions very carefully.
In the Operator’s Manual warning texts have the following priority:
WARNING! If these instructions are not followed there is a danger of personal injury, exten-
sive damage to the product or serious mechanical malfunction.
IMPORTANT! Used to draw your attention to something that can cause damage, product
malfunction or damage to property.
NOTE! Used to draw your attention to important information that will facilitate work or opera-
tions.
This symbol is used in certain cases on our products and refers to important information in
the Operator’s Manual. Ensure that warning and information symbols on the engine and trans-
mission are always visible and legible. Replace symbols that have been damaged or painted
over.

4
Safety information
Safety regulations for boat trips
The new boat
Read operator’s manuals and other information ac-
companying the new boat thoroughly. Accustom
yourself with handling the engine, controls and other
equipment in a safe and correct manner.
If this is your first boat or if it is a type you are not
used to, we recommend practising manoeuvreing the
boat in a peaceful environment. Learn the sea-going
and manoeuvering characteristics at different speeds
and in varying weather and load conditions before
casting off on your “real” maiden voyage.
Remember that when operating a boat, you have a
legal responsibility to be aware of and follow regula-
tions concerning traffic and safety at sea. Inform
yourself of the regulations that apply to you and your
waters by getting in touch with the relevant authorities
or marine safety organization.
Attending some kind of boat handling course is a
good idea. We recommend getting in touch with a re-
gional boat or marine safety organization to help you
locate a suitable course.
Accidents and other incidents
Sea rescue statistics show that deficient maintenance
of boats and engines together with defective safety
equipment often causes accidents and other incidents
at sea.
Make sure your boat and engine are maintained in
accordance with directions in the operator’s manuals
and that the safety equipment on board is in good
working order.
Daily inspection
Make a habit of visually inspecting the engine and en-
gine room before starting (before starting the en-
gine) and after stopping (when the engine has been
turned off). This will help you to quickly detect any
fuel, coolant or oil leaks and any other abnormalities
that have occurred or are about to occur.
Manoeuvering
Avoid violent and rapid rudder movement and gear
shifting. There is a risk of the passengers falling down
or falling overboard.
A rotating propeller can cause serious injury. Make
sure there is nobody in the water before engaging for-
ward/reverse. Never run close to bathers or in places
where you have reason to believe there are people in
the water.
Filling fuel
There is a risk of fire and explosion when filling fuel.
Smoking is prohibited and the engine must be turned
off.
Never overfill the tank. Close the filler cap securely.
Use only fuel recommended in the Operator’s Manu-
al. The incorrect grade of fuel can disturb operation or
cause breakdown. This can also lead to the control
rod jamming on diesel engines, which will overrev the
engine and risk damaging machinery and causing
personal injury.
Do not start the engine
Do not start or run the engine with a suspected fuel or
LPG leak in the boat, nor when you are close to or in
a discharge of explosive media, etc. There is risk for
fire and/or explosion in explosive surroundings.

5
Safety information
Carbon monoxide poisoning
When a boat is moving forward, it will cause a certain
vacuum to form behind the boat. In unfortunate cir-
cumstances, the suction from this vacuum can be so
great that the exhaust gases from the boat are drawn
into the cockpit or cabin and cause carbon monoxide
poisoning.
This problem is most prevalent on high, wide boats
with abrupt stern. In certain conditions, however, this
suction can be a problem on other boats, e.g. when
running with the cover up. Other factors that can in-
crease the effect of the suction are wind conditions,
load distribution, swells, trim, open hatches and port-
holes, etc.
Most modern boats, however, are designed in such a
way that this problem is very rare. If suction should
arise anyway, do not open hatches or portholes at the
fore of the boat. Surprisingly, this will otherwise in-
crease the suction. Try changing speed, trim or load
distribution instead. Try taking down/opening or in
any other way changing the setup of the cover as
well. Get in touch with your boat dealer for help in ob-
taining the best solution for your boat.
Remember
Safety equipment: life jackets for everyone on board, communication equipment, distress rockets,
approved fire extinguisher, bandages, life buoy, anchor, paddle, torch, etc.
●Spare parts and tools: Impeller, fuel filters, fuses, adhesive tape, hose clips, engine oil, propeller
and tools for tasks it may be necessary to perform.
●Plan your desired route from the charts. Calculate distance and fuel consumption. Listen to
weather reports.
●Inform relations of your planned route for long trips. Remember to inform of changed plans or de-
lays.
●Inform the people on board of where the safety equipment is located and how it works. Make sure
there is more than one person on board that knows how to start and manoeuvre the boat safely.
This list should be supplemented with necessary safety equipment depending on the type of boat,
where and how it is being used, etc. We recommend you get in touch with a regional boat or marine
safety organization to obtain more detailed marine safety information.

6
Safety information
Safety directions for maintenance and service
Preparations
Knowledge
The Operator’s Manual contains directions for per-
forming normal maintenance and service in a safe
and correct manner. Read the directions carefully be-
fore starting work.
More detailed service literature is available from your
Volvo Penta dealer.
Never perform a task unless you are absolutely sure
how it is to be carried out, call your Volvo Penta deal-
er for assistance instead.
Stop the engine
Stop the engine before opening or dismantling the en-
gine hatch/hood. Maintenance and service must be
carried out with the engine stationary unless stated
otherwise in the instructions.
Prevent inadvertent start of the engine by removing
the starter key and turning off the power with the main
switch, locking it in the off position. Place a warning
sign in the driver position stating that service is in
progress.
Working on or approaching a running engine is a
safety hazard. Loose clothing, hair, fingers or a
dropped tool can fasten in rotating parts and cause
serious bodily injury. Volvo Penta recommend leaving
all work requiring the engine to be running to an au-
thorized Volvo Penta service centre.
Lifting the engine
Always use the lifting eyes mounted on the engine (or
reverse gear) when lifting the engine. Always make
sure lifting equipment is in good condition and con-
structed for the lift (engine weight together with possi-
ble reverse gear and extra equipment). Use an ad-
justable lifting boom to ensure safe handling when lift-
ing the engine. All chains and wires must run parallel
with each other and as much at right-angle as possi-
ble to the top of the engine. Note that any extra equip-
ment mounted on the engine can change the centre
of gravity. Special lifting devices may be required to
obtain the right balance and safe handling. Never per-
form service on an engine suspended only from a lift-
ing device.
Before starting
Refit all guards and covers that have been removed
before starting the engine. Make sure there are no
tools or other objects left on the engine.
A turbocharged engine must never be started without
the air filter fitted. The rotating compressor wheel in
the turbocharger can cause severe personal injury.
There is also a risk of foreign objects being drawn in
and causing mechanical damage.
Fire and explosion
Fuel and lubricants
All fuel, most lubricants and many chemicals are
flammable substances. Always read and follow the di-
rections on the packaging.
Work performed on the fuel system must be done on
a cold engine. Fuel leaks and spills on hot surfaces or
electrical components can cause fires.
Keep oil- and fuel-drenched rags and other hazard-
ous materials where they are safe in case of fire. Oil
drenched rags can self-ignite in certain conditions.
Never smoke when refuelling, topping up with oil or
when in the vicinity of the fuel station or engine room.
Non-original parts
Components in fuel, ignition and electrical systems on
Volvo Penta engines are designed and manufactured
to minimize the risk of explosion and fire in compli-
ance with existing legislation.
The use of non-original parts can result in explosion
or fire.
Batteries
Batteries contain and generate oxyhydrogen gas, es-
pecially when charging. Oxyhydrogen is easily ignited
and extremely explosive.
Smoking, naked flames and sparks must never occur
in or close to the batteries or battery compartment.
A faulty battery connection or jumper cable can gen-
erate sparks which can cause the battery to explode.
Start spray
Never use start spray or similar start help. Explosions
can occur in the intake manifold. Risk for personal in-
jury.

7
Safety information
Hot surfaces and fluids
A hot engine always involves risk for burn injuries.
Take care with hot surfaces. E.g.: exhaust manifold,
turbocharger, oil pan, charge air pipe, starting heater,
hot coolant and warm lubricant in pipes and hoses.
Carbon monoxide poisoning
Start the engine in well ventilated spaces only. When
running in confined spaces, the exhaust gases and
crankcase gases must be evacuated.
Chemicals
Most chemicals such as glycol, anti-corrosion agent,
preservatives, degreasing agent, etc., are hazardous
to health. Always read and follow the directions on
the packaging.
Certain chemicals such as preservatives are flamma-
ble and harmful to inhale. Provide good ventilation
and use breathing protection when spraying. Always
read and follow the directions on the packaging.
Store chemicals and other hazardous materials out of
reach of children. Leave left over or used chemicals
to a destruction plant.
Cooling system
There is a risk of water entering when working on the
seawater system. Therefore, stop the engine and
close the sea cock before starting work.
Avoid opening the coolant filler cap when the engine
is warm. Steam or hot coolant may spurt out and
cause burn injuries.
If the filler cap, coolant pipe, cock, etc., must never-
theless be opened or dismantled while the engine is
warm, the filler cap must be opened carefully to re-
lease the pressure before removing it completely and
starting work. Note that the coolant can still be hot
and cause burn injuries.
Lubricating system
Hot oil can cause burn injuries. Avoid skin contact
with warm oil. Make sure the lubricating system is de-
pressurized before starting work. Never start or run
the engine with the oil filler cap removed or there will
be a risk of the oil being thrown out.
Fuel system
Always protect your hands when carrying out leak de-
tection. Escaping fluids under pressure can pierce
bodily tissue and cause serious injury. Risk of blood
poisoning.
Always cover the alternator if it is located under the
fuel filters. Fuel spills can damage the alternator.
Electrical system
Turn off the power
Before starting work on the electrical system, the en-
gine must be stopped and the powered turned off with
the main switch/switches. Shore power to the engine
heater, battery charger or other extra equipment fitted
to the engine must be disconnected.
Batteries
Batteries contain a highly corrosive electrolyte. Pro-
tect your eyes, skin and clothing when charging and
handing batteries. Always use protective goggles and
gloves.
In case of splashes on the skin, wash with soap and
plenty of water. In case of splashes in the eyes, rinse
immediately with plenty of water and call a doctor.

8
Introduction
The Operator’s Manual has been produced to give you the greatest benefit of your Volvo Penta marine engine. It
contains the information necessary to handle and maintain your engine in a safe and correct manner. We would
like you to read this Operator’s Manual thoroughly and learn how to handle the engine, controls and other equip-
ment in a safe manner before casting off for your maiden voyage.
Keep the Operator’s Manual handy at all times. Keep it safe and do not forget to hand it over to the new owner if
you ever sell your boat.
Care of the environment
We would all like to live in a clean and healthy envi-
ronment. Somewhere where we can breathe clean
air, see healthy trees, have clean water in our lakes
and oceans, and are able to enjoy the sunshine with-
out being worried about our health. Unfortunately, this
cannot be taken for granted nowadays but is some-
thing we must work together to achieve.
As a manufacturer of marine engines, Volvo Penta
has a special responsibility, why care of the environ-
ment is a core value in our product development. To-
day, Volvo Penta has a broad range of engines where
progress has been made in reducing exhaust emis-
sions, fuel consumption, engine noise, etc.
We hope you will take care in preserving these quali-
ties. Always follow any advice given in the Operator’s
Manual concerning fuel grades, operation and main-
tenance and you will avoid causing unnecessary in-
terference to the environment. Get in touch with your
Volvo Penta dealer if you notice any changes such as
increased fuel consumption exhaust smoke.
Adapt speed and distance to avoid wash and noise
disturbing or injuring animal life, moored boats, jetties,
etc. Leave islands and harbors in the same condition
as you want to find them. Remember to always leave
hazardous waste such as waste oil, coolant, paint
and wash residue, flat batteries, etc., for disposal at a
destruction plant.
Our joint efforts will make a valuable contribution to
our environment.
Running in
The engine must be “run in” during the first 10 hours
of operation as follows:
Run the engine under normal operation. Do not run it
at full power except for short periods. Never run the
engine for long periods at constant rpm during this
time.
Higher oil consumption is normal during the running in
period. Therefore, check the oil level more often than
recommended.
The prescribed warranty inspection “First Service In-
spection” must be carried out during this first period of
operation. For more information: See Warranty and
Service Book.
Fuel and oil
Use only fuel and oil grades as recommended in the
Operator’s Manual. Other grades can cause opera-
tional problems, increase fuel consumption and have
long-range effects on engine service life.
Always change oil, oil filter and fuel filter according to
prescribed intervals.
Service and spare parts
Volvo Penta marine engines are designed for high
operational reliability and long service life. They are
constructed to withstand the marine environment
while also affecting it as little as possible. Through
regular service and the use of Volvo Penta original
spare parts, these qualities will be retained.
The worldwide Volvo Penta network of authorized
dealers is at your service. They are specialists in Vol-
vo Penta products and stock accessories, original
spare parts, test equipment and the special tools re-
quired to perform high-quality service and repairs.
Always follow the maintenance intervals specified in
the Operator’s Manual and remember to specify the
engine/transmission number when ordering service
and spare parts.

9
Introduction
Certified engines
It is essential that owners and operators of emission
certified engines are aware of the following points:
A certification involves the engine type being
checked and approved by applicable authorities. En-
gine manufacturers guarantee that all engines of the
same type correspond with the certified engine.
This puts special demands on the maintenance
and service of your engine:
●Maintenance and service intervals recommended
by Volvo Penta must be followed.
●Only Volvo Penta original spare parts may be
used.
●Service of injection pumps, pump settings and in-
jectors must always be performed at an autho-
rized Volvo Penta workshop.
●The engine must not be modified in any way with
the exception of accessories and service kits ap-
proved by Volvo Penta for use on the engine.
●Installation modifications must not be made to the
engine exhaust pipe or inlet channels.
●Any sealed sections must not be broken by any-
one other than authorized personnel.
Otherwise, the general directions concerning running,
care and maintenance given in the Operator’s Manu-
al apply.
IMPORTANT! Neglected or deficient mainte-
nance/service and the use of non-original spare
parts will entail Volvo Penta renouncing any re-
sponsibility for the engine corresponding to the
certified version. Volvo Penta will not compen-
sate for damage and/or costs arising from the
above.
Warranty
Your new Volvo Penta marine engine is covered by a limited warranty complying with the conditions
and instructions given in the Warranty and Service Book.
Note that AB Volvo Penta’s responsibility is limited to what is specified in the Warranty and Service
Book. Read it carefully as soon as possible after delivery. It contains important information concerning
the warranty card, service, maintenance and what the owner is responsible to be aware of, check and
perform. Warranty liability will otherwise be declined completely or fully by AB Volvo Penta.
Get in touch with your Volvo Penta dealer if you have not received a Warranty and Service Book
or a copy of the warranty card.

10
Declaration of Conformity for Recreational Craft Propulsion Engines with the exhaust
emission requirements of Directive 94/25/EC as amended by 2003/44/EC
This declaration of conformity is issued under the sole responsibility of the manufacturer. I declare on behalf of the engine
manufacturer that the engine(s) mentioned above complie(s) with all applicable essential requirements in the way specified and is
in conformity with the type for which above mentioned EC type examination certificate(s) has been issued.
Essential requirements
Annex I.B – Exhaust Emissions
Engine identification
Exhaust emission requirements
Durability
Operator’s manual
EMC Directive
Standards Used
Volvo Penta std
EN ISO 8178-1:1996
Volvo Penta std
ISO 10240:2004
EN 61000-3-2,
EN 61000-3-3,
CISPR 25
Other normative
document used
Annex 1.B.1
Annex 1.B.2
Annex 1.B.3
Annex 1.B.4
TAMD75P
Module used for exhaust emission assessment ..... B, ECType Examination acc to Annex VII
Other Community Directives applied ....................... EMC 89/336/EEC
Engine manufacturer:
ABVolvo Penta
Gropegårdsgatan
SE-405 08 Göteborg
Sweden
Body for exhaust emission assessment:
International Marine Certification Institute
Rue Abbé Cuypres 3
B-1040 Bruxells
Belgium
ID Number: 0609
Description of engine(s) and essential requirements
EngineType............................................................... 4 stroke diesel engine
Engine model(s) covered by this declaration ECType certificate number
TAMD75P ................................................................... EXVOL002
PL-73/05
Issue: 02
Name and function: Sam Behrmann, Product Liability
(identification of the person empowered to sign on behalf of the
engine manufacturer or his authorised representative)
Signature and title:
(or an equivalent marking)
Dateand placeof issue:(yr/month/day) 2005/11/21 Göteborg

11
Introduction
Identification numbers
Type plates with identification numbers can be found on the engine and transmission. This information must al-
ways be used as a reference when ordering service and spare parts. Similar plates can probably be found on
your boat and its equipment. Make a note of the information in the space below and make a copy of this page so
the information is available even if the boat should be stolen.
The appearance and location of the type plates is shown below. The numbers in brackets refer to the location of
the identification number on the type plate.
Engine
Product designation (1) .............................................
Engine serial number (2) ...........................................
Product number (3)....................................................
Rated power (4) .........................................................
Speed at rated power (5) ...........................................
Prelift/Injection timing (6) ...........................................
Approval number (7) ..................................................
EDC Control Module
“Dataset” (parameter file) (8) .....................................
ECU Batch (9) ...........................................................
Engine plate
TAMD75P-A
RATED POWER: xxx kW
RATED SPEED: xxxx RPM
DATASET: xxx xxx (8)
SPEC. NO: xxx xxxx (3)
ECU BATCH: xxxx (9)
XXXX (12)
XXXXXXXXX (13)
XXX XXX (14)
IMPORTANT ENGINE INFORMATION
AB Volvo Penta, Sweden VP xxxx
(10)
IMO
ENGINE FAMILY xxxx ENGINE MODEL xxxx (1)
TEST CYCLES xxxx POWER (kW/RPM) xxxx
IMO APP NO. MTC xxxx
(11)
IMO APP NO. EPA –
ENGINE SERIAL NO. AVAILABLE ON ENGINE IDENTIFICATION PLATE
CERTIFICATE AND TECHNICAL FILE: AVAILABLE ON WWW.PENTA.VOLVO.SE
THIS ENGINE IS CERTIFIED BY SWEDISH ACCREDITED ORGANISATION MTC
IN ACCORDANCE WITH IMO NOX TECHNICAL CODE ANNEX VI MARPOL 73/78
Engine and transmission label
Certification plate
Decal, EDC Control Module
Reverse gear plate
Certification decal
Certification, IMO
Decal, part No. (10) ...................................................
Approval No. (11) ......................................................
Reverse gear
Product designation (12)............................................
Serial number (13) .....................................................
Product number (14)..................................................

12
Presentation
TAMD74C-B, TAMD74L-B and TAMD75P-A are in-line, direct injection, 6-cylinder, marine diesel engines spe-
cially developed for fast planing and semi-planing craft.
The engines are equipped with electronic fuel control (EDC*), turbocharger, charge air cooler, heat exchanger for
thermostatically controlled fresh water cooling and electronic engine speed control and shifting.
The exhaust manifold and turbocharger are freshwater cooled to reduce heat radiation to the engine room.
Technical description
Engine and cylinder block
– The cylinder block and cylinder heads are manu-
factured of alloyed cast iron
– Two cylinder heads
– Replaceable wet cylinder liners
– Replaceable valve seats and valve guides
– Crankshaft carried on seven bearings
– Oil-cooled forged aluminum pistons
– Three piston rings, upper of keystone type
Lubrication system
– Freshwater-cooled oil cooler
– Gear driven oil pump
– Side-mounted full-flow and by-pass filter of spin-
on type
– Oil dipsticks on both sides of oil sump
Fuel system
– Fuel injection pump incl. fuel feed pump and elec-
tronically controlled actuator
– Electronically controlled central processing system
(EDC)
– Six-hole injectors
– Twin fine fuel filters of spin-on type
Turbocharger
– Freshwater-cooled turbocharger with wastegate
Cooling system
– Tubular heat exchanger with integrated expansion
tank or 2-circuit keel cooing
– Seawater-cooled tubular charge air cooler
– Gear-driven seawater pump
Electrical system
– 12V or 24V electrical system incl. alternator (60A)
with charging sensor
– Rubber suspended electrical terminal box with
semi-automatic fuses
* EDC (Electronic Diesel Control), see description in next section.

13
Presentation
What is EDC
EDC stands for Electronic Diesel Control. It is an electronic system for marine diesel engine control. The system
has been developed by Volvo Penta and covers fuel control, diagnostic function and electronic engine speed
control and shifting.
The processor
The brain of the EDC system, the processor, is en-
cased in the control module and protected against
moisture and vibration.
The processor continuously receives information
about fuel supply, engine speed, charge air pressure,
engine temperature and driver commands etc., via a
number of sensors and senders.
The information provides an exact picture of the pre-
vailing operating conditions. This makes it possible for
the processor to calculate the correct fuel volume,
check the engine condition and prevent irritating stall-
ing during backward and forward manoeuvering etc.
Fuel control
The engine fuel requirement is analyzed up to a 100
times per second. If necessary the fuel supply is ad-
justed by the electronic actuator in the fuel injection
pump.
This ensures that the engine always receives the cor-
rect volume of fuel in all operating conditions. This
means lower fuel consumption and minimal exhaust
emissions.
Diagnostic function
The task of the diagnostic function is to discover and
localize any disturbances within the EDC system, to
protect the engine and to ensure operation in event of
serious disturbances.
If a disturbance is found the diagnostic button indica-
tor in the control panel begins to flash. By pressing
the diagnostic button the operator will receive a diag-
nostic trouble code (DTC) as a guide for any fault-
tracing.
Engine speed control and shifting
The operating command is transferred to the elec-
tronic actuator in the fuel injection pump, the electron-
ic valves in the reverse gear or to the gearshift control
actuator for drive, using a potentiometer in the operat-
ing control.
The result is fast accurate throttle response and
smooth shifts.
Changing is further protected by the processor which
prevents shifting at too high engine speeds which
may cause damage to the transmission.
1. Control Module
2. Electronic actuator
3. Control panel
4. Solenoid valves
5. Potentiometer
For the location of other electrical components: See the
chapter “Maintenance. Electrical components diagram”.
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14
Presentation
Orientation
TAMD74C-B, TAMD74L-B, TAMD75P-A
1. Fuel filters
2. EDC control module
3. Oil filler cap
4. Coolant filler cap
5. Injection pump
6. Distribution box with semi-automatic
fuses
7. Turbocharger
8. Water cooled exhaust pipe elbow
(option)
9. Wastegate valve
10. Oil dipstick, engine
11. Oil cooler, engine
12. Circulation pump
TAMD74C-B*, TAMD74L-B*, TAMD75P-A
1. Filters for crankcase ventilation
2. Air Cleaner (ACL)
3. Charge air cooler (CAC)
4. Heat exchanger
5. Expansion tank
6. Alternator
7. Seawater pump
8. By-pass filter for lubricating oil
9. Lubricating oil filter
10. Oil sump
11. Oil dipstick, engine
12. Starter motor
* Note. The illustration shows TAMD75P.
However, both TAMD74C and TAMD74L agree in
apperance.
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15
Instrumentation
This chapter describes the Volvo Penta instruments that are available for your engine. Note that tachometer, oil
gauge, temperature gauge, charge gauge, starting switch, etc., that are shown here as panel mounted may be
mounted separately in some boats.
If your boat is fitted with instruments not described here and you are not sure of their function, please get in touch
with your boat dealer.
Instrument panels
Instrumentation for the main control position and aux-
iliary control position.
1. Temperature gauge. Indicates the engine coolant
temperature.
2. Oil pressure gauge. Indicates the pressure of the
engine lubricant.
3. Voltmeter. Indicates the charge voltage from the
alternator when the engine is running and the bat-
tery voltage when the engine is stopped.
4. Tachometer. Indicates the speed of the engine in
rpm. (recommended cruising speed is shown in
the chapter “Operation”)
5. Hour counter. Shows the total number of engine
running hours as a decimal number.
6. Press button for testing and acknowledging
alarms (see next page “Warning displays”).
7. Siren for acoustic alarm that sounds if one of the
warning lamps comes on.
8. Warning display (see next page “Warning dis-
plays”, pos. 1–4).
9. Starting switch (see next page).
10. Press button for instrument illumination.
11. Oil pressure gauge. Indicates the oil pressure in
the reverse gear.
12. Charge air pressure gauge. Indicates the turbo-
charger boost pressure.
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16
Instrumentation
Control panels
Control panels for the main control position and auxil-
iary control position.
1. Siren for acoustic alarm that sounds if one of the
warning lamps comes on.
2. Press button for instrument illumination.
3. Press button for testing and acknowledging
alarms (see “Warning displays” below).
4. Starting switch.
5. Start button.
6. Stop button.
Warning displays
If the acoustic alarm sounds, one of the warning dis-
play lamps will immediately start to flash to indicate
the cause of the alarm.
1. Coolant temperature too high.
2. Lubricant pressure too low.
3. Alternator not charging
4. Not used
5. Lubricant level too low* (accessory).
6. Coolant level too low* (accessory).
7. Water in fuel pre-filter (accessory).
8. Auxiliary (accessory).
* Warns for low level with stationary engine and starter key in position I
(“Drive position”). Refill to correct level before starting the engine.
After an alarm
Press the “Alarm test” button to acknowledge and
terminate the acoustic alarm. The relevant warning
lamp will continue to flash until the fault has been
rectified.
Alarm test
After pressing the “Alarm test” button, the warning
lamps will come on and the acoustic alarm will start to
sound. Make a habit of always performing an alarm
test before starting.
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17
Instrumentation
Starting switch
Delivered with the starter keys is a plate containing
the key code required when ordering additional start-
er keys. Do not keep the code where unauthorized
persons can access it.
S = Stop position.
0 = Key can be inserted and removed.
I = Voltage on (drive position).
II = Not used
III = Start position.
IMPORTANT! Read the starting instructions in
the chapter “Starting the engine”.

18
Instrumentation
Control panel EDC (Type I)
If the boat has a single engine there are three buttons in the control panel. If the boat has two engines there are
six buttons in the control panel. Each button has an LED which indicates the present selection or status.
Note that certain buttons and LEDs are duplicated on the control panel for two engines. The buttons on the left
hand side of the panel apply to the port engine. The buttons on the right hand side of the panel apply to the star-
board engine.
1. Activation button
The control position is activated by pressing the but-
ton in for at least one second so that the engine can
be started and controlled from the control position.
Indicator (red):
No light: The control position is not activated
Light on: The control position is activated
Flashing: The control position cannot be activated
because the control lever is not in the neutral posi-
tion. Check all control positions.
2. Neutral button
By pressing the button at the same time as the con-
trol lever is moved forward to the shifting position, the
control lever shift function is disengaged so that the
engine can be revved freely.
Indicator (green):
No light: Reverse gear is engaged
Light on: The control lever is in neutral position
Flashing: The control lever shift mechanism is disen-
gaged
3. Diagnostics button
The button is used if the diagnostic function has reg-
istered a malfunction (indicator flashes).
By pressing the button the message is acknowl-
edged. When the button is released a diagnostic trou-
ble code (DTC) flashes which guides any fault-tracing
(see chapter “Diagnostic function” for more informa-
tion).
Indicator (yellow):
No light: Normal position
Flashing: Diagnostic function has registered a mal-
function
4. Synchronization button
Press the button in for at least one second to engage
or disengage the synchronization function (the func-
tion is automatically activated at start).
The synchronization function automatically adjusts
the engines to the same speed (RPM).
Indicator (blue):
No light: The synchronization function is not activat-
ed
Light on: The synchronization function is activated
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