Electrical
System
The engine is equipped with a
2-pole electrical system and an alternator. System voltage is 24V.
WARNING!
Always stop the engine and break
the current using the main switches before working on the engine.
Main switch
IMPORTANT!
Never disconnect the current with
the main switches when the engine is running, the alternator and electronics
could be damaged. The main switches must never be switched off before the
engine has stopped. If the circuit between the alternator and the battery is
disconnected when the engine is running, the alternator and electronics can be
damaged. For the same reason the charging circuits must never be re-connected
with the engine running.
Fuses
The engine is equipped with a 10
A circuit breaker which cuts the current if overloaded.
The circuit breaker is located on
the left-hand side of the Volvo engine Location of Sensors.
The engine stops if the fuse
trips. If the circuit breaker trips frequently, an authorized Volvo Penta
workshop should be contacted to investigate the cause of the overload.
Electrical
Connections
Check that electrical connections
are dry, free from oxide, and that they are securely tightened.
Battery,
Maintenance
WARNING!
Risk of fire and explosion. Never
allow an open flame or electric sparks near the battery or batteries.
WARNING!
Never confuse the positive and
negative poles on the batteries. Risk of arcing and explosion.
WARNING!
The battery electrolyte contains
extremely corrosive sulfuric acid. Protect your skin and clothes when charging
or handling batteries. Always use protective goggles and gloves. If battery
electrolyte comes into contact with unprotected skin wash off immediately using
plenty of water and soap. If battery acid comes in contact with the eyes, flush
immediately with plenty of water and obtain medical assistance without delay.
Connecting and disconnecting the
battery.
Connecting
1 Connect the + cable (red) to
the + pole on the battery.
2 Connect the – cable (black) to
the – pole on the battery.
Disconnecting
1 Remove the – cable (black).
2 Remove the + cable (red).
Cleaning
Keep the batteries clean and dry.
Contamination and oxide on the batteries and battery poles can cause stray
currents, voltage drop and discharge, especially in wet weather. Remove
oxidation from the battery poles and terminals, using a brass brush. Tighten
the terminals securely and grease them with terminal grease or petroleum jelly.
Filling
The electrolyte level should be
5–10 mm (0.2– 0.4”) above the cell plates in the battery. Top up with distilled
water as required. After filling, the battery should be charged for at least 30
minutes by running the engine at idle. Some maintenance-free batteries have
special instructions, which must be followed.
Battery,
Charging
WARNING!
Risk of fire and explosion. Never
allow an open flame or electric sparks near the battery or batteries.
WARNING!
The battery electrolyte contains
extremely corrosive sulfuric acid. Protect your skin and clothes when charging
or handling batteries. Always use protective goggles and gloves. If battery
electrolyte comes into contact with unprotected skin wash off immediately using
plenty of water and soap. If battery acid comes in contact with the eyes, flush
immediately with plenty of water and obtain medical assistance without delay.
WARNING!
Never confuse the positive and
negative poles on the batteries. Risk of arcing and explosion.
IMPORTANT!
Observe the instruction manual
for the battery charger carefully. To avoid the risk of electrochemical
corrosion when an external charger is connected, the battery cables should be
removed from the batteries before the charger is connected. Always switch off
the charging current before the charging clips are removed.
• Charge
batteries if they have become discharged. During charging, unscrew the cell
plugs but leave them in the plug holes. Ventilate well, especially if the
batteries are charged in an enclosed space.
• If the
engine is not used for a longer period of time, the batteries should be fully
charged, then possibly trickle charged. Refer to the battery manufacturer’s
recommendations). Batteries are damaged by being left discharged, and can also
freeze and burst more easily in cold weather.
•Special
instructions apply to boost charging. Boost charging can shorten battery life,
and should therefore be avoided.
Storage
To prevent the engine and other
equipment from being harmed during long (2 months or more) periods out of
service, it must be conserved. Because it is of utmost importance that the
conservation be performed correctly, we have compiled a checklist covering the
most important points. Before taking the engine out of service for long
periods, it should be checked by a Volvo Penta dealer for possible need of
overhaul or repair.
CAUTION!
Read the chapter on Maintenance
before starting work. It contains instructions on how to carry out maintenance
and service operations in a safe and correct manner.
WARNING!
Conservations oils can be
flammable and dangerous to inhale. Ensure good ventilation. Use a protective
face mask when spraying.
IMPORTANT!
Remember the following must be
considered when cleaning with a high-pressure water jet: Never point
highpressure water jets directly at seals, rubber hoses or electrical
components. Never use the high-pressure function when washing the engine.
For up to 8
month’s stoppage:
Change the oil and oil filter on
the engine, then run the engine until warm.
More than 8
month's stoppage:
Conserve the lubrication and fuel
systems with conservation oil. Refer to the section Conservation of the
lubrication and fuel systems for more than 8 months’ stoppage.
• Make sure
the coolant has adequate antifreeze properties. Top up as necessary.
Alternatively, you can drain the
coolant (also drain the coolant filter).
• Drain any
water and contamination from the fuel filters and fuel tank. Fill the fuel tank
completely, to avoid condensation.
• Disconnect
the battery cables, clean and charge the batteries. Trickle charge the
batteries while the equipment is in storage. A poorly charged battery can
freeze and burst.
• Clean the
outside of the engine. Do not use a high pressure washer for engine cleaning.
Touch up paint damage with Volvo Penta original paint.
• Check and
rust-proof any control cables.
• Put a note
on the engine with the date, type of conservation and the conservation oil
used.
• Cover the
air filter, exhaust pipe and engine if necessary.
Bringing out
of storage
• Remove any
covers from the engine, air filter and exhaust pipe.
• Fill the
engine with the correct grade of oil into the engine, as necessary, refer to
Technical Data, Lubrication System. Install a new oil filter if the filter was
not changed during conservation.
• Install new
fuel filters and bleed the fuel system.
• Check the
drive belt(s).
• Check the
condition of all rubber hoses, and retighten the hose clamps.
• Close the
drain taps and install any drain plugs.
• Check the
coolant level. Top up as necessary.
• Connect the
fully charged batteries.
• Start the engine
and warm it up at fast idle with no load.
• Check that
no oil, fuel or coolant leakage occurs.
Conservation of the lubrication
and fuel systems for more than 8 months’ stoppage:
• Drain the
engine oil and fill up with conservation oil* to just over the MIN marking on
the dipstick.
• Connect the
fuel suction and return hoses to a 1/3 full jerrican containing conservation
oil* and 2/3 diesel fuel.
• Bleed the
fuel system.
• Start the
engine and run at a fast idle until about 2 liters (0.6 US gal) of the fluid in
the jerrican have been used. Stop the engine and re-connect the fuel suction
and return lines.
• Drain the
conservation oil from the engine.
• Follow the
other instructions on the previous page.
* Conservation oils are sold by
oil companies.
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