Download 3208 MARINE ENGINE

62
Maintenance Section
Battery or Battery Cable - Disconnect
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Battery or Battery Cable Disconnect
Cooling System Coolant
(DEAC) - Change
SMCS Code: 1402-029
SMCS Code: 1350-070; 1395-044
1. Turn the start switch to the OFF position. Turn the
ignition switch (if equipped) to the OFF position
and remove the key and all electrical loads.
Clean the cooling system and flush the cooling
system before the recommended maintenance
interval if the following conditions exist:
2. Disconnect the negative battery terminal at the
battery that goes to the start switch. Ensure that
the cable cannot contact the terminal. When four
12 volt batteries are involved, the negative side of
two batteries must be disconnected.
• The engine overheats frequently.
3. Tape the leads in order to help prevent accidental
starting.
4. Proceed with necessary system repairs. Reverse
the steps in order to reconnect all of the cables.
• Foaming is observed.
• The oil has entered the cooling system and the
coolant is contaminated.
• The fuel has entered the cooling system and the
coolant is contaminated.
NOTICE
Use of commercially available cooling system cleaners may cause damage to cooling system components. Use only cooling system cleaners that are approved for Caterpillar engines.
Note: Inspect the water pump and the water
temperature regulator after the cooling system has
been drained. This is a good opportunity to replace
the water pump, the water temperature regulator and
the hoses, if necessary.
Drain
Pressurized System: Hot coolant can cause serious burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the pressure.
1. Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cooling
system filler cap.
2. Open the cooling system drain valve (if equipped).
If the cooling system is not equipped with a drain
valve, remove one of the drain plugs.
Allow the coolant to drain.