5008155 EVINRUDE Service Manual - French

Engine Valve Lash
Check/Adjust
Initial valve lash adjustment on new, or rebuilt engines is recommended and should have been performed at the first normally scheduled oil change interval (250 Hours) due to initial wear and seating of valve train components. Subsequent adjustments should be made at every 3000 Hours.Set the valve lash clearance to the nominal value given in the Valve Lash Setting chart shown previously in this manual. Refer to the information in the Every 250 Hour maintenance and the Service Manual for the procedure.Cooling System
Clean/Flush Coolant
Do not perform this maintenance until you read and understand the material in the Safety and Cooling System Specifications sections of this publication.Caterpillar does not recommend the use of cooling system solutions that are intended to stop leaks. Use of these products may result in excessive internal deposits that could reduce the engine's heat transfer characteristics as well as damage to the water pump seals.This procedure is to be used for normal maintenance of cooling systems surfaces to return to "like new" condition. For heavy build-up of scale and deposits, a severe acid-type, commercial cleaner or mechanical cleaning will be required.
Performing maintenance on the cooling system is important because the cooling system has a direct effect on the operation and service life of the engine.Improper maintenance can result in a variety of problems that could shorten the engine's service life, reduce the efficiency of the cooling system, result in poor engine performance, and in some cases, result in an increase in fuel consumption.Add Cooling System Cleaner
There are two types of cooling system cleaners available. One is the 6V4511 Standard-Type in the 1.9 L (1/2 U.S. gal) container and the other is the 4C4611 Fast Acting-Type in the 3.8 L (1 U.S. gal) container.The Standard-Type requires approximately 120 hours of engine operation to remove scale, lime and other debris. The Fast Acting-Type requires only 90 minutes of engine operation. Both types must remain in the system for a minimum of specified time to work properly, however, neither type will harm the engine if left in for a longer period of time.The Standard-Type must be added before the Every 3000 Hour maintenance interval. Add 1 liter (1 U.S. quart) of Caterpillar Cooling System Cleaner, Standard-Type, for every 15 liter (4 U.S. gallon) of cooling system capacity. Continue to operate the engine for the specified time before draining.The Fast Acting-Type may be added just prior to draining (such as the same day of a day trip) and the system cleaned and flushed after operating for the specified time period. Follow the directions on the container.Drain
When you drain, clean, flush and replace the coolant, small particles, undesirable chemicals, scale and other deposit formations are removed. These deposits reduce the necessary heat transfer characteristics of the cooling system.Coolant water drain groups, installed in the jacket water pumps, may be available for draining engine coolant. Contact your Caterpillar dealer for assistance.
Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand.
With the engine shut down and cool, use the following procedure:1. Stop the engine and allow to cool. Disable the starting system and place DO NOT OPERATE tags on the START switch in the pilot house and on the engine instrument panel.2. Loosen the cooling system vent cap slowly to relieve pressure.3. Drain the system according to the requirements of your system. Check the water pump breather filter for blockage or debris and replace if necessary.Water Pump Seal
Over concentration of coolant additive (Conditioner), mineral deposits from hard water or cooling system contamination can accelerate the wear on the water pump coolant seal. The cooling system maintenance interval provides an opportunity to inspect and replace the water pump seal if necessary to reduce coolant leakage.Dispose of used engine coolant in an environmentally correct way or recycle. Various methods have been proposed to reclaim used coolant for reuse in engine cooling systems. The full distillation procedure is the only method acceptable by Caterpillar to reclaim the used coolant and for information regarding disposal and recycling of used coolant.4. Clean and install all drain plugs and/or close the cooling system drain valve(s).Replace Thermostat, Gaskets and Seal
Refer to the Service Manual for detailed instructions regarding Disassembly and Assembly of the Cooling System. If replacing thermostats ONLY, drain the coolant from the cooling system to a level below the thermostat housing. 5. Disconnect hose assembly from thermostat housing assembly.6. Remove bolts and thermostat housing assembly.7. Remove the gasket, thermostat and seal from the housing.
Former thermostats may be used, if they meet test specifications shown in the chart below and are not damaged or have excessive buildup of deposits.
The thermostats can be reused if they are tested and meet the test specifications in the Service Manual.Flush
8. Refill the cooling system with clean water mixed with the proper concentration (six to ten percent) of Fast Acting-Type Caterpillar Cooling System Cleaner. Tighten cooling system vent cap. For proper cooling system maintenance cleaning, refer to label directions for the type of Caterpillar Cooling System Cleaner used in your cooling system.9. Start and run (operate) the engine to circulate fluid in the cooling system.10. Stop the engine and allow to cool. Loosen cooling system vent cap and drain plugs.11. Drain the cleaning solution. Flush the cooling system with clean water and a neutralizing solution until draining water is clear. Clean and install all drain plugs and/or close the drain valve. Sodium Carbonate crystals at a rate of 250 grams per 40 liters of water (1/2 pound per 10 U.S. gallon of water) may be used as a neutralizer. Repeat Steps 8 thru 11 if necessary until the draining water is clear.Install Thermostat
Caterpillar engines incorporate a shunt design cooling system and require operating the engine with a thermostat installed.If the thermostat is installed wrong, it will cause the engine to overheat.
Inspect gaskets before assembly and replace if worn or damaged.12. Install a new seal in the thermostat housing and install a new thermostat.13. Install a new gasket