21383314 Volvo.Penta Timing gear cover

Use of commercially available cooling system cleaners may cause damage to cooling system components. Only use the cooling system cleaners that are approved for Caterpillar engines.
A good time to inspect the water pump, replace the water temperature regulator, and replace hoses is when your engine's cooling system has been drained.Drain
(1) Radiator filler cap. (2) Radiator drain valve.1. Stop the engine and allow the engine to cool. Loosen the radiator filler cap slowly in order to relieve any pressure. Remove the radiator filler cap.
Cooling system drain plug.2. Place a suitable container under the cooling system drain plug in order to catch the coolant that will drain. Remove the cooling system drain plug.3. Open the radiator drain valve. Allow the coolant to drain.
Dispose of the used coolant properly or recycle the used coolant. Various methods have been proposed for reclaiming used coolant for reuse in engine cooling systems. The full distillation procedure is the only method acceptable by Caterpillar for reclaiming the used coolant.
For information regarding the disposal and the recycling of used coolant, contact the Caterpillar Service Technology Group:Outside Illinois: 1-800-542-TOOLInside Illinois: 1-800-541-TOOLCanada: 1-800-523-TOOLClean
1. Flush the cooling system with clean water in order to remove any debris.2. Close the radiator drain valve.
Fill the cooling system at a rate of 19 L (5 US gal) or less per minute in order to avoid air locks.
3. Fill the cooling system with a mixture of clean water and Caterpillar Fast Acting Cooling System Cleaner. Add .5 L (1 pt) of cleaner per 15 L (4 US gal) of cooling system capacity. Install the radiator filler cap.4. Start and run the engine for a minimum of 30 minutes with the coolant temperature at 82°C (180°F). Stop the engine and allow the engine to cool.5. Loosen the radiator filler cap slowly to relieve any pressure. Remove the radiator filler cap. Remove the cooling system drain plug. Open the radiator drain valve. Allow the cleaning solution to drain. Flush the cooling system with clean water until the draining water is clear. Close the radiator drain valve. Clean and install the cooling system drain plug.Cooling Systems with Heavy Deposits or Plugging
For the following procedure to be effective, there must be some active flow through the radiator and the other cooling system components.Follow the same steps as outlined above, with the following modifications to steps 3 and 4:3. Fill the cooling system with a mixture of clean water and Caterpillar Fast Acting Cooling System Cleaner. Add .5 L (1 pt) of cleaner per 3.8 to 7.6 L (1 to 2 US gal) of cooling system capacity. Install the cooling system filler cap.4. Start and run the engine for a minimum of 90 minutes with a coolant temperature of at least 82°C (180°F). Stop the engine and allow the engine to cool.Fill
Refer to the Coolant Specifications for all information regarding acceptable water, coolant/antifreeze, and supplemental coolant additive requirements. Refer to the Refill Capacities chart in this publication for the capacity of your engine's system.
Fill the cooling system at a rate of 19 L (5 US gal) or less per minute in order to avoid air locks.
1. Fill the system with the recommended coolant/antifreeze mixture.2. Start and run the engine with the radiator filler cap removed. Allow the coolant to warm, the water temperature regulator to open and the coolant level to stabilize. Check the coolant level. Add coolant mixture if necessary in order to bring the coolant to within 13 mm (1/2 inch) below the bottom of the fill tube or to the correct level on the sight glass (if equipped).3. Check the condition of the radiator filler cap gaskets. If the gaskets are damaged, replace the old radiator filler cap with a new radiator filler cap. If the gaskets are not damaged, pressure test the radiator filler cap with a 9S-8140 Pressurized Pump Group (available from your Caterpillar dealer). The correct radiator filler cap pressure is stamped on the face of the radiator filler cap. If the radiator filler cap does not hold the correct pressure, replace the old radiator filler cap with a new radiator filler cap. Install the radiator filler cap.4. Start the engine. Inspect for coolant leaks and proper operating temperature.Water Pump-3306B Engine
Inspect/Replace Seal
Typical water pump.Over concentration of SCA, 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 in order to reduce the coolant leakage.Refer to the Service Manual for the disassembly and assembly procedure.Valve Lash-3406C Engine
Check/Adjust
Initial valve lash adjustment is recommended at the first scheduled oil change interval due to initial wear and seating of valve train components.Subsequent valve lash adjustments should be made Every 2000 Hours.This maintenance is recommended by Caterpillar as part of a lubrication and preventive maintenance schedule to provide maximum engine life.
Operation of Caterpillar engines with improper valve adjustments will reduce engine efficiency. This reduced efficiency could result in excessive fuel usage and/or shortened engine component life.Only qualified service personnel should perform this maintenance. Refer to the Service Manual or your Caterpillar dealer for the complete valve lash adjustment procedure.
Be sure the engine cannot be started while this maintenance is being performed. To prevent possible injury, do not use the starting motor to turn the flywheel.Hot engine components can cause burns. Allow additional time for the engine to cool before measuring/adjusting valve lash clearance.
Measure the valve lash with the engine stopped. In order to obtain an accurate measurement, the allow the valves to cool before performing this maintenance.Valve Rotators