ROCKER ARM GP 3494715 - Caterpillar

Make sure you read and understand the information in the topics Safety and Cooling System Specifications for all information pertaining to water, antifreeze and supplemental coolant additive requirements before you proceed with maintenance of the cooling system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Drain the coolant whenever the coolant is dirty or whenever foaming is observed.The filler cap is located inside the access door in the top, left side of the radiator guard.
Slowly loosen the filler cap in order to relieve system pressure. Remove the filler cap.
Remove the access cover. The cover is located in the front, bottom guard.
Remove the plug from the drain valve. Install a 12.7 millimeter (.5 inch) pipe into the drain valve. The pipe requires 1/2 - 14 NPTF threads.
Clamp a hose to the pipe in order to direct the coolant into a suitable container.
Open the drain valve. Allow the coolant to drain into a suitable container.
Close the drain valve. Fill the system with a solution which consists of clean water and of cooling system cleaner. The concentration of the cooling system cleaner should be 6 to 10 percent.
Start the engine. Run the engine for 90 minutes. Stop the engine. Drain the cleaning solution into a suitable container.
While the engine is stopped, flush the system with water. Flush the system until the draining water is clear.
Close the drain valve.
Replace the plug in the drain valve and install the access cover.
Add the coolant solution. See the following topics in this publication:
Cooling System Specifications
Refill CapacitiesNote: Caterpillar antifreeze contains additive. If you are using Caterpillar antifreeze, do not add the supplemental coolant additive at this time. Also, do not change the supplemental coolant additive element at this time.
Start the engine. Run the engine without the filler cap until the thermostat opens and the coolant level stabilizes.
Check the coolant level. Make necessary adjustments to the coolant level.
If the gasket is damaged, replace the filler cap. Install the filler cap.
Stop the engine.
Illustration 1 g00533931
Clean the radiator cores with compressed air. You may need to use water in order to remove debris.