1. Cooling System Service CS6 NATEF Task A.1 D.7 By Vance Bloom

2. O BJECTIVE Student will inspect, test and flush cooling system

3. M ATERIALS N EEDED 1. Eye protection 2. Coolant 3. Hand Tools & Coolant Tester 4. Funnel 5. Hoist or Jack & Safety Stands 5. Vehicle (See Instructor)

4. P ROCEDURE WEAR EYE PROTECTION! With engine cool ! Remove radiator cap. Test coolant. Note condition on skill sheet. Inspect radiator cap. Note appearance. Loosen drain plug & drain cooling system. Tighten drain plug. Fill cooling system with water. Run engine till thermostat opens. Drain cooling system. Note appearance of fluid drained. Refill and repeat until clean water comes out of engine. Tighten drain plug. With 100% coolant, add 1/2 volume of cooling system capacity. Fill the balance of system with water. Run engine until warm and top off with 50/50 mix of coolant & water. Do not forget to clean and refill overflow reservoir with 50/50 coolant mix. Check system for leaks.

5. Step 1 WEAR EYE PROTECTION!

6. Step 2 With engine cool ! Remove radiator cap Inspect radiator cap Note appearance

7. Step 3 Test coolant Note condition on skill sheet

8. Step 4 Loosen drain plug & drain cooling system into clean pan or bucket

9. Step 5 Tighten drain plug. Fill cooling system with water Run engine till thermostat opens Drain cooling system. (Note appearance of fluid drained) Refill with water and repeat until clean water comes out of engine

10. Step 6 Look up cooling system capacity in one of the following: Repair manual Mitchell-On-Demand All-Data Fast Spec Vehicle Owner’s Manual

11. Step 7 With 100% coolant, add 1/2 volume of cooling system capacity. –Example if capacity is 10quarts –add 5 quarts coolant Fill the balance of system with water. Run engine until warm and top off with 50/50 mix of coolant & water

12. Step 8 Do not forget to clean and refill overflow reservoir with 50/50 coolant mix Check system for leaks

13. Step 9 Fill out all information on task sheet Clean and put away all tools Dispose of waste coolant in appropriately labeled waste coolant container Throw away empty coolant bottle Clean work area completely Have instructor evaluate and sign task sheet

14. Questions ? Contact Vance Bloom ASE Certified Master Auto Technician Hemet High School, ROP Automotive 909-765-9112 vbloom@hemetusd.k12.ca.usE-mail: vbloom@hemetusd.k12.ca.us Web: http://www.hemetusd.k12.ca.us/sites/hemeths/fac/vbloom/index.html