Cooling System ServiceCooling System Service

CS6

NATEF Task A.1 D.7By Vance Bloom

OOBJECTIVEBJECTIVE

Student will inspect, test and flush cooling system

MMATERIALS ATERIALS NNEEDEDEEDED

1. Eye protection

2. Coolant

3. Hand Tools & Coolant Tester

4. Funnel

5. Hoist or Jack & Safety Stands

5. Vehicle (See Instructor)

PPROCEDUREROCEDURE

• 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.

Step 1Step 1• WEAR

• EYE

• PROTECTION!

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

Step 3Step 3

• Test coolant• Note condition on skill sheet

Step 4Step 4• Loosen drain plug & drain cooling system into clean

pan or bucket

Step 5Step 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

Step 6Step 6• Look up cooling system

capacity in one of the following:

• Repair manual• Mitchell-On-Demand• All-Data• Fast Spec• Vehicle Owner’s Manual

Step 7Step 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

Step 8Step 8• Do not forget to clean

and refill overflow reservoir with 50/50 coolant mix

• Check system for leaks

Step 9Step 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

Questions ?Questions ?• Contact Vance Bloom

• ASE Certified Master Auto Technician

• Hemet High School, ROP Automotive

• 909-765-9112

• E-mail: vbloom@hemetusd.k12.ca.usvbloom@hemetusd.k12.ca.us• Web: http://www.hemetusd.k12.ca.us/sites/hemeths/fac/

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