Cooling System - Radiator Cap Inspection Procedure
ENGINEEG007-05
March 28, 2005
Title:
RADIATOR CAP INSPECTION
Models:
All Models
Introduction
The procedure for inspecting the radiator cap has been revised. Please refer to the following procedures when inspecting the radiator cap on all Lexus models.
Applicable Vehicles
All Lexus models.
Required Equipment
NOTE:
Additional Lexus Approved Dealer Equipment may be ordered by calling Lexus Approved Dealer Equipment at 1-800-368-6787.
Warranty Information
Required SSTs
NOTE:
Additional SSTs may be ordered by calling SPX/OTC at 1-800-933-8335.
Radiator Cap Identification
Procedure
1. Use the illustration to identify the vehicle's radiator cap type and kPa rating.
2. Proceed to the required inspection procedure for the radiator cap and kPa rating.
Radiator Cap Inspection Procedure
Type: N-cap, 88 kPa
1. Remove coolant and any foreign material on rubber points "A", "B" and "C."
2. Check that points "A", "B" and "C" are not deformed, cracked, or swollen.
3. Check that points "C" and "D" are not stuck together.
4. Apply engine coolant to points "B" and "C" before using the radiator cap tester.
^ Radiator Cap Tester:
Snap-On/Sun P/N SVTS262A (or equivalent)
5. Before installing the radiator cap tester, use the applicable radiator cap adaptor provided in the following SST kits in conjunction with the radiator cap tester:
SST P/N 09230-00030-02 (09231-10080-01) or
09230-00020-02 (09231-10060-01)
6. When using the radiator cap tester, tilt it more than 30 degrees.
7. Pump the radiator cap tester several times, and check the maximum pressure.
Pumping speed: 1 pump/second
HINT:
Stop pumping when the valve opens and read the gauge. The gauge must be within the standard values shown when the pressure valve opens.
The cap is considered OK when the - pressure holds steady or falls very slowly, but holds within the standard values listed for one minute.
Type: N-cap, 108 kPa
1. Remove coolant and any foreign material on rubber points "A", "B" and "C."
2. Check that points "A", "B " and "C" are not deformed, cracked, or swollen.
3. Check that points "C" and "D" are not stuck together.
4. Apply engine coolant to points "B" and "C" before using the radiator cap tester.
^ Radiator Cap Tester:
Snap-On/Sun P/N SVTS262A (or equivalent)
5. Before installing the radiator cap tester, use the applicable radiator cap adaptor provided in the following SST kits in conjunction with the radiator cap tester:
SST P/N 09230-00030-02 (09231-10080-01) or 09230-00020-02 (09231-10060-01)
6. When using the radiator cap tester, tilt it more than 30 degrees.
7. Pump the radiator cap tester several times, and check the maximum pressure.
Pumping speed: 1 pump/second
HINT:
Stop pumping when the valve opens and read the gauge. The gauge must be within the standard values shown when the pressure valve opens. The cap is considered OK when the pressure holds steady or falls very slowly, but holds within the standard values shown for one minute.
Type: Compact Cap, 88 kPa
1. Remove coolant and any foreign material on rubber points "A", "B", and "C".
2. Check that points "A" and "B" are not deformed, cracked, or swollen.
3. Check that points "B" and "C" are not stuck together.
4. Apply engine coolant to point "B" before using the radiator cap tester.
^ Radiator Cap Tester:
Snap-On/Sun P/N SVTS262A (or equivalent)
5. Before installing the radiator cap tester, use the applicable radiator cap adaptor provided in the following SST kits in conjunction with the radiator cap tester:
^ SST P/N 09230-00030-02 (09231-10080-01) or 09230-00020-02 (09231-10060-01)
6. When using the radiator cap tester, tilt it more than 30 degrees.
7. Pump the radiator cap tester several times, and check the maximum pressure.
^ Pumping speed: 1 pump/second
HINT:
Stop pumping when the valve opens and read the gauge. The gauge must be within the standard values shown when the pressure valve opens.
The cap is considered OK when the - pressure holds steady or falls very slowly, but holds within the standard values shown for one minute.
Type: Compact Cap, 108 kPa
1. Remove coolant and any foreign material on rubber points "A", "B" and "C".
2. Check that points "A" and "B" are not deformed, cracked, or swollen.
3. Check that points "B" and "C" are not stuck together.
4. Apply engine coolant to point "B" before using the radiator cap tester.
^ Radiator Cap Tester:
Snap-On/Sun P/N SVTS262A (or equivalent)
5. Before installing the radiator cap tester, use the applicable radiator cap adaptor provided in the following SST kits in conjunction with the radiator cap tester:
SST P/N 09230-00030-02 (09231-10080-01) or 09230-00020-02 (09231-10060-01)
6. When using the radiator cap tester, tilt it more than 30 degrees.
7. Pump the radiator cap tester several times, and check the maximum pressure.
Pumping speed: 1 pump/second
HINT:
Stop pumping when the valve opens and read the gauge. The gauge must be within the standard values listed below when the pressure valve opens.
The cap is considered OK when the - pressure holds steady or falls very slowly, but holds within the standard values for one minute.
Type: Plastic Cap, 108 kPa
1. Remove coolant and any foreign material on 0-ring "A".
2. Check that 0-ring "A" is not deformed, cracked, or swollen.
3. Apply engine coolant to 0-ring "A" and rubber point "B" before using the radiator cap tester.
^ Radiator Cap Tester:
Snap-On/Sun P/N SVTS262A (or equivalent)
4. Before installing the radiator cap tester, use the applicable radiator cap adaptor provided in the following SST kits in conjunction with the radiator cap tester:
SST P/N 09230-00030-02 (09231-10080-01) or 09230-00020-02 (09231-10060-01)
5. When using the radiator cap tester, tilt it more than 30 degrees.
6. Pump the radiator cap tester several times, and check the maximum pressure.
Pumping speed: 1 pump/second
HINT:
Stop pumping when the valve opens and read the gauge. The gauge must be within the standard values shown when the pressure valve opens.
The cap is considered OK when the - pressure holds steady or falls very slowly, but holds within the standard values shown for one minute.