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Radiator ASSY: Overhaul

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE PACKING 
  2. REMOVE RADIATOR CAP SUB-ASSY 
  3. REMOVE DRAIN PLUG 
    1. Remove the drain plug.
    2. Remove the O-ring.
  4. ASSEMBLE SST 

    SST 09230-01010

    1. Install the claw to the overhaul handle, inserting it in the hole in part A as shown in the illustration.
    2. While gripping the handle, adjust the stopper bolt so that dimension B is as shown in the illustration.

      Dimension B: 0.2 to 0.3 mm (0.008 to 0.012 in.) 

      NOTE: If this adjustment is not performed, the claw will be damaged.
      Fig 1: Installing Claw To Overhaul Handle
      G01049282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. UNCAULK LOCK PLATE 

    Using SST to release the caulking, grip the handle until stopped by the stopper bolt.

    SST 09230-01010 (09231-01010, 09231-01030)

    Fig 2: Using SST To Stopper Bolt
    G01049283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE RADIATOR TANK UPPER AND TANK LOWER 
    1. Lightly tap the bracket of the radiator (or radiator hose inlet or outlet) with a plastic hammer and remove the tank.
    2. Remove the O-ring.
      Fig 3: Removing Radiator Tank Upper And Tank Lower
      G01049284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE OIL COOLER ASSY 
    1. Remove the 2 inlets.
    2. Remove the 2 nuts, 2 plate washers and oil cooler.
    3. Remove the 2 O-rings from the oil cooler.
      Fig 4: Removing Oil Cooler Assy
      G01049285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL OIL COOLER ASSY 
    1. Install 2 new O-rings to the oil cooler.
    2. Install the oil cooler to the lower tank with the 2 plate washers and 2 nuts.

      Torque: 8.4 N.m (85 kgf.cm, 74 in.lbf) 

    3. Install the 2 inlets.

      Torque: 14.7 N.m (150 kgf.cm, 11 ft.lbf) 

      Fig 5: Installing Oil Cooler Assy
      G01049286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSPECT LOCK PLATE FOR DAMAGE 

    Inspect the lock plate for damage.

    HINT:

    • If the sides of the lock plate groove are deformed, reassembly of the tank will be impossible. Correct any deformations with pliers.
    • Water leakage will result if the bottom of the lock plate groove is damaged or dented. Repair or replace if necessary.
      NOTE: The radiator can only be recaulked 2 times. After the 2nd time, the radiator core must be replaced.
      Fig 6: Inspecting Lock Plate
      G01049287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSTALL RADIATOR TANK UPPER AND TANK LOWER 
    1. Check that there are no foreign objects in the lock plate groove, and install a new O-ring. Make sure the O-ring is not twisted.

      HINT:

      When cleaning the lock plate groove, lightly rub it with sandpaper without scratching it.

      Fig 7: Identifying O-Ring
      G01049288Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the tank without damaging the O-ring.
    3. Tap the lock plate with a plastic hammer so that there is no gap between the lock plate and the tank.
      Fig 8: Identifying Plastic Hammer
      G01049289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. ASSEMBLE SST 

    SST 09230-01010, 09231-14010

    1. Install the punch assembly to the overhaul handle, inserting it in the hole in part A as shown in the illustration.
    2. While gripping the handle, adjust the stopper bolt so that dimension B is as shown in the illustration.

      Dimension B:8.4 mm (0.34 in.) 

      Fig 9: Adjusting Stopper Bolt
      G01049290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. CAULK LOCK PLATE 
    1. Lightly press SST against the lock plate in the order shown in the illustration. After repeating this a few times, fully caulk the lock plate by gripping the handle until stopped by the stopper plate.

      SST 09230-01010

      Fig 10: Lighting Press SST Against Lock Plate
      G01049291Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • Do not tap the areas protruding around the ports (1), flange (2) and brackets (3).
        Fig 11: Identifying(1)Flange(2)And Brackets(3)
        G01049292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • The points shown in the illustration cannot be tapped with SST. Use pliers and be careful not to damage the core plates.
        Fig 12: Using Pliers And Be Careful
        G01049293Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the lock plate height (H) after completing the caulking

      Plate height (H): 8.8 mm (0.346 in.) 

      If not within the specified height, adjust the stopper bolt of the handle again and caulk the lock plate again.

      Fig 13: Identifying Measuring Plate Height
      G01049294Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. INSTALL DRAIN PLUG 
    1. Install a new O-ring to the drain plug.
    2. Install the drain plug.
  14. INSPECT FOR WATER LEAKS 
    1. Plug the inlet and outlet pipes of the radiator with SST.

      SST 09230-01010

    2. Using a radiator cap tester, apply pressure to the radiator.

      Test pressure: 177 kPa (1.8 kgf/cm 2  , 26 psi) 

    3. Submerge the radiator in water.
      Fig 14: Using A Radiator Cap Tester
      G01049295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Inspect for leaks.

      HINT:

      On radiators with resin tanks, there is a clearance between the tank and lock plate where a minute amount of air will remain, giving the appearance of an air leak when the radiator is submerged in water. Before doing the water leak test, first shake the radiator in the water until all air bubbles disappear.

  15. INSTALL RADIATOR CAP SUB-ASSY 
  16. INSTALL PACKING 
    Fig 15: Inspecting For Leaks
    G01049296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002