Lexus IS250 IS220d GSE20 ALE20 4GR-FSE COOLING

RADIATOR - REASSEMBLY

1. INSTALL RADIATOR UPPER TANK AND LOWER TANK
Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Check that there are no foreign objects in the lock plate groove, and install a new O-ring. Make sure that the O-ring is not twisted.

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

Tap the lock plate with a plastic hammer so that there is no gap between the lock plate and tank.

2. ASSEMBLE SST
  • SST
  • 09230-01010
    09231-14010
Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Install the punch assembly to the overhaul handle, inserting it in the hole in part A as shown in the illustration.

While gripping the handle, adjust the stopper bolt so that dimension B is as shown in the illustration.

  • Dimension B:
  • 8.4 mm (0.331 in.)
3. CAULK LOCK PLATE
  • SST
  • 09230-01010
Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

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 it is stopped by the stopper bolt.

Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Do not tap the areas protruding around ports (1), claws (2) and grooves (3).

Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

The points shown in the illustration cannot be tapped with SST. Use pliers and be careful not to damage the core plates.

Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Check lock plate height (H) after completing caulking.

4. CHECK FOR WATER LEAKS
  • SST
  • 09230-01010
Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Plug the inlet and outlet pipes of the radiator with SST.

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

  • Test pressure:
  • 177 kPa (1.8 kgf*cm2, 26 psi)
  • NOTICE:
  • Do not apply more than 177 kpa (1.8 kgf*cm2, 26 psi) to the radiator.

Submerge the radiator in water.

Radiator - Reassembly. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Check 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 air bubbles disappear.
LEXUS IS250, IS220d / GSE20 ALE20