Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Radiator Assembly: Overhaul
- REMOVE DRAIN PLUG
- Remove the drain plug.
- Remove the O-ring.
- ASSEMBLE SST
SST 09230-01010 (09231-01010, 09231-01030)
- Install the claw to the overhaul handle, inserting it in the hole in part "A" as shown.
- While gripping the handle, adjust the stopper bolt so that dimension "B" is as shown.
Dimension: 0.2 to 0.3 mm (0.008 to 0.012 in.)
NOTE: If the stopper bolt is not adjusted, the claw may be damaged. - REMOVE 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)
- REMOVE RADIATOR TANK UPPER AND TANK LOWER
- Lightly tap the bracket of the radiator (or radiator hose inlet or outlet) with a soft-faced hammer and remove the tank.
- Remove the O-ring.
- REMOVE OIL COOLER ASSY
- Remove the screw and pipe.
- Remove the nut and plate washer.
- Remove the oil cooler.
- Remove the 2 O-rings from the oil cooler.
- INSTALL OIL COOLER ASSY
- Clean the O-ring contact surface of the lower tank and oil cooler.
- Install 2 new O-rings (1) to the oil cooler (2).
- Install the oil cooler to the lower tank (3).
- Install the plate washer (4) and nut (5).
Torque: 8.3 N.m (85 kgf.cm, 73 in.lbf)
- Install the pipe (6).
Torque: 14.7 N.m (150 kgf.cm, 11 ft.lbf)
- Install the screw (7).
- 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.
Therefore, first correct any deformation with pliers or similar object.
- 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. - If the sides of the lock plate groove are deformed, reassembly of the tank will be impossible.
- INSTALL RADIATOR TANK UPPER AND TANK LOWER
- After checking that there are no foreign objects in the lock plate groove, install a new O-ring without twisting it.
HINT:
When cleaning the lock plate groove, lightly rub it with sand paper without scratching it.
- Install the tank without damaging the O-ring.
- Tap the lock plate with a soft-faced hammer so that there is no gap between the lock plate and the tank.
- After checking that there are no foreign objects in the lock plate groove, install a new O-ring without twisting it.
- ASSEMBLE SST
SST 09230-01010, 09231-14010
- Install the punch assembly to the overhaul handle, inserting it in the hole in part "A" as shown.
- While gripping the handle, adjust the stopper bolt so that dimension "B" shown.
Dimension "B": 8.4 mm (0.331 in.)
- CAULK LOCK PLATE
- Lightly press SST against the lock plate in the order shown. After repeating this a few times, fully caulk the lock plate by gripping the handle until stopped by the stopper plate.
SST 09230-01010
HINT:
- Do not tap the areas protruding around the pipes, brackets or tank ribs.
- The points shown in the illustration and oil cooler near here cannot be tapped with the SST. Use pliers or similar objects and be careful not to damage the core plates.
- Check the lock plate height (H) after completing the caulking.
Plate height (H): 7.40 to 7.80 mm (0.2913 to 0.3071 in.)
If not within the specified height, adjust the stopper bolt of the handle again and caulk again.
- Lightly press SST against the lock plate in the order shown. After repeating this a few times, fully caulk the lock plate by gripping the handle until stopped by the stopper plate.
- INSTALL DRAIN PLUG
- Install a new O-ring to the drain plug.
- Install the drain plug.
- INSPECT FOR WATER LEAKS
- Plug the inlet and outlet pipes of the radiator with SST.
SST 09230-01010
- Using a radiator cap tester, apply pressure to the radiator.
Test pressure: 177 kPa (1.8 kgf/cm 2 , 26 psi)
- Submerge the radiator in water.
- 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. Therefore, before doing the water leak test, first swish the radiator around in the water until all air bubbles disappear.
- Plug the inlet and outlet pipes of the radiator with SST.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.