For 1990-2009 cars only
- Clean the balance shafts in solvent.
- Remove the balance shaft front bearing carriers from the balance shafts.
- Inspect the bearing surfaces on the balance shafts for scoring or unusual wear.
- Inspect the balance shaft drive sprockets for wear, damage, or missing teeth. When installing new balance shaft drive sprockets tighten to 55 N·m (41 lb ft).
- Measure the rear bearing journals on the balance shafts, the journals should be 36.723-36.743 mm (1.4458-1.4466 in) in diameter.
- Measure the front bearing journals on the balance shafts, the front bearing journals should be 20.020-20.000 mm (0.7881-0.7874 in) in diameter.
- When the balance shafts have been installed in the engine block, check for smooth rotation, sticking, binding, or roughness.
