GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2009 🢒 Astra 🢒 Engine 🢒 Engine Mechanical - 1.6L (LDE or LLU) and 1.8L (2H0) 🢒 Piston and Connecting Rod Disassemble

    Object Number: 1936834 Size: LH
  1. Remove the piston with con-rod. Refer to 1401300 - Piston with Con-rod, Remove and Install .

    2. Important: Note installation position of the piston in respect of the con-rod.

  2. Detach the piston from the con-rod.
    3. • Remove the retainer (1) from the piston eye.
    • Do not damage the bore.
    • Press the piston pin (2) out of the piston.
  3. Remove the piston rings using piston ring pliers (1).

    4. Remove oil carbon from the groove with a split piston ring, filed to a wedge-shape.

  4. Measure the piston ring gap.
    5. • Tension the piston ring in the cylinder and measure the gap with a feeler gauge.
    • Permissible ring gap:
       - Rectangular compression ring (2): 0.20-0.40 mm
       - Tapered compression ring (3): 0.40-0.60 mm
       - Oil scraper ring (4): 0.25-0.75 mm

    Object Number: 1937061 Size: LH
  5. Check piston ring vertical play with a feeler gauge in the piston ring groove.

    6. Permissible vertical play:

    • Rectangular compression ring (1): 0.04-0.08 mm
    • Tapered compression ring (2): 0.03-0.07 mm
    • Oil scraper ring (3): 0.03-0.13 mm