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Home >> Saab >> 2004 >> 9-3 Linear, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Basic Engine >> Adjustment-Replacement >> Changing piston rings >> To fit

To fit

  1. Fit the oil scraper ring.
    IMPORTANT: Ensure that the spring openings of the upper and lower rings on the three-part oil scraper ring are not located in front of each other.
    Fig 1: Illustration For Step 1
    G03708086Courtesy of SAAB-SCANIA OF AMERICA, INC.
  2. Use a piston ring expander when fitting the rings onto the piston.
    Fig 2: Fitting Rings Onto Piston
    G03708087Courtesy of SAAB-SCANIA OF AMERICA, INC.
  3. The compression rings must be turned with the marking "TOP" facing upward.
    IMPORTANT: The lower compression ring is black and the upper one is silver.
  4. Oil the piston and ring before fitting. Turn the compression rings so that the rings' openings are displaced 180° from each other and aligned with the gudgeon pin ends.
  5. Oil the piston rings, bearings and cylinder.
  6. Fit the pistons using 83 95 113 PISTON FITTING TOOL  . The arrows on the pistons must point towards the timing chain.
    Fig 3: Illustration For Step 6
    G03708088Courtesy of SAAB-SCANIA OF AMERICA, INC.
  7. Raise the car.
  8. Fit the bearing caps with bearing shells. The outer bevelling on the connecting rod and bearing cap must butt up against each other.
    Fig 4: Identifying Bearing Caps
    G03708089Courtesy of SAAB-SCANIA OF AMERICA, INC.

    Tightening torque 25 Nm + 100° (18 lbf ft + 100°) 

    Fig 5: Illustration For Step 8
    G03708090Courtesy of SAAB-SCANIA OF AMERICA, INC.
  9. Clean the engine block and sump sealing surfaces. Remove any contaminants in the oil sump.
  10. Apply a 2 mm thick bead 83 95 691 Flange sealant to the oil sump sealing surface and to the oil strainer suction pipe's connection.
  11. Carefully fit the oil sump so that the sealant is not scraped off.

    Tightening torque, oil sump 22 Nm (16 lbf ft) 

    (11a) Tightening torque, bolts in gearbox 70 Nm (52 lbf ft) 

    Fig 6: Illustration For Step 11, 11a
    G03708091Courtesy of SAAB-SCANIA OF AMERICA, INC.
  12. Up to M04 inclusive:  Fit the front torque arm bolts to the oil sump and tighten the rear bolt.

    Tightening torque, front bolts 37 Nm (27 lbf ft) 

    Tightening torque, front bolts 70 Nm + 90° (52 lbf ft + 90°) 

    Fig 7: Illustration For Step 12-14
    G03708092Courtesy of SAAB-SCANIA OF AMERICA, INC.
  13. Fit the AC compressor lower fixing bolt.

    Tightening torque 24 Nm (18 lbf ft) 

  14. Plug in the oil pressure switch connector.
  15. Lower the car.
  16. Fit the dipstick pipe in the oil sump with a new O-ring, greased with 30 06 665 Vaseline.
  17. Place a jack with wood block under the oil sump and relieve the load from the right-hand engine pad. Remove the right-hand engine mounting.
    Fig 8: Illustration For Step 17
    G03708093Courtesy of SAAB-SCANIA OF AMERICA, INC.
  18. Fit CYLINDER HEAD  .
  19. Fill with engine oil.
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