LANCER 7G year 2009

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TIMING CHAIN ELONGATION VISUAL CHECK

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note When the timing chain elongates more than the specified length, the diagnosis code No. P0012, variable valve timing (VVT) advanced-angle value abnormal, is set. Unless the diagnosis code No. P0012, therefore, is output, the visual check is unnecessary.

note Unless the work using the following M.U.T-III is correctly carried out due to the malfunction of engine-ECU, carry out the check whether or not the diagnosis code exists. Storing the learning value regarding the amount of timing chain elongation before the engine-ECU replacement Writing the learning value into the new engine-ECU after the engine-ECU replacement

1.Remove all the ignition coils.

2.Remove the cylinder head cover.

3.Remove the upper chain guide.

caution Always rotate the crankshaft clockwise. 4.Rotating the crankshaft clockwise, align the timing mark of camshaft sprocket with the point on the upper plane of cylinder head shown in the illustration. As a result of this, the No.1 cylinder is positioned at the compression TDC.

5.Look at the inside of timing chain case with one eye in the direction of arrow shown in the illustration. Fix the visual line at the point where the top axis line of the chain elongation indicator at the front side of timing chain case is overlapped with that of the chain elongation indicator at the reverse side of timing chain case.

6.Check the end gear face of timing chain "A" cross section surface and the point of chain elongation indicator which is fixed in Step 5. When the end gear face of timing chain "A" is positioned at the left-hand side of chain elongation indicator, it is unnecessary to replace the timing chain because the timing chain is within the specified length. When the end gear face of timing chain "A" is positioned at the right-hand side of chain elongation indicator, it is necessary to replace the timing chain because the timing chain elongates more than the specified length. 7.Install the upper chain guide. 8. caution Completely remove all the old FIPG, which might be remaining among the components. Remove any liquid gasket remaining on the cylinder head cover, the timing chain case and the cylinder head. 9.Using white gasoline and so on, degrease the cylinder head cover, timing chain case and cylinder head.

caution The cylinder head cover should be installed within 3 minutes of applying liquid gasket. 10.Apply a 4 mm bead of liquid gasket as illustrated. Specified sealant: Three bond 1217G or equivalent

11.Installing the cylinder head cover, tighten the tightening bolt according to the following procedures. (1) Temporarily tighten the tightening bolt in the order shown in the illustration. Tightening torque: 3.0 ± 1.0 N·m (2) Tighten the tightening bolt to the specified torque in the order shown in the illustration. Specified torque: 5.5 ± 0.5 N·m 12.Install all the ignition coils. 13.Use the M.U.T.-III to select the timing chain maintenance. Initialize the learning value. Refer to GROUP 00, General - Precautions before service - Timing chain maintenance . note Carry out the initialization even if the amount of timing chain elongation is normal. As a result of this, it is necessary to replace the timing chain before the timing chain interferes with the other components when the next warning lamp illuminates or the diagnosis code No. P0012 is output.