Mazda Engine >> CAMSHAFT INSTALLATION ON 1995-2002 MAZDA 2.3L KJ ENGINES
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Mazda Engine >> CAMSHAFT INSTALLATION ON 1995-2002 MAZDA 2.3L KJ ENGINES
Camshaft Installation On
1995-2002 Mazda 2.3L KJ Engines
The AERA Technical Committee offers the following information regarding camshaft installation on 1995-2003 Mazda 2.3L KJ engines. If the camshafts are not installed correctly, engine damage may result.
When reinstalling the camshafts during engine installation, the original timing marks may have been worn away over time. If this is the case, mark and install the intake and exhaust camshafts using the procedure described below.
NOTE: The procedure for the left and right cylinder banks is different. Be sure to follow each procedure correctly.
Right Bank Cylinder Head (Figure 1)
Intake Camshaft Indexing: From the backside of the intake camshaft timing gear, locate the small stamped dot. Gear may need to be cleaned to locate the dot. Start with the tooth with the dot and count clockwise 31 teeth. Mark the 31st tooth with a scribe mark.
Exhaust Camshaft Indexing: From the backside of the exhaust camshaft timing gear, locate the small stamped dot. Gear may need to be cleaned to locate the dot. Start with the valley stamped with the dot and count clockwise 4 valleys. Mark the 4th valley with a scribe mark.
Installing Camshafts: Align the marked intake gear tooth with the marked exhaust gear valley. Install the camshafts into the cylinder head. Verify the alignment of the scribed marks.
Left Bank Cylinder Head (Figure 2)
Intake Camshaft Indexing: From the backside of the intake camshaft timing gear, locate the small stamped dot. Gear may need to be cleaned to locate the dot. Start with the tooth with the dot and count clockwise 1 tooth. Mark the 1st tooth with a scribe mark.
Exhaust Camshaft Indexing: From the backside of the exhaust camshaft timing gear, locate the small stamped dot. Gear may need to be cleaned to locate the dot. Mark the valley with a scribe mark.
Installing Camshafts: Align the marked intake gear tooth with the marked exhaust gear valley. Install the camshafts into the cylinder head. Verify the alignment of the scribed marks.
The AERA Technical Committee
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