Camshaft: Service and Repair
Camshaft ReplacementTools Required
^ J 44221 Camshaft Holding Tool
^ J 44222 Camshaft Sprocket Holding Tool
^ J 36660-A Torque/Angle Meter
Removal Procedure
1. Remove the camshaft cover.
2. Remove the intake and the exhaust camshaft sprocket bolts.
3. Install the J 44222 onto the cylinder head and adjust the horizontal bolts into the camshaft sprockets in order to maintain chain tension and keep from disturbing the timing chain components.
4. Carefully move the sprockets with the timing chain, off of the camshafts.
5. Remove the camshaft cap bolts.
Important: Place the camshaft caps in a rack to ensure the caps are installed in the same location from which they were removed.
6. Remove the camshaft caps and store.
7. Remove the camshafts.
Installation Procedure
1. Coat the camshaft journals, camshaft journal thrust face, and camshaft lobes with clean engine oil.
2. Install the intake and exhaust camshafts to their original positions.
3. Install the J 44221 with the camshaft flats up and the number 1 cylinder at top dead center.
Notice: Refer to Fastener Notice in Service Precautions.
Important: Install the camshaft caps onto their original locations. The camshaft caps are pin stamped for direction and numerical order.
4. Install the camshaft caps and bolts.
^ Tighten the camshaft cap bolts to 12 Nm (106 inch lbs.).
5. Remove the J 44221
6. Carefully move the sprockets back onto the camshafts and remove the J 44222.
7. Install the intake camshaft sprocket washer and bolt, and the exhaust camshaft actuator bolt.
^ Tighten the intake camshaft sprocket bolt the first pass to 20 Nm (15 ft. lbs.).
^ Use the J 36660-A to tighten the intake camshaft sprocket bolt the final pass an additional 100 degrees.
^ Tighten the exhaust camshaft actuator bolt the first pass to 25 Nm (18 ft. lbs.).
^ Use the J 36660-A to tighten the exhaust camshaft actuator bolt a final pass an additional 135 degrees.
8. Install the camshaft cover.