Secondary Camshaft Drive Chain Replacement (Front)
Removal Procedure^ Tools Required
- J42038 Camshaft Holding Fixture
- J42042 Timing Chain/Sprocket Holding Fixture
1. Partially drain the cooling system. Refer to Draining and Filling Cooling System in Cooling System.
2. Disconnect the thermostat housing for J42042 access. Refer to Thermostat Replacement in Cooling System.
3. Remove the left (front) camshaft cover. Refer to Camshaft Cover Replacement (Front) or Camshaft Cover Replacement (Rear).
4. Install the J42038 on to the left (front) camshafts.
5. Remove the camshaft sprocket bolts.
6. Install the J42042 on to the left (front) cylinder head.
7. Evenly slide the secondary drive chain and camshaft sprockets off the camshafts on to the J42042.
8. Inspect the secondary drive chain tensioner.
Installation Procedure
^ Tools Required
- J36660-A Electronic Torque Angle Meter
- J42038 Camshaft Holding Fixture
- J42042 Timing Chain/Sprocket Holding Fixture
1. Install the secondary timing chain. Align the drive pins as shown.
Align the exhaust sprocket drive pin (1) between the two darkened links (2).
Align the intake sprocket drive pin (4) with the single darkened link (3).
2. Slide the intake and exhaust camshaft sprockets off of the J42042 and onto their respective camshafts and align the drive pins (1,4) in the camshafts. Ensure the chain is properly aligned on the drive chain tensioner.
3. Remove the J42042 from the left (front) cylinder head.
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the intake camshaft sprocket bolt and exhaust camshaft sprocket bolt.
4.1. Tighten the camshaft sprocket bolts to 25 Nm (18 ft. lbs.).
4.2. Use the J36660-A in order to tighten the camshaft sprocket bolts an additional 45 degrees.
5. Remove the J42038 from the left (front) camshafts.
6. Install the left (front) camshaft cover. Refer to Camshaft Cover Replacement (Front) or Camshaft Cover Replacement (Rear).
7. Install the thermostat housing. Refer to Thermostat Replacement in Cooling System.
8. Fill the cooling system with engine coolant. Refer to Draining and Filling Cooling System in Cooling System.