Removal and Replacement

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TIMING CHAIN REMOVAL / INSTALLATION - 4.0L









Removal Note

1. Remove the valve covers. See -- Valve Cover - RH Removal / Installation and -- Valve Cover - LH Removal / Installation.

2. Remove the fuel rail. See - Service and Repair.

3. Remove the engine front cover. See - Service and Repair.

4. Remove the thermostat housing. See - Service and Repair.

5. Remove all of the roller followers. See - Service and Repair.

6.
NOTE:You must retime the LH and RH camshafts when either camshaft is disturbed.Turn the crankshaft clockwise to position the No. 1 cylinder at top dead center (TDC).

7. Remove the LH hydraulic chain tensioner.






1. Remove the LH camshaft sprocket bolt.
a. Install the camshaft sprocket holding tool SST and the adapter SST.Tightening Torque10 Nm {1.0 kgf-m, 89 in-lbf}

b. Remove the LH camshaft sprocket bolt.






1. Using the crankshaft holding tool SST to prevent the crankshaft from turning, remove the jackshaft sprocket bolt.






1. Remove the bolts and the primary chain tensioner.






1. Remove the primary chain and sprockets as an assembly.






1. Remove the LH cassette upper bolt.






1. Remove the LH cassette lower bolt and the LH cassette.

Installation Note





1.
NOTE:The camshaft chain sprockets must be oriented correctly.Position the LH cassette.






1. Install the LH cassette lower bolt.Tightening Torque19 Nm {1.9 kgf-m, 14 ft-lbf}






1. Install the LH cassette upper bolt.Tightening Torque12 Nm {1.2 kgf-m, 9 ft-lbf}






1. Install the primary chain and sprockets as an assembly.






1. Install the primary chain tensioner and the bolts.Tightening Torque9 Nm {0.9 kgf-m, 80 in-lbf}






1. Using the crankshaft holding tool SST to prevent the crankshaft from turning, tighten the jackshaft sprocket bolt in 2 stages.Tightening Torque Stage 1: 45 Nm {4.6 kgf-m, 33 ft-lbf}Stage 2: Tighten an additional 90 degrees.

2. Loosely install the camshaft sprocket bolt.

3.
NOTE:You must retime the LH and RH camshafts when either camshaft is disturbed.
NOTE:Install the LH hydraulic chain tensioner during camshaft timing.
Retime the LH and RH camshafts. See - Procedures.

4. Install the camshaft roller followers. See - Service and Repair

5. Install the thermostat housing. See - Service and Repair.

6. Install the engine front cover. See - Service and Repair

7. Install the fuel rail. See - Service and Repair.

8. Install the valve covers. See -- Valve Cover - RH Removal / Installation and -- Valve Cover - LH Removal / Installation.