Valve Rocker Assembly
REMOVAL
1. Remove the V-belts.
2. Remove the crank pulley.
3. Remove the timing belt cover.
4. Remove the timing belt.
5. Remove the cam sprocket.
6. Disconnect the PCV hose and remove the rocker cover.
7. Removal of valve rocker assembly
a Remove the bolts (a) through (h) in alphabetical sequence.
NOTE: Leave two or three threads of bolts (g) and (h) engaged in order to retain the valve rocker assembly.
b Remove the valve rocker assembly.
INSTALLATION
1. Install the valve rocker assembly.
a Temporarily tighten the bolts (a) through (d) equally in order as shown in the figure.
NOTE: Do not allow the valve rocker assembly to damage knock pins.
b Tighten the bolts (e) through (h) to specified torque.
c Tighten the bolts (a) through (d) to specified torque.
2. Adjust the valve clearance.
3. Install the rocker cover and rocker cover gasket, and then connect PCV hose.
NOTE: Use a new rocker cover gasket.
4. Install the cam sprocket.
5. Install the timing belt.
6. Install the timing belt cover.
7. Install the crank pulley.
8. Install the V-belts.
DISASSEMBLY
1. Remove the bolts which secure the rocker shaft.
2. Extract the rocker shaft. Remove the valve rocker arms, springs and shaft supports from rocker shaft.
NOTE: Keep all the removed parts in order for re-installing in their original positions.
3. Remove the nut and adjusting screw from valve rocker.
ASSEMBLY
1. Install the adjusting screw and nut to valve rocker.
2. Arrange the valve rocker arms, springs and shaft supports in assembly order, and then insert the valve rocker shaft.
Tightening torque (Shaft supports installing bolts): 5 Nm (0.5 kgf-m, 3.6 ft. lbs.)
NOTE: Valve rocker arms, rocker shaft and shaft supports have identification marks. Ensure the parts with same markings are properly assembled.
3. Install the valve rocker shaft securing bolts.
INSPECTION
VALVE ROCKER ARM AND ROCKER SHAFT
1. Measure the inner diameter of valve rocker arm and outer diameter of valve rocker shaft, and determine the difference (oil clearance) between the two values.
2. If the oil clearance exceeds the standard value, replace the valve rocker arm or shaft, whichever shows greater amount of wear.
Rocker arm inside diameter: 22.020 - 22.041 mm (0.8669 - 0.8678 inch)
Rocker shaft diameter: 21.987 - 22.000 mm (0.8656 - 0.8661 inch)
3. If the cam or valve contact surface of valve rocker arm is worn or dented excessively, replace the valve rocker arm.
4. Check that the valve rocker arm roller rotates smoothly. If not, replace the valve rocker arm.