Rocker Arm Assembly: Testing and Inspection

VTEC Rocker Arm Test





Removal

1. Engine Cover





1. Remove the engine cover.

2. Ignition Coil





1. Remove the ignition coils.

3. Spark Plug





1. Remove the spark plugs.

4. Cylinder Head Cover Peripheral Assembly





1. Disconnect the connecters (A).

2. Remove the harness holders (B).

5. Alternator Cable - Move





1. Remove the harness clamp (A).

6. Cylinder Head Cover and/or Packing





1. Remove the dipstick (A).

2. Disconnect the breather hose (B).





3. Remove the cylinder head cover.

Test

1. VTEC Rocker Arm Test





1. Rotate the crankshaft pulley clockwise. Make sure that intake secondary rocker arm A and intake secondary rocker arm B are separated and that intake secondary rocker arm A and intake secondary rocker arm B should move independently:

* If intake secondary rocker arm A and intake secondary rocker arm B move together, remove the secondary rocker arms as an assembly, then check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary and the secondary rocker arms as an assembly, then retest.
* If intake secondary rocker arm A moves independently, go to step 2.

2. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm2, 57 psi).





3. Set the No. 1 piston at top dead center (TDC). The "UP" mark (A) on the camshaft sprocket should be at the top, and the TDC grooves (B) on the camshaft sprocket should line up with the top edge of the head.

4. Select the correct feeler gauge for the valve clearance you are going to check.
















5. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem on the No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag.





6. If you feel too much or too little drag, loosen the locknut, and turn the adjusting screw (A) until the drag on the feeler gauge is correct.

7. Tighten the locknut to the specified torque, and recheck the clearance. Repeat the adjustment if necessary.












8. Rotate the crankshaft clockwise. Align the No. 3 piston TDC groove (A) on the camshaft sprocket with the top edge of the head.

9. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.





10. Rotate the crankshaft clockwise. Align the No. 4 piston TDC groove (A) on the camshaft sprocket with the top edge of the head.

11. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.





12. Rotate the crankshaft clockwise. Align the No. 2 piston TDC groove (A) on the camshaft sprocket with the top edge of the head.

13. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.





14. Install the VCM air adapter (A) to the inspection hole, then connect the air pressure regulator (B).

15. Loosen the valve on the air pressure regulator, and apply the specified air pressure.












16. With the specified air pressure applied, rotate the crankshaft pulley clockwise. Intake secondary rocker arm A should move together with intake secondary rocker arm B:

* If intake secondary rocker arm A does and intake secondary rocker arm B move independently, remove the secondary rocker arms as an assembly, and check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary and the secondary rocker arms as an assembly, then retest.
* If intake secondary rocker arm A and secondary rocker arm B move together, go to step 7.

17. Remove the air pressure regulator and the VCM air adapter.

Installation

1. Cylinder Head Cover and/or Packing





1. Thoroughly clean the head cover gasket and the groove.

NOTE: Check and, if necessary, replace the head cover gasket.

2. Install the head cover gasket (A) in the groove of the cylinder head cover (B).

3. Make sure the head cover gasket is seated securely.

4. Clean the head cover contacting surfaces with a shop towel.





5. Remove the old liquid gasket from the top edge matting surfaces of the oil pump (A) and cylinder head (B).

6. Apply liquid gasket (P/N 08718-0004 or 08718-0009) to the chain case contact areas. Install the component within 5 minutes of applying the liquid gasket.

NOTE:
* Apply a 5 mm (0.20 in) diameter bead of liquid gasket to the mating surfaces (C).
* If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.





7. Install the cylinder head cover.

8. Tighten the bolts in two steps. In the final step, torque all bolts in sequence to 10 Nm (1.0 kgfm, 7 lbfft).

NOTE:
* Wait at least 30 minutes before filling the engine with oil.
* Do not run the engine for at least 3 hours after installing the head cover.





9. Connect the breather hose (A).

10. Install the dipstick (B).

2. Alternator Cable - Move





1. Install the harness clamp (A).

3. Cylinder Head Cover Peripheral Assembly





1. Install the harness holders (A).

2. Connect the connecters (B).

4. Spark Plug





1. Apply a small amount of anti-seize compound to the plug threads, and screw the plugs into the cylinder head, finger tight, then tighten the plugs to the specified torque.








5. Ignition Coil





1. Install the ignition coils.

6. Engine Cover





1. Install the engine cover.