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Variable Cylinder Management Rocker Arm Test
Variable Cylinder Management Rocker Arm TestSpecial Tools Required
^ Air pressure regulator 07AAJ-PNAA100
1. Start the engine and let it run for 5 minutes, then turn the ignition switch OFF.
2. Remove the rear cylinder head cover.
3. Set the No. 1 piston at top dead center (TDC).
4. Push on the intake secondary rocker arm (C) for the No. 1 cylinder. Make sure that the intake primary rocker arm A and intake primary rocker arm B are mechanically connected by the pistons and that the intake secondary rocker arm does not move when pushed manually.
^ If the intake secondary rocker arm moves independently, remove the intake primary rocker arm A, intake primary locker arm B, and intake secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any intake rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and retest.
^ If the intake secondary rocker arm does not move, go to step 5.
5. Push on the exhaust secondary rocker arms (A) for the No. 1 cylinder. Make sure that the exhaust primary rocker arm (B) is mechanically connected by the pistons and that the exhaust secondary rocker arm does not move when pushed manually.
^ If the exhaust secondary rocker arm moves independently, remove the exhaust primary rocker arm and exhaust secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any exhaust rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and retest.
^ If the exhaust secondary rocker arm does not move, go to step 6.
6. Repeat steps 4 and 5 for No. 2 and No. 3 cylinders with each piston at TDC. When the rocker arms pass the test, go to step 7.
7. Check that the air pressure on the shop air compressor gauge indicates over 200 kPa (2.0 kgf/cm2, 29 psi).
8. Inspect the valve clearance.
9. Set the No. 1 piston at top dead center (TDC).
10. Install the adapter (10 x 1.0 mm) (A) to the inspection hole, then connect the air pressure regulator (B).
11. Loosen the valve on the regulator, and apply the specified air pressure.
Specified Air Pressure: 200 kPa (2.0 kgf/cm2, 28 psi)
12. With the specified air pressure applied, push on the intake secondary rocker arm (C) for the No. 1 cylinder. The intake secondary rocker arm should move independently of the intake primary rocker arm A and intake primary rocker arm B.
^ If the intake secondary rocker arm does not move independently, remove the intake primary rocker arm A, intake primary locker arm B, and intake secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly If any intake rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and retest.
^ If the intake secondary rocker arm moves freely, go to step 13.
13. With the specified air pressure applied, push on the exhaust secondary rocker arms (A) for the No. 1 cylinder. The exhaust secondary rocker arm should move independently of the exhaust primary rocker arm (B).
^ If the exhaust secondary rocker arm does not move independently, remove the exhaust primary rocker arm and exhaust secondary locker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any exhaust rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and retest.
^ If the exhaust secondary rocker arm moves freely, go to step 14.
14. Repeat step 12 and 13 for No. 2 and No. 3 cylinders with each piston at TDC. When the rocker arms pass the test, go to step 15.
15. Remove the air pressure regulator and adapter.
16. Install the rear cylinder head cover.