VTEC Rocker Arm Test
Special Tools Required
Image Description/Tool Number
757593.png Air Pressure Regulator 07AAJ-PNAA101
2358810.png VCM Air Adapter 070AJ-001A101
2. VTEC Rocker Arm - Test


1.
Rotate the crankshaft pulley clockwise. Make sure that the secondary rocker arm (A), the primary rocker arm (B), and the mid rocker arm (C) are separated and that the secondary rocker arm and the mid rocker arm should move independently:

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

2.
Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.08 kgf/cm2, 58.0 psi).







4.
Install the VCM air adapter to the inspection hole, then connect the air pressure regulator .

5.
Loosen the valve on the air pressure regulator, and apply the specified air pressure.

Specified Air Pressure
290 kPa (2.96 kgf/cm2, 42.1 psi)






6.
With the specified air pressure applied, rotate the crankshaft pulley clockwise. The secondary rocker arm (A) should move together with the mid rocker arm (B) and the primary rocker arm (C):

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

7.
Remove the air pressure regulator and the VCM air adapter.

3. All Removed Parts - Install

1.
Install the parts in the reverse order of removal.