Rocker Arm Assembly: Testing and Inspection
VTEC Rocker Arm TestSpecial Tools Required
^ Air regulator 07AAJ-PNAA100
^ VTEC air adapter 07VAJ-P8A010A
^ VTEC air stopper 07VAJ-P8A020A
1. Remove the strut brace.
2. Remove the intake manifold cover (A) and ignition coil cover (B).
3. Remove the water bypass hoses (A). Disconnect the TCS control actuator connector (B) and TCS control valve angle sensor connector (C) from the TCS control valve assembly, then remove the bolt (D) securing the TCS control valve bracket (J32A2 engine (A/T)).
4. Remove the Evaporative Emission (EVAP) canister hose (A).
J32A1 engine, J32A2 engine (M/T)
J32A2 engine (A/T)
5. Remove the vacuum hose (B) and breather pipe (C). then remove the intake air duct (D).
6. Remove the throttle cable (A) and cruise control cable (B) by loosening the locknuts (C). then slipping the cable ends out of the accelerator linkage. Take care not to bend the cables when removing them. Always replace any kinked cable with a new one.
7. Remove the breather hose (A) and water bypass hose (B).
8. Remove the brake booster vacuum hose (A), vacuum hoses (B), and Positive Crankcase Ventilation (PCV) hose (C).
9. Remove the P/S hose clamp (A). Disconnect the Intake Manifold Runner Control (IMRC) actuator connector (B), then remove the IMRC actuator (C) (J32A2 engine).
10. Remove two bolts securing the wire harness holder.
11. Remove the engine wire harness connectors and wire harness clamps from the intake manifold.
^ Intake air temperature (I/T) sensor connector
^ Idle Air Control (IAC) valve connector
^ Throttle Position (TP) sensor connector
^ Manifold Absolute Pressure (MAP) sensor connector
12. Remove the upper cover (A), then remove the intake manifold (B).
13. Remove the cylinder head covers.
14. Set the No. 1 Piston at top dead center (TDC) (see step 14).
15. Push on the intake mid rocker arm (A) for the No. 1 cylinder. The mid rocker arm should move independently of the primary rocker arm (B) and secondary rocker arm (C).
^ If the intake mid rocker arm does not move, remove the mid, primary, and secondary intake rocker arms as an assembly, and check that the pistons in the mid and primary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary, mid and secondary rocker arms as an assembly, and retest.
^ If the mid rocker arm moves freely, no to step 16.
16. Repeat step 15 on the remaining intake mid rocker arms with each piston at TDC. When all the mid rocker arms pass the test, go to step 17.
17. Check that the air pressure on the shop air compressor gauge indicates over 690 kPa (7.0 kgf/cm2, 100 psi).
18. Inspect the valve clearance.
19. Cover the timing belt with a shop towel to protect the belt.
20. Remove the two end intake rocker shaft mounting bolts, then install and connect the special tools and an air pressure regulator with a 0 - 100 psi gauge (A) as shown.
21. Loosen the valve on the regulator, and apply the specified air pressure.
Specified Air Pressure: 440 - 540 kPa (4.5 - 5.5 kgf/cm2, 64 - 78 psi)
NOTE: If the synchronizing pistons A and B do not move after applying air pressure, move the primary or secondary rocker arm up and down manually.
22. Make sure that the intake primary rocker arm (A) and intake secondary rocker arm (B) are mechanically connected by the piston and that the mid rocker arm (C) does not move when pushed manually. If any intake mid rocker arm moves independently of the primary and secondary rocker arms, replace the rocker arms as a set.
23. Remove the tools.
24. Check for smooth operation of each lost motion assembly. Replace the lost motion assembly if it does not move smoothly.