Master23

To see the original article with images check it out here: Honda S2000 Rocker Arms. Garage411.com

ROCKER ARM TEST

Special Tools Required

• Gauge joint adapter 07LAK-PR3A101
• VTEC air adapter (2) 07ZAJ-PNAA100
• Air joint adapter 07ZAJ-PNAA3000
• Air pressure regulator 07AAJ-PNAA100

1. Remove the cylinder head cover.
2. Set the No. 1 piston at top dead center (TDC).
3. Move the secondary rocker arm for No. 1 cylinder. The secondary rocker arm should move independently of the mid rocker arm.

• If the secondary rocker arm does not move, remove the mid, primary, and secondary 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 mid, primary, and secondary rocker arms as an assembly.

4. Check that the air pressure on the shop air compressor gauge indicator is over 400 kPa (4 kgf/cm2 , 57 psi). Make sure no water in the air hose and air compressor tank.
5. Inspect the valve clearance.
6. Remove the No. 3 and No. 4 camshaft holder bolts, and install the VTEC air adapters finger-tight.
7. Install the gauge joint adapter to the inspection hole.
8. Connect the air joint adapter to the VTEC air adapters.
9. Connect the air pressure regulator to the air joint adapter.
10. With the specified air pressure applied and the piston at TDC, move the secondary rocker arm. The mid rocker arm, primary rocker arm, and secondary rocker arm should move together. If the three rocker arms do not move together, replace the rocker arms as a set.
11. Remove the special tools.
12. Tighten the camshaft holder bolts to 22 N.m (2.2 kgf.m, 16 lbf.ft).
13. Install the cylinder head cover.

ROCKER ARM AND SHAFT INSPECTION

1. Remove the dipstick, positive crankcase ventilation (PCV) hose and breather hose.
2. Remove the ignition coil cover, then remove the ignition coils.
3. Remove the cylinder head cover.
4. Loosen the rocker arm adjusting screws.
5. Remove the camshaft holders and camshafts.
6. Insert the bolts into the rocker shaft holder, then remove the rocker arm assembly.
7. Measure the diameter of the shaft at the first rocker location.
8. Zero the gauge to the shaft diameter.
9. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition.

• Rocker Arm-to-Shaft Clearance:
  o Standard (New): 0.021-0.041 mm (0.0008-0.0016 in.)
  o Service Limit: 0.07 mm (0.003 in.)

10. Repeat for all rocker arms and both shafts. If the clearance is over the limit, replace the rocker shaft and all overtolerance rocker arms. If any rocker arm needs replacement, replace all three rocker arms in that set (primary, mid, and secondary).
11. Inspect the rocker arm pistons. Push each piston manually. If it does not move smoothly, replace the rocker arm assembly.

• [*]
• [*]

To see the original article with images check it out here: Honda S2000 Rocker Arms. Garage411.com