Adjustment
- Turn engine clockwise until camshaft lobe of valve requiring adjustment is pointing straight up. Remove appropriate camshaft cap bolts for valves requiring adjustment as indicated in illustration. (Scheme 3) No. 1 - Right cylinder head exhaust valve. No. 2 - Right cylinder head intake valve. No. 3 - Left cylinder head exhaust valve. No. 4 - Left cylinder head intake valve.
- Install Tappet Holder (49-T012-0A0), with body toward center of cylinder head, to camshaft caps where bolts were removed. Tighten tappet holder bolts to 99-125 INCH lbs. (11.3-14.2 N.m). Align marks on shaft and clamp of tappet holder. Tighten shaft holder clamp bolts to secure shaft after alignment.
- Rotate notch in tappet so small screwdriver can be inserted. Position tappet holder body over tappet that requires shim replacement. Tighten holder body to shaft. Tighten holder bolt to compress tappet.
- Using small screwdriver, pry shim from tappet. Using magnet, remove shim. Measure shim. Change to appropriate shim thickness to meet valve clearance specification.
- Loosen bolt compressing tappet. Remove tappet holder assembly. Reinstall camshaft cap bolts and tighten to specifications. See «TORQUE SPECIFICATIONS»(ref-3917-S38585952592000052500000). Recheck valve clearance. Install valve cover with NEW gasket. Install intake manifold. See «INTAKE MANIFOLD»(ref-3917-S18799569532000052500000) under REMOVAL & INSTALLATION.
Scheme 2
Scheme 3
Note. Before installing valve cover, apply sealant on cylinder head and valve cover at designated areas. see scheme 15 Tighten valve cover bolts to specification in sequence. see scheme 16