| IMPORTANT | Keep all of the valve train parts in order. Reinstall the valve train parts in their original locations and with the same mating surfaces as when removed. |
Scheme 137
- Remove the rocker arms, pushrods, and the pedestals. Refer to «VALVE ROCKER ARM AND PUSH ROD REPLACEMENT»(ref-187842-S03883063092005090800000) .
- Remove the lower intake manifold and gaskets. Refer to «INTAKE MANIFOLD REPLACEMENT-LOWER (L36)»(ref-187842-S30248086842005090800000) or «INTAKE MANIFOLD REPLACEMENT-LOWER (L67)»(ref-187842-S23751398682005090800000) .
- Remove the valve guide retainer bolts.
- Remove the valve guide retainer.
- Remove the valve lifter guides.
- Remove the valve lifters.
- Clean and inspect the valve lifters and guides. Refer to «VALVE LIFTERS AND GUIDES CLEANING AND INSPECTION»(ref-187842-S00188497322005090800000) .
Scheme 138
- Dip the valve lifters in prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.
- Install the valve lifters.
- Install the valve lifter guides.
- Install the valve guide retainer. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
- Install the valve guide retainer bolts. Tighten Tighten the valve guide retainer bolts to 30 N.m (22 lb ft).
- Install the lower intake manifold and gaskets. Refer to «INTAKE MANIFOLD REPLACEMENT-LOWER (L36)»(ref-187842-S30248086842005090800000) or «INTAKE MANIFOLD REPLACEMENT-LOWER (L67)»(ref-187842-S23751398682005090800000) .
- Install the valve rocker arms, pushrods, and the pedestals. Refer to «VALVE ROCKER ARM AND PUSH ROD REPLACEMENT»(ref-187842-S03883063092005090800000) .