- Remove the knock sensor oil seals (1) from the valley cover (2).
- Remove the bolts (1), baffle cover (2), and baffle (3) from the valley cover (4) - LS6.
- Clean the valley cover components in solvent.
- Dry the components with compressed air.
- Inspect the gasket sealing surfaces for excessive scratches or gouging.
- Inspect the oil seal bores for excessive scratching or gouging.
- Inspect the ventilation tube for a loose fit or restrictions - LS6.
- Install the baffle (3), baffle cover (2) and bolts (1) to the valley cover (4) - LS6.
Important: Do not use the valley cover knock sensor oil seals again. Install NEW oil seals during assembly.
Caution: Wear safety glasses in order to avoid eye damage.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the baffle cover bolts to 5 N·m (44 lb in).
