Duramax LLY – ROCKER COVER INSTALLATION

1. Clean mounting flanges on both rocker covers and cylinder heads. Wipe flange sealing surfaces off with isopropyl alcohol to prepare surface for sealer application.

2. Apply RTV-type sealer to cover sealing surfaces.

3. Align and install covers on cylinder heads (Figure 2-182).

4. Install cover attaching bolts and studs and tighten to 13-25 lb-ft (18-34 N•m). Tighten fasteners starting at center and working toward each end.

5. Install all necessary fuel line and wire harness brackets on covers.

 

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