OEM 2005 Chevrolet Cobalt Camshaft

2005 Chevrolet Cobalt Parts Questions & Experts Answers

• Q: How to replace the intake camshaft and lash adjuster on 2005 Chevrolet Cobalt?

  A: Begin intake camshaft and lifter replacement by first removing the camshaft cover as well as the upper Timing Chain Guide. The workspace now requires the sprocket holding tool (J 43655) for eliminating both intake and exhaust camshaft sprocket bolts while discarding them. Mark the camshaft sprockets position before moving them forward to know their precise installation locations. The replacement process starts by twisting each bearing cap bolt one turn until all spring forces are gone then you can remove the bearing caps together with the intake camshaft. Finish by taking out the camshaft roller followers alongside the hydraulic element lash adjusters. Installation requires lubricating the valve tips as you place the hydraulic element lash adjusters and camshaft roller followers onto their positions while properly aligning the marks on the aligning notches to the camshaft sprocket. Place the intake camshaft as well as bearing caps on the camshaft, follow a method of tightening bearing cap bolts with a 3-turn increment until set then torque it to 10 nm (89 inch lbs.). The rear intake camshaft bearing cap needs permatex anaerobic gasket maker (51813) applied as a 5 mm (0.197 inch) bead then rear intake camshaft bearing cap bolts get tightened to 25 nm (18 ft. Lbs.). After putting camshaft sprockets onto the camshafts, install new camshaft sprocket bolts loosely and remove the sprocket holding tool (J 43655) to torque sprocket bolts to 85 nm (63 ft. Lbs.) while completing 30 degrees of rotation. As the last step, install the upper Timing Chain Guide before tightening it to 10 nm (89 inch lbs.) and replace the camshaft cover.