OEM 2006 Chevrolet Colorado Camshaft

2006 Chevrolet Colorado Camshaft Parts and Q&A

• Q: How to replace the camshaft on 2006 Chevrolet Colorado?

  A: The initial step is to remove the Camshaft cover while rotating the Crankshaft clockwise until the #1 Piston reaches top dead center (TDC) on compression stroke and parallel alignment of "delphi" on the exhaust Camshaft position actuator toward the Cylinder Head to cam cover mating surface. The Camshaft holding tool j 44221 serves as a rear Camshaft support for the next step of extracting the intake and exhaust Camshaft sprocket bolts which get discarded. The Camshaft sprocket holding tool j 44222 should be installed on the Cylinder Head where the horizontal bolts function to sustain chain tension across the Camshaft sprockets. Pass the Camshaft sprockets with Timing Chain towards the j 44222 installation method. Loosen and tighten the Camshaft cap bolts alternately while releasing valve spring tension and arrange the Camshaft caps on a rack for correct placements. After removing Camshaft caps with j 44221 you should extract camshafts out of the Cylinder Head and proceed with cleaning along with inspections. Clean engine oil should be used to coat Camshaft journals thrust face and lobes before placing j 44221 onto Camshaft flats while the #1 Piston remains at tdc. Install the intake to exhaust camshafts in their original positions with caution by aligning the markings on the Camshaft caps appropriately. Install the Camshaft caps but begin fixing their bolts with an even distribution to compress the valve springs before final torque application at 12 nm (106 inch lbs.). A 25 mm (1 inch) wrench should rotate the hex-shaped camshafts towards each other to check that the alignment pins connect properly. Move the Timing Chain equipped sprockets from j 44222 to camshafts before removing j 44222. Screw the new intake Camshaft sprocket bolt along with the new exhaust Camshaft actuator bolt into place before tightening the intake bolt to 20 nm (15 ft. Lbs.) and following the angle meter (J 45059) procedure to perform additional 100-degree rotation. Benchmark the exhaust Camshaft actuator bolt at 25 nm (18 ft. Lbs.) before proceeding with the angle meter (J 45059) method that requires a 135-degree rotation. Place the cmp sensor followed by reinstallation of the Camshaft cover after removing j 44221 from camshafts.