Question 1

How to replace the camshaft on Chevrolet Colorado?

Accepted Answer

The first step is to take off both the Camshaft cover and Camshaft position (CMP) sensor before the Camshaft replacement process. Rotate the Crankshaft clockwise until the #1 Piston is at top dead center (TDC) on the compression stroke. Secure j 44221 Camshaft holding tool behind the camshafts before you remove the intake and exhaust Camshaft sprocket bolts while keeping up proper tension with j 44222 Camshaft sprocket holding tool. Move the sprocket and Timing Chain from the camshafts onto the j 44222 tool. The j 44221 can be removed along with all Camshaft caps after you loosen the bolts in alternation until all valve spring pressure is gone. Cylinder heads require a removal of all camshafts. For installation, coat the Camshaft journals, thrust face, and lobes with clean engine oil, then install the j 44221 with the Camshaft flats up and the #1 Piston at tdc. The user should replace the intake and exhaust camshafts in their original configuration while checking that the marked slots on the Camshaft caps match their correct placement. Install the Camshaft caps together with bolts and follow even torque specifications to 12 n.m (106 lb in). Use a 25 mm (1 in) wrench on each hex of the camshafts to assist in aligning the sprockets before you carefully transfer the sprockets with Timing Chain from j 44222 to Camshaft positions. Install the new intake Camshaft sprocket bolt onto the Camshaft first then apply torque using the j 45059 angle meter which must reach 100 degrees past the initial 20 n.m (15 lb ft) torque value and then tighten the exhaust Camshaft actuator bolt to 25 n.m (18 lb ft) with an additional 135 degrees using this same tool. To finish the repair you must first discard j 44221 before placing the cmp sensor and then reinstall the Camshaft cover.

Question 2

How to replace the intake camshaft and lash adjuster on Chevrolet Malibu?

Accepted Answer

The first task in intake camshaft and valve lifter replacement requires removal of the intake camshaft position actuator. One turn of bolt removal at a time from the bearing caps will reduce the camshaft spring tension before you mark the caps for future reinstallation. Unfasten the bearing caps and their bolts before extracting the intake camshaft. Reinstallation of the roller followers and hydraulic adjusters requires proper organization. The next step involves removing camshaft roller followers together with hydraulic element lash adjusters from the mechanism. Insert the hydraulic element lash adjusters into their relevant Cylinder Head bores and lubricate them together with the valve tips using gm pn 12345501 (Canadian PN 992704) or equivalent product. The original placement of roller followers on the camshaft needs to be maintained during repairs; complete replacement of any camshaft mandates the exchange of related roller followers as well. Lubricate the camshaft roller followers that face the valve tips by using gm pn 12345501 (Canadian PN 992704) or equivalent product. Install the intake camshaft and follow it with gm pn 12345501 (Canadian PN 992704) or equivalent oil lubrication. Begin by installing the camshaft bearing caps while hand-tightening the cap bolts before properly torquing bearing caps to 10 n.m (89 lb in) total. Place the final component of intake camshaft position actuator.

Question 3

How to replace the camshaft on Chevrolet Tahoe?

Accepted Answer

The procedure for Camshaft replacement starts with radiator support removal then proceeding to extract valve lifters. The procedure entails taking out the Timing Chain as well as the Camshaft position actuator and solenoid valve. Remove the Camshaft retainer bolts (204) first together with retainer (203) with caution for the Camshaft bearings while all journals share the same diameter. You can install a bolt onto the Camshaft to serve as a rotational tool while removing the Camshaft from the engine block with utmost care. Perform an evaluation on both the Camshaft and its bearings following correct cleaning procedures. The replacement process for a Camshaft requires replacement of the valve lifters as well. A clean oil dipstick should be used to lubricate the Camshaft journals and bearings before slowly inserting the Camshaft into the engine block through use of the bolt hand holder. Initiate the bolt removal procedure from the Camshaft front section while ensuring the retaining element contains the necessary sealing gasket facing the engine block surface and remains free of foreign particles. Reinstall the Camshaft retainer (203) followed by its bolts (204) while torquing the first design hex head bolts to 25 nm (18 lb ft) in combination with the second design torx(R) head bolts to 15 nm (11 lb ft). Finish the process by reinstalling the Timing Chain and Camshaft position actuator and solenoid valve and the valve lifters and then mount the radiator support.

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