GMC 24461834 Chain Assembly, Timing

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Unplug the cable from the negative battery terminal and facing TDC for number one cylinder, drain the engine oil. Remove drivebelt. Remove of drivebelt tensioner from front cover. Remove the engine front cover. Remove valve cover. Remove timing chain tensioner. Take off upper timing chain guide. Remove exhaust camshaft sprocket bolt. Undo adjustable timing chain guide's access bolt and remove fixed timing chain guide upper mounting bolt at the same time unscrew fixed timing chain guide upper mounting bolt through access hole with screwdriver located on lower camchain housing.Remove intake camshaft sprocket boltly unscrew it out through top of head;timing retainer about head.Invert cylinder block and slide out loose link.Install on camshaft exhaust camshaft sprocket screwing three bolts with specified torque.Install lower timing chain guide.Screw in intake camshaft sprocket for fixing purpose only.Instal uppr fixe timin hain gui desiged t supot upp cha.A wrench should be put on the intake camshaft hex and then tighten intake camshaft bolt.A wrench, placed onto exhaust cahmshat hex will help to tightenthe exhauscshat bo.Istall thathian tnserfosiic over91ding thrugh aperuare.Depending on application, this may be required.Install cylinder heads torquing each head bolts gradually in four steps.Apply small amount of RTV sealant to threads before replacing valve cover.Replace engine plastic covers.Reattach battery terminal wires and check for any leaks.

If you want to clear and inspect timing system components, start by disconnecting the negative battery terminal and removing the spark plugs, valve cover, oil pan, and drive belt. Remove the drive belt tensioner and engine front cover next before setting the No. 1 piston at TDC by lining up marks on the crankshaft sprocket with intake camshaft sprocket and exhaust camshaft sprocket. Remove timing chain tensioner, upper timing chain guide, adjustable timing chain guide. Then remove bolts on exhaust camshaft sprocket and intake camshaft sprocket discarding them while installing new ones for reassembly. Be careful when removing the timing chain through the top of cylinder head so as to avoid rotation of camshafts or crankshaft. Take out the timing chain drive sprocket and also remove the timing chain oiling nozzle from engine block. Every element should be checked for wear or damages and any that is in doubt replaced. Ensure that the crankshaft sprocket's timing mark is correctly positioned during installation while tightening a new bolt which secures an installation of an intake camshaft sprocket. Place back resetting "INT" end link on bright colored link at intake camshaft sprocket after lowering a timing in its place. A fixed link must be engaged onto crank shaft sprockets' times mark for adjustment chain guide to be mounted as well as a new bolted exhaust camshaft sprocket along with an upper one followed by an upper one too. Finally tighten all bolts according to torque values given for each of them. The suggested steps below are used in compressing a tensioner of a timing chain as it is installed into its place; apply RTV sealant to threads of a plug access to a timber guiding at a time plug access sealing application takes place/insertion is made; reinstall valve cover/engine front cover/ crank case refilled with fresh oil/attach battery/restart engine, check for leaks. The process should be handled by an expert because it can damage the engine in any error. Recheck tasks to ensure that timing marks are properly aligned before starting the engine.

If you want to clear and inspect timing system components, start by disconnecting the negative battery terminal and removing the spark plugs, valve cover, oil pan, and drive belt. Remove the drive belt tensioner and engine front cover next before setting the No. 1 piston at TDC by lining up marks on the crankshaft sprocket with intake camshaft sprocket and exhaust camshaft sprocket. Remove timing chain tensioner, upper timing chain guide, adjustable timing chain guide. Then remove bolts on exhaust camshaft sprocket and intake camshaft sprocket discarding them while installing new ones for reassembly. Be careful when removing the timing chain through the top of cylinder head so as to avoid rotation of camshafts or crankshaft. Take out the timing chain drive sprocket and also remove the timing chain oiling nozzle from engine block. Every element should be checked for wear or damages and any that is in doubt replaced. Ensure that the crankshaft sprocket's timing mark is correctly positioned during installation while tightening a new bolt which secures an installation of an intake camshaft sprocket. Place back resetting "INT" end link on bright colored link at intake camshaft sprocket after lowering a timing in its place. A fixed link must be engaged onto crank shaft sprockets' times mark for adjustment chain guide to be mounted as well as a new bolted exhaust camshaft sprocket along with an upper one followed by an upper one too. Finally tighten all bolts according to torque values given for each of them. The suggested steps below are used in compressing a tensioner of a timing chain as it is installed into its place; apply RTV sealant to threads of a plug access to a timber guiding at a time plug access sealing application takes place/insertion is made; reinstall valve cover/engine front cover/ crank case refilled with fresh oil/attach battery/restart engine, check for leaks. The process should be handled by an expert because it can damage the engine in any error. Recheck tasks to ensure that timing marks are properly aligned before starting the engine.

Unplug the cable from the negative battery terminal and facing TDC for number one cylinder, drain the engine oil. Remove drivebelt. Remove of drivebelt tensioner from front cover. Remove the engine front cover. Remove valve cover. Remove timing chain tensioner. Take off upper timing chain guide. Remove exhaust camshaft sprocket bolt. Undo adjustable timing chain guide's access bolt and remove fixed timing chain guide upper mounting bolt at the same time unscrew fixed timing chain guide upper mounting bolt through access hole with screwdriver located on lower camchain housing.Remove intake camshaft sprocket boltly unscrew it out through top of head;timing retainer about head.Invert cylinder block and slide out loose link.Install on camshaft exhaust camshaft sprocket screwing three bolts with specified torque.Install lower timing chain guide.Screw in intake camshaft sprocket for fixing purpose only.Instal uppr fixe timin hain gui desiged t supot upp cha.A wrench should be put on the intake camshaft hex and then tighten intake camshaft bolt.A wrench, placed onto exhaust cahmshat hex will help to tightenthe exhauscshat bo.Istall thathian tnserfosiic over91ding thrugh aperuare.Depending on application, this may be required.Install cylinder heads torquing each head bolts gradually in four steps.Apply small amount of RTV sealant to threads before replacing valve cover.Replace engine plastic covers.Reattach battery terminal wires and check for any leaks.

If you want to clear and inspect timing system components, start by disconnecting the negative battery terminal and removing the spark plugs, valve cover, oil pan, and drive belt. Remove the drive belt tensioner and engine front cover next before setting the No. 1 piston at TDC by lining up marks on the crankshaft sprocket with intake camshaft sprocket and exhaust camshaft sprocket. Remove timing chain tensioner, upper timing chain guide, adjustable timing chain guide. Then remove bolts on exhaust camshaft sprocket and intake camshaft sprocket discarding them while installing new ones for reassembly. Be careful when removing the timing chain through the top of cylinder head so as to avoid rotation of camshafts or crankshaft. Take out the timing chain drive sprocket and also remove the timing chain oiling nozzle from engine block. Every element should be checked for wear or damages and any that is in doubt replaced. Ensure that the crankshaft sprocket's timing mark is correctly positioned during installation while tightening a new bolt which secures an installation of an intake camshaft sprocket. Place back resetting "INT" end link on bright colored link at intake camshaft sprocket after lowering a timing in its place. A fixed link must be engaged onto crank shaft sprockets' times mark for adjustment chain guide to be mounted as well as a new bolted exhaust camshaft sprocket along with an upper one followed by an upper one too. Finally tighten all bolts according to torque values given for each of them. The suggested steps below are used in compressing a tensioner of a timing chain as it is installed into its place; apply RTV sealant to threads of a plug access to a timber guiding at a time plug access sealing application takes place/insertion is made; reinstall valve cover/engine front cover/ crank case refilled with fresh oil/attach battery/restart engine, check for leaks. The process should be handled by an expert because it can damage the engine in any error. Recheck tasks to ensure that timing marks are properly aligned before starting the engine.

Disconnect the cable from the negative battery terminal and remove the spark plugs. Remove the valve cover and, using a wrench on the flats of the intake camshaft, rotate the engine clockwise to 60 degrees before TDC, achieving this when the diamond-shaped spot on the intake sprocket is at the 12 o'clock position. Drain the engine oil and remove the drivebelt along with the drivebelt tensioner from the front cover. Remove the engine front cover and the valve cover again, followed by the timing chain tensioner and the upper timing chain guide. Remove the exhaust camshaft sprocket bolt, ensuring to discard the bolt and install a new one upon reassembly. Remove the adjustable timing chain guide and unscrew the access plug to remove the fixed timing chain guide's upper mounting bolt, then remove the lower mounting bolt and lift the guide from the engine block. Remove the intake camshaft sprocket bolt, discarding it as well, and carefully take out the timing chain and intake camshaft sprocket. Remove the timing chain drive sprocket and slide the timing chain oiling nozzle off the engine block. Clean all parts with solvent and dry with compressed air, inspecting the chain tensioner, timing chain guides, timing chain, and crankshaft and camshaft sprockets for wear or damage, replacing any questionable components. Before installing the timing chain, ensure the timing mark on the crankshaft sprocket points to the 5 o'clock position, then install the intake camshaft sprocket with a new bolt, tightening it lightly. Lower the timing chain from the top, ensuring it drops around both sides of the cylinder block bosses, aligning the bright colored link with the INT designation on the camshaft sprocket. Drape the timing chain over the crankshaft sprocket, engaging the plated link with the timing mark. Install the adjustable timing chain guide and tighten the bolts, then install the exhaust camshaft sprocket with a new bolt, ensuring the plated link aligns with the EXH designation. Tighten the exhaust camshaft sprocket bolt lightly, followed by the installation of the fixed and upper timing chain guides, tightening their bolts. Hold the intake and exhaust camshafts with a wrench to prevent turning while tightening their respective bolts. Install the timing chain tensioner in its compressed state, ensuring it measures 2.83 inches from end to end, and install the timing chain oiling nozzle, tightening the bolt. Apply RTV sealant to the threads and install the timing chain guide access plug, tightening the bolt. Install the valve cover and engine front cover, then complete the installation in reverse order of removal, installing a new oil filter and refilling the crankcase with oil. Reconnect the battery, run the engine, and check for leaks.

Next, take out the thermostat and the water pump pulley, followed by the crankshaft pulley.

Remove all traces of old gasket material and sealant from the cover and engine block.

Begin by disconnecting the negative battery cable, draining the oil, and removing the oil filter and spark plugs to facilitate engine rotation.

Rotate the engine clockwise to position the No. 1 piston at TDC (Top Dead Center) on the exhaust stroke, ensuring the keyway and marks on the camshaft sprockets are correctly aligned.

Before starting the engine, rotate the crankshaft by hand through at least two full revolutions, checking for resistance.

The timing system is complex, and severe engine damage can occur if mistakes are made. Therefore, this procedure should only be attempted by those with significant experience in such repairs. If unsure, consulting an expert is advised.

Remove the lower drivebelt idler pulley, the oil pan, the left drivebelt idler pulley, and the engine mount bracket from the top of the timing chain cover.

This procedure requires three special tools to lock the camshafts in position, which should be obtained beforehand.

Inspect the timing chain cover for damage, clean all components, and check for wear or damage on the guides and sprockets.

Install the timing chain oiling nozzle, apply RTV sealant to the access plug, and rotate the crankshaft again to check for resistance.