Chrysler 4792353 Belt-Timing

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This engine design is an "interference" engine, so if the timing belt breaks, there will be damage to the valves and possibly the pistons, requiring removal of the cylinder heads. It is recommended to replace the water pump along with the timing belt, as it is driven by the belt. To begin, disconnect the battery cable. Remove the cooling fan assembly and accessory drivebelt. Then, take off the valve covers and loosen the rocker arm shaft bolts. Raise the vehicle and support it on jackstands. Remove the crankshaft pulley and drivebelt tensioner. Next, remove the power steering pump mounting bolts and position the pump to the side without disconnecting the fluid lines. Remove the lower and upper timing belt covers from the cylinder heads, marking the direction of rotation on the belt if it will be reinstalled. Temporarily install the crankshaft pulley bolt and align the timing marks on the crankshaft and camshaft sprockets. Unbolt the timing belt tensioner and remove the belt. Slowly compress the tensioner in a vise until a drill bit or Allen wrench can be inserted to lock it in place. Make sure all timing marks are still aligned and start installing the new belt at the crankshaft pulley, moving counterclockwise up to the left camshaft sprocket. Keep tension on the belt as it is fed under the water pump pulley, over the right camshaft sprocket, and past the tensioner. If reusing the old belt, ensure the directional mark made earlier is pointing in the correct direction. Hold the tensioner pulley against the belt and install the tensioner. Remove the Allen key or drill bit from the tensioner to allow it to tension the pulley on the belt. Tighten the rocker arm shaft bolts in the proper sequence. Rotate the crankshaft pulley through two complete revolutions to check that the timing marks remain aligned. If not, repeat the belt installation process. The rest of the installation is the reverse of removal. Start the engine and check for leaks. Note that noise may be present upon initial start up due to air entering the timing chain tensioner. If this occurs, raise the idle to 1,600 - 2,000 rpm for ten minutes to purge the air from the tensioner. This noise should last no longer than 15 minutes after initial start up.

This engine design is an "interference" engine, so if the timing belt breaks, there will be damage to the valves and possibly the pistons, requiring removal of the cylinder heads. It is recommended to replace the water pump along with the timing belt, as it is driven by the belt. To begin, disconnect the battery cable. Remove the cooling fan assembly and accessory drivebelt. Then, take off the valve covers and loosen the rocker arm shaft bolts. Raise the vehicle and support it on jackstands. Remove the crankshaft pulley and drivebelt tensioner. Next, remove the power steering pump mounting bolts and position the pump to the side without disconnecting the fluid lines. Remove the lower and upper timing belt covers from the cylinder heads, marking the direction of rotation on the belt if it will be reinstalled. Temporarily install the crankshaft pulley bolt and align the timing marks on the crankshaft and camshaft sprockets. Unbolt the timing belt tensioner and remove the belt. Slowly compress the tensioner in a vise until a drill bit or Allen wrench can be inserted to lock it in place. Make sure all timing marks are still aligned and start installing the new belt at the crankshaft pulley, moving counterclockwise up to the left camshaft sprocket. Keep tension on the belt as it is fed under the water pump pulley, over the right camshaft sprocket, and past the tensioner. If reusing the old belt, ensure the directional mark made earlier is pointing in the correct direction. Hold the tensioner pulley against the belt and install the tensioner. Remove the Allen key or drill bit from the tensioner to allow it to tension the pulley on the belt. Tighten the rocker arm shaft bolts in the proper sequence. Rotate the crankshaft pulley through two complete revolutions to check that the timing marks remain aligned. If not, repeat the belt installation process. The rest of the installation is the reverse of removal. Start the engine and check for leaks. Note that noise may be present upon initial start up due to air entering the timing chain tensioner. If this occurs, raise the idle to 1,600 - 2,000 rpm for ten minutes to purge the air from the tensioner. This noise should last no longer than 15 minutes after initial start up.

Because this is an "interference" engine design, if the timing belt has broken there will be damage to the valves (and possibly the pistons) and will require removal of the cylinder heads. It is recommended that the water pump be replaced at the same time as the belt due to the work necessary to access the timing belt and the fact that the water pump is driven by it. The factory recommends replacing the timing belt at 100,000 miles. Begin by disconnecting the cable from the negative terminal of the battery. Remove the cooling fan assembly and the accessory drivebelt. Next, remove the valve covers and loosen the rocker arm shaft bolts. Raise the vehicle and support it securely on jackstands, then remove the crankshaft pulley and the drivebelt tensioner. Remove the power steering pump mounting bolts and position the power steering pump off to the side without disconnecting the fluid lines. Take off the lower and upper timing belt covers from the cylinder heads, marking the direction of rotation on the belt with white paint if it is to be reinstalled. Temporarily install the crankshaft pulley bolt and turn the crankshaft to align the timing marks on the crankshaft and camshaft sprockets, ensuring the crankshaft sprocket arrow lines up with the TDC indicator on the oil pump cover and the camshaft sprocket marks align with the marks on the rear covers. Unbolt the timing belt tensioner and remove the belt. Slowly compress the timing belt tensioner in a vise until a drill bit or Allen wrench can be inserted through the hole to lock it in place, allowing a total bleed down time of approximately four to five minutes without forcing it. With all timing marks still aligned, install the new belt at the crankshaft pulley, proceeding counterclockwise to the left camshaft sprocket, keeping tension on the belt as it is fed under the water pump pulley, over the right camshaft sprocket, and past the tensioner. If reusing the old timing belt, ensure the directional mark is pointing correctly. Hold the tensioner pulley against the belt and install the tensioner, tightening the tensioner bolts to the specified torque. Remove the Allen key or drill bit from the tensioner to allow it to tension the pulley on the belt, then tighten the rocker arm shaft bolts in the proper sequence to the specified torque. Rotate the crankshaft pulley through two complete revolutions to check that the timing marks remain aligned; if not, repeat the belt installation process. The remainder of the installation follows the reverse order of removal. Start the engine and check for leaks, noting that noise may be present upon initial startup due to air entering the timing chain tensioner; if this occurs, raise the idle to 1,600 - 2,000 rpm for ten minutes to purge the air from the tensioner, with the noise lasting no longer than 15 minutes after initial startup.

This engine design is an "interference" engine, so if the timing belt breaks, there will be damage to the valves and possibly the pistons, requiring removal of the cylinder heads. It is recommended to replace the water pump along with the timing belt, as it is driven by the belt. To begin, disconnect the battery cable. Remove the cooling fan assembly and accessory drivebelt. Then, take off the valve covers and loosen the rocker arm shaft bolts. Raise the vehicle and support it on jackstands. Remove the crankshaft pulley and drivebelt tensioner. Next, remove the power steering pump mounting bolts and position the pump to the side without disconnecting the fluid lines. Remove the lower and upper timing belt covers from the cylinder heads, marking the direction of rotation on the belt if it will be reinstalled. Temporarily install the crankshaft pulley bolt and align the timing marks on the crankshaft and camshaft sprockets. Unbolt the timing belt tensioner and remove the belt. Slowly compress the tensioner in a vise until a drill bit or Allen wrench can be inserted to lock it in place. Make sure all timing marks are still aligned and start installing the new belt at the crankshaft pulley, moving counterclockwise up to the left camshaft sprocket. Keep tension on the belt as it is fed under the water pump pulley, over the right camshaft sprocket, and past the tensioner. If reusing the old belt, ensure the directional mark made earlier is pointing in the correct direction. Hold the tensioner pulley against the belt and install the tensioner. Remove the Allen key or drill bit from the tensioner to allow it to tension the pulley on the belt. Tighten the rocker arm shaft bolts in the proper sequence. Rotate the crankshaft pulley through two complete revolutions to check that the timing marks remain aligned. If not, repeat the belt installation process. The rest of the installation is the reverse of removal. Start the engine and check for leaks. Note that noise may be present upon initial start up due to air entering the timing chain tensioner. If this occurs, raise the idle to 1,600 - 2,000 rpm for ten minutes to purge the air from the tensioner. This noise should last no longer than 15 minutes after initial start up.

Rotate the crankshaft pulley through two complete revolutions to ensure the timing marks remain aligned; if not, repeat the installation process.

Temporarily install the crankshaft pulley bolt and turn the crankshaft to align the timing marks on the crankshaft and camshaft sprockets, ensuring the crankshaft sprocket arrow aligns with the TDC indicator and the camshaft sprocket marks align with the rear cover marks.

Remove the drivebelt for the air conditioning compressor and the serpentine belt for the alternator and power steering pump.

Loosen the center bolt to release tension from the timing belt and remove it along with the tensioner.