Ford 1S7Z-6256-AA Camshaft Sprocket

Because of the confined space, it is very difficult to undertake this process with the engine still installed and if a lot of work is needed then it may be advisable to remove the engine in the first instance. Timing is quite complex, and an error in it can cause significant levels of damage to the car engine; thus, it should only be done by professionals or else the expert should be consulted in cases of doubt. Firstly, you would have to take away the timing chain cover and then ease out the crankshaft position sensor trigger wheel off the crankshaft but ensure that you mark the pulse wheel to get a perfect position for a replacement. Take off the spark plugs, then apply the crankshaft with the retaining bolt and rotate the crank to the TDC using both the index marks marked on the camshaft sprockets with the keyway located at 11 o clock position. That is, if the marks are not lined up, the crankshaft should be turned a full turn before rechecking. There it is important to rotate the crank shaft in an anticlockwise direction only to prevent stretching of timing chains. After that, ensure proper alignment of both covers and then, unbolt the rear timing chain tensioner and the tensioner arm while putting numbered marks on those bolts which are supposed to be used again. To do this, first, remove the rear timing chain from the contact with the sprockets and take out the rear chain guide and ultimately move the sprocket from the crankshaft vicinity. Turn the crankshaft 600 ccw to make the camshafts lie in the neutral position, then extract the front timing chain tensioner and the associated arm, the front timing chain off the sprockets, and, finally, the front chain guide. Wash all components diligently and the chain tensioners, guides and chains and check for signs of wear or damage and replace if necessary. However, with the engine off, try to turn the crankshaft at least two complete revolutions by hand before igniting the engine and ensuring there is extra tightness that can be a major issue. For the timing chain tensioners, compress them then lock into position; Introduce the crank sprocket for the front timing chain in which the key way must face 11 o clock position. The index marks on the camshaft sprockets must be aligned and then place the front timing chain guide, then the front timing chain, the colored links of the chain must be properly aligned. Then bolt in the front tensioner arm and the tensioner assembly into its rightful place where it must fit tightly. Perform the same process as the front timing chain, to make sure the rear timing chain and its assembly is also in the right position and fixed tightly. If there are any locking pins still in the tensioners, rotate the crankshaft back to '11 o'clock' and check the timing marks. Set the crankshaft position sensor pulse wheel in its correct position and manually turn the engine to look for signs of bind up. Last of all when all parts are reconnected, fill the crankcase and other system with the correct fluids, reconnecting the battery, and start the engine then check for any sign of leakage while allowing the Powertrain Control Module learn the correct idle and fuel trim strategy for the best performance.

In order to displace the camshaft sprockets, let the first detract the timing chain and likewise the camshaft alignment tool in case it is fitted. With a wrench apply it on the hexagonal part which is at the camshaft to make it fixed while by turning the camshaft sprocket bolt which is located just next to the second lobe of the front lobe. It is necessary to discharge but to mark all camshaft sprockets for the subsequent reassembly. For installation, replace the camshaft sprockets on the original camshafts as well as loosely install the sprocket bolts. Install the left chain guide if it was removed next was the timing chain and the right chain guide. This is followed by the fitting of the timing chain tensioner, tightening of the tensioner to the recommended torque level, and then the removal of a pin to make the tensioner to interact with the chain guide. Insert the camshaft alignment tool back in place and fasten the camshaft sprocket bolt to the required torque with standing the camshafts by applying the wrench, so do not depend solely the alignment tool will lead to damage. Next the oil cooler bolted to the front of the engine can be fitted into this part Now the engine front cover can be fitted. The crankshaft sprocket which bolts to the oil pump drive sprocket can be detached from the crankshaft when the oil pump drive chain is removed. In particular, only factory parts should be installed on the crankshaft sprocket to replace the washers on both sides, otherwise there can be severe damage to the engine.

It is only advisable to remove the tensioner as a step that goes hand in hand with the timing belt change, in this way, once the belt tension has been disrupted, the valve timing is correctly realigned. There is tensioner to be removed and checked and many professionals will advice that the tensioner assemblies be replaced as a whole whenever the timing belt is to be replaced. The only special operation, which is required after removing the old tensioner is the installation of the new tensioner. In the case of the camshaft and crankshaft sprockets, removal of any of the sprockets means that the belt tension has to be released and in the process the whole timing belt of the vehicle must be replaced to ensure correct the required valve timing. In the case of its removal, camshaft sprockets can be released from the place with the help of their retaining bolts once the timing belt is off; it is advisable to take some time and label the sprockets for orientation. The crankshaft sprocket can be pulled off by pulling on this bolt, recommended to remove the crankshaft pulley and timing belt with FRONT marking on the sprocket and paying attention to the installation direction of the thrust washer. The sprockets need to be inspected and installation process is the reversal of the removal process with tensioning of the timing belt. For the timing belt guide pulleys the upper guide pulley, one can get access by removing the upper and middle covers while the lower guide pulley, (for early models) will need access from the lower cover. The guide pulley bolt should be unbolted, and a lot of precaution is needed in order not to discard the timing belt from the sprockets. The condition of the pulley(s) should be inspected and many mechanics also suggest the guide pulley assembly should be replaced when doing a timing belt replacement. If the pulley bolts are removed then installation is the procedure followed whereby the bolts are tightened until they get to the correct torque setting.

To take off the camshaft sprockets, turn the timing chain out off place, and if it is engaged, then turn the camshaft alignment tool out off place. Screw a wrench on the hexagonal part of the camshaft to immobilise it as the other hand turns the camshaft sprocket bolt more especially at the part that splits into hexagonal after the second cam lobe from the front. Take off as well as tag all the camshaft sprockets so that they may be re-fixed accurately. For installation, put back the camshaft sprockets to their respective camshafts and loosely fit the sprocket bolts. If removed reinstall the left chain guide, then the timing chain, then the right chain guide. Maintain the tensioner and fasten it tightly to the torque setting after which you remove the pin to connect the chain guide. Torque the camshaft sprocket bolts, while holding the camshafts with another wrench, do not lean on the camshaft alignment tool as it might get damaged. Lastly the engine front cover can be provisionally fitted. On the crankshaft sprocket, the oil pump drive sprocket is incorporated and the crankshaft sprocket can be easily disconnected from the crankshaft once all the chains are removed, in this case the oil pump drive chain. The crankshaft sprocket also has two washers, and when changing them, it is recommended to use genuine factory parts to avoid severe damage to the engine.

Because of the confined space, it is very difficult to undertake this process with the engine still installed and if a lot of work is needed then it may be advisable to remove the engine in the first instance. Timing is quite complex, and an error in it can cause significant levels of damage to the car engine; thus, it should only be done by professionals or else the expert should be consulted in cases of doubt. Firstly, you would have to take away the timing chain cover and then ease out the crankshaft position sensor trigger wheel off the crankshaft but ensure that you mark the pulse wheel to get a perfect position for a replacement. Take off the spark plugs, then apply the crankshaft with the retaining bolt and rotate the crank to the TDC using both the index marks marked on the camshaft sprockets with the keyway located at 11 o clock position. That is, if the marks are not lined up, the crankshaft should be turned a full turn before rechecking. There it is important to rotate the crank shaft in an anticlockwise direction only to prevent stretching of timing chains. After that, ensure proper alignment of both covers and then, unbolt the rear timing chain tensioner and the tensioner arm while putting numbered marks on those bolts which are supposed to be used again. To do this, first, remove the rear timing chain from the contact with the sprockets and take out the rear chain guide and ultimately move the sprocket from the crankshaft vicinity. Turn the crankshaft 600 ccw to make the camshafts lie in the neutral position, then extract the front timing chain tensioner and the associated arm, the front timing chain off the sprockets, and, finally, the front chain guide. Wash all components diligently and the chain tensioners, guides and chains and check for signs of wear or damage and replace if necessary. However, with the engine off, try to turn the crankshaft at least two complete revolutions by hand before igniting the engine and ensuring there is extra tightness that can be a major issue. For the timing chain tensioners, compress them then lock into position; Introduce the crank sprocket for the front timing chain in which the key way must face 11 o clock position. The index marks on the camshaft sprockets must be aligned and then place the front timing chain guide, then the front timing chain, the colored links of the chain must be properly aligned. Then bolt in the front tensioner arm and the tensioner assembly into its rightful place where it must fit tightly. Perform the same process as the front timing chain, to make sure the rear timing chain and its assembly is also in the right position and fixed tightly. If there are any locking pins still in the tensioners, rotate the crankshaft back to '11 o'clock' and check the timing marks. Set the crankshaft position sensor pulse wheel in its correct position and manually turn the engine to look for signs of bind up. Last of all when all parts are reconnected, fill the crankcase and other system with the correct fluids, reconnecting the battery, and start the engine then check for any sign of leakage while allowing the Powertrain Control Module learn the correct idle and fuel trim strategy for the best performance.

Remove the timing chain(s).