Like timing belts, timing chains drive a automobile’s camshaft. Stronger than their counterparts, timing chains are almost restore-free with no definitive substitute schedule. In case your Ford Taurus produces a vociferous rattle everytime you speed up, likelihood is it is time to test and exchange your timing chain. This is how that is finished in a Taurus with a 3.4L DOHC engine.
Remove YourFord Taurus Timing Chain
Check your owner’s guide for the really useful mileage for changing your timing chain. Substitute for a Ford Taurus is 100,000 miles. Find the timing chain. Replace it if the automated chain adjuster (also referred to as the tensioner) is broken or worn. Take off the engine front cowl and the crankshaft place sensor pulse ring
Place the crankshaft so the No. 1 piston is at “Top Dead Center” (TDC). The crankshaft key-means groove and the oil pump mark ought to line up. Verify that the camshaft sprockets line up on high. It’s possible you’ll want to show the crankshaft one full revolution and test once more. Disengage the timing chain guides, tensioner arm and tensioner retaining bolts and take the timing chain off the engine.
Discharge the tensioner ratchet/pawl mechanism taken from the tensioner’s entry opening. Place a small wire inside the piston’s prime to unseat the oil test ball. This compacts the tensioner rack and piston into the tensioner housing. Condense the tensioner manually. Remove the camshaft timing chain sprockets if they’re worn or broken.
Install Your Ford Taurus Timing Chain
Flip the crankshaft so the No. 1 piston is at TDC. The crankshaft key-approach groove and the oil pump mark ought to line up. Line up the sprocket and chain timing marks and set up the timing chain. The crankshaft, camshaft and stability shaft additionally ought to line up. Reconnect the camshaft sprockets (if changing). Safe the sprocket bolts at 48 to 70 foot pounds (64 to 95 Nm).
Put in the compressed timing chain guides, tensioner arm and tensioner. Safe the tensioner’s pivot bolt at 25 to 39 foot kilos (34-fifty three Nm) and safe the retaining bolts at 14 to twenty foot kilos (18-27 Nm). Align the timing chain’s timing index marks and the crankshaft and camshaft sprocket and steadiness shaft pushed gear index marks. Join the crankshaft place sensor pulse ring to the crankshaft. Line up the crankshaft key and the sensor ring’s key-approach. Replace the engine front cover.
[taken from ehow.com]
