The Erection And Dismantling Of Timing Chain And Sprocket Should Pay Attention To Details

                                   In the engine repairs, often need to install and remove timing chain andsprocketIt is an important part in the process of engine repair.Installation is correct, directly influences the whole quality of engine repair.If a slight negligence in the work, will cause the engine starting is difficult, can't even start.In the installation and removal of timing chain and sprocket, should grasp the following points:
(1) remove the battery negative electrode wire.
(2) remove the engine hood and interfere with the homework before parts.
(3) rotating curved turn, make 1 cylinder piston compression on the check point location and align the timing of the mark in the camshaft and crankshaft sprocket, has two timing marks on the camshaft sprocket, one is 1 cylinder when the piston is at top dead center timing tags, then 1 cylinder inlet valve and exhaust valve in the closed position;2 it is 4 cylinder piston at top dead center timing tags, then 4 cylinder inlet valve and exhaust valve in the closed position.Be sure to find out what is the cylinder piston is in compression on the check point location.
(4) remove the bolts on the camshaft sprocket and remove camshaft timing chain and sprocket
(5) if you need to replace the crankshaft sprocket, used, remove the sprocket.Install the new sprocket, chain and chain slot should be aimed at, to prevent loosening.
(6) install on the camshaft sprockets, timing chain sprocket, the chain suspension, the timing marks on the camshaft and crankshaft sprockets.The positioning pin hole sprocket wheel and the camshaft on the positioning pin hole alignment, the chain wheel is installed on the camshaft.The camshaft sprocket bolt tightening torque for 20 n. M.
(7) using the oil lubricating timing sprockets and chain.
Turn the crankshaft two laps, (8) to see whether the engine timing tags alignment.If the timing mark misaligned, should according to the above steps, to operate.
If there are no timing marks on the camshaft gear, when installation should pay attention to the following points:
(1) installing crankshaft sprocket.
(2) the timing chain vibration plate installed on the cylinder block.
(3) the timing mark on the crankshaft sprocket and timing vibration plate at the bottom of the timing mark alignment.
(4) the timing chain suspension, hold the camshaft sprocket, the timing chain installed on the crankshaft gear.
(5) the positioning hole centerline camshaft sprocket and the timing chain vibration plate at the top of the timing mark alignment.
(6) the dowel camshaft and the camshaft sprocket positioning hole alignment.The sprocket wheel loaded on the camshaft, bolt tightening torque of 100 n · M.
(7) using the oil lubricating timing chain and sprocket.
Turn the crankshaft two laps, (8) to see whether the engine timing tags alignment.If the timing mark misaligned, should press the key operation, to operate.
Above is my according to the experience of installation and removal of timing chain and sprocket should pay attention to details.