How is the timing gear of the Weichai engine right

Generally in the timing gear of the engineCrankshaftThe front end as well as on the flywheel are marked with the alignment time. The meaning of the marking is the position of the dead center of the piston of the first cylinder of the engine. With this location, we can make it very easyProofreadingIt's good and punctual.

When we are disassembling the engine timing mechanism, we must carefully check that the timing mechanism is marked with official markings. If not, we must do it ourselves and mark a simple mark, otherwise if the timing is disrupted, and there is no timing mark, it will be very troublesome to find the position of the top dead center of the cylinder by ourselves.

Precautions for engine timing gears.

Almost all diesel engines have camshaft timing gears with two chamfers close together.

or a point) and a crankshaft gear will have a chamfer (or a point) tooth. This tooth of the crankshaft gear must be meshed between the two chamfered (or pointed) teeth of the timing gear when assembled.

The installation of the timing gear system is very important, if it is not installed properly, it can cause the diesel engine to not function properly, or cause the valve top piston to fail.

Weichai engine camshaft timing gear alignment method without marking:

1. Install the camshaft timing gear, which should be in the top dead center position of the first cylinder, and the timing mark on the flywheel and the flywheel shell should be aligned, and the timing gear should be aligned with the gear chamber with a little force.

Hold the gear, and at the same time rotate the camshaft with a screwdriver, so that the alignment pin on the camshaft is inserted into the gear alignment pin hole. If it is not aligned, it is allowed to misalign half of the teeth in a clockwise direction, but it is not allowed to be misaligned in the posterior. Pay attention to check the dowel pins on the camshaft end face.

Whether it is in the gear alignment pin hole. 4 M8 bolts are coated with 242 glue and tightened symmetrically with 35 Nm.

The cylinder compresses the top dead center, and the camshaft 6 cylinder is aligned with the gear in the lower figure, and this method must be corrected.

1. According to the mark on the crankshaft timing pulley, the crankshaft is generally required to have the position of the upper dead center of the piston of the 1 cylinder;

2. The mark on the camshaft timing pulley is aligned with the camshaft, and the double camshaft is aligned with the position of the two camshafts;

3. Install the timing belt chain. Only the camshaft gear of the engine timing gear is marked, and the rest of the gears are not marked. First, turn the engine so that the cylinder reaches the top dead center.

Then assemble other gears except camshaft gears, and see that there is a mark on the machine body, so that the mark of the camshaft gear coincides with this mark. After that, turn the engine to make it about 22 degrees before the top dead center, adjust the fuel injection pump to make it in a state of just out of the oil in a cylinder, and tighten the screws.

The flywheel is turned to 0 degrees, and the crankshaft gears in the timing gear chamber are marked (the original ones are O-marked). Align the intermediate gear marking, and then align the camshaft gear marking with the intermediate gear, and you're fine, the gears are all marked. After all kinds of marks are corrected, finally adjust the ignition time, open the cylinder head, rotate the crankshaft, determine the piston of a cylinder at the top dead center, and then unscrew the oil pump high-pressure oil pipe nut, rotate the oil pump crankshaft to a cylinder of oil nozzle just when the fuel is injected, tighten the coupling screw at this time, everything is OK!

This question is up to me, it takes a little time to type, please be patient and wait It is mainly divided into three steps: 1. According to the mark on the crankshaft timing pulley, the crankshaft is generally required to have a piston top dead center position; 2. The mark on the camshaft timing pulley is aligned with the camshaft, and the double camshaft is aligned with the position of the two camshafts; 3. Install the timing belt chain I hope mine will help you.

Hello dear, <>

We are glad to answer that the timing of the VVICHAI 340 horsepower engine is carried out during the vehicle assembly process, and there is no need for a separate timing operation. Here's how to do it: First, place the engine on level ground, making sure the valves and pistons are in the correct position.

Next, loosen both the bolts and nuts on the transmission of the crankshaft and camshaft, and turn the crankshaft to the right angle. Look at the timing markings on the engine crankshaft to make sure the shipping markings are aligned. The markings are generally located at the front or rear end of the crankshaft and are indicated by an arrow.

Loosen the fastening bolts of the engine's valve rocker arms, springs, and pushrods and remove them. Align the timing marks on the transmission of the camshaft with the timing marks on the tanmin crankshaft, and then fix the transmission of the camshaft to the camshaft gear. Reinstall components such as valve rockers, springs, and pushrods to the camshaft.

Finally, tighten the bolts and nuts on the transmission of the crankshaft and camshaft, and double-check that the timing marks on the crankshaft are in line with the timing marks on the camshaft. <>

1. First rotate the crankshaft so that the piston of a cylinder is at the top dead center of compression.

2. For 4-cylinder engines, first adjust the intake and exhaust valves of 1 cylinder, the exhaust valves of 3 cylinders, and the 2-cylinder intake valves. For 6-cylinder engines, adjust the intake and exhaust valves of the 1-cylinder, the exhaust valves of the 3-cylinder and 5-cylinder, and the intake valves of the 2-cylinder and 4-cylinder.

3. Then turn the crankshaft 360 degrees (i.e. one turn) to adjust the valve under the remaining width. 4-cylinder engine: double-row-no-intake means 1-cylinder intake and exhaust valve - 3-cylinder exhaust valve - 4-cylinder unadjusted - 2-cylinder intake valve (ignition sequence 1-3-4-2).

Summary. 1.Find the clip and clamp the axle, first use the clip to clamp the timing axle tightly, so as to prevent the calibration gear from getting stuck.

2.Release the top of the shaft. After that, the top of the shaft on the timing tooth shaft is loosened, so that it is convenient for the calibration of the gear shaft.

How to get the diesel engine timing gear right.

1.Find the clip stuck on the axle, first use the clip to clamp the timing axle tightly to fight the bucket, and the base mill prevents the calibration gear from getting stuck 2Release the top of the shaft. After that, the top of the shaft on the timing tooth shaft balance is loosened, so that it is convenient for the calibration of the gear shaft.

3.Locate the chain teeth. Find a tint with a color on the camshaft.

4.Tooth alignment. Use a small dot on the camshaft to align the teeth with the previously discovered color. 5.After that, release the clip. Loosen the clamp of the fixed axle of the solid sliding cavity.

6.The correction is complete. After completion of the trial check 7Summary. The installation and calibration must be carried out in accordance with the requirements of the gear.