(2) Install the valve hydraulic tappet. Hydraulic tappets must be installed in the original installation holes. If you want to change it, you should change a set.
(3) Install the camshaft. Apply lubricating oil to the bearing seat and journal, and put the camshaft on the bearing hole so that the two cams of the first cylinder face upwards. It should be noted here that after the cylinder head is installed on the cylinder block, the crankshaft cannot be placed at the top dead center of any piston when rotating the camshaft.
(4) Install the bearing covers in sequence and tighten them diagonally first; Second and fifth bearing caps, and then diagonally tighten the first and third bearing caps with a tightening torque of 20Nm.
(5) Install the camshaft oil seal, but don't press it to the bottom to avoid blocking the oil return hole.
(6) Install the camshaft timing gear. Install the semicircle first, then press the timing gear, and tighten the fixing bolt with a torque of 80Nm.
(7) Clean and straighten the cylinder block, put the piston of the first cylinder at the top dead center, put the cylinder pad on it, and install the cylinder head. Then, tighten the cylinder bolts in strict accordance with the requirements, and tighten the cylinder bolts in four times: the first tightening torque is 40Nm, the second tightening torque is 60Nm, the third tightening torque is 75Nm, and the fourth tightening torque is to continue to turn the wrench for a quarter turn.
Introduction:
An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (gasoline engines, etc. ), external combustion engine (Stirling engine, steam engine, etc. ), motor, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy. The engine is suitable for both power generation devices and complete machines (such as gasoline engines and aero-engines) including power devices. The engine was first born in Britain, so the concept of engine also originated in English. Its original meaning refers to "a mechanical device that generates power".
Introduction:
Some people call an engine an engine. In fact, the engine is a complete set of power output equipment, including transmission gear, engine and transmission shaft. It can be seen that the engine is only a part of the whole engine, but it is the core part of the whole engine. People have continuously developed various types of engines, which can be mainly divided into three categories: internal combustion engines, external combustion engines and motors.
Brief description:
The engine block is the skeleton of the engine and the installation foundation of various mechanisms and systems of the engine. The main parts of the engine are all installed inside and outside and bear various loads. Therefore, the car body must have sufficient strength and rigidity. Engine cylinder block is mainly composed of cylinder block, cylinder liner, cylinder head and cylinder gasket.