What does 342 on the valve tappet represent?
1 Answers
The number 342 on the valve tappet represents thickness. Here are the relevant details: 1. Hydraulic Tappet: The hydraulic tappet maintains constant contact with the camshaft, operating without any clearance. Inside the tappet, hydraulic pressure is used to adjust the clearance. The hydraulic tappet mainly consists of a plunger, a check valve, and a check valve spring. It stores or releases engine oil through the action of the check valve, and by altering the oil pressure within the tappet chamber, the working length of the hydraulic tappet can be adjusted, thereby automatically regulating the valve clearance. 2. Valve Tappet Cleaning Interval: The cleaning interval depends on various factors, such as the vehicle's driving environment, the control method of the fuel-injected engine, and air quality. Generally, cleaning is required every 20,000 to 30,000 kilometers. If the vehicle operates in a heavily polluted environment (mainly referring to inhalable particulate matter), impurities can quickly accumulate on the throttle body. Over time, this can affect the engine's air intake, necessitating cleaning. This phenomenon is most noticeable when starting the vehicle.