Qsk45 Qsk60 Diesel Engine Exhaust Valve Stem Seal Ring 4080343 Mechanical Engine Parts

Desc.

Seal Ring

Part No

4080343

Brand Name

Cummins, Detroit, DCEC, CCEC, XCEC etc.

Other parts

pls contact freely if you need other P/N

Engine Type

Diesel engine, Gas engine, Diesel Generator, Marine engine, Construction engine Pump engine etc.

Spare Type

Wearing spare parts, maintenance tools, repair kit, upper and lower engine gasket kit.

Condition:

Original and brand new

Applicatble industriy

Retail, marine engines, Construction works , Energy & Mining etc

Key Word:

Original spare parts and engine repair tool kits

Trade terms

FOB EXW CIF DDU DDP,

Door to door is available in some countries.

Delivery time:

Most parts are in stock, bulk order based on qty

Payment

T/T, L/C, D/A, Alipay, Western Union, Paypal etc.

Place of origin

China/ USA/ Japan/ Austria/ Mexico

Package

Neutral or original packaging

About the product

Valve stem seal is a type of oil seal that is generally vulcanized from an outer skeleton and fluororubber. The diameter of the oil seal is equipped with a self tightening spring or steel wire, which is used for sealing the engine valve guide rod.

Valve oil seals can prevent engine oil from entering the intake and exhaust pipes, prevent oil loss, prevent gasoline and air mixture and exhaust gas leakage, and prevent engine oil from entering the combustion chamber. Valve oil seal is one of the important components of the engine valve group, which comes into contact with gasoline and engine oil at high temperatures. Therefore, it is necessary to use materials with excellent heat and oil resistance, usually made of fluororubber

Installation and replacement of valve oil seal

(1) Disassembly steps for valve stem oil seal:

① Disassemble the camshaft and hydraulic tappet, and store them face down. When operating, be careful not to interchange the tappet. Use spark plug wrench 3122B to remove the spark plug, adjust the piston of the corresponding cylinder to the top dead center, and screw the pressure hose VW653/3 into the threaded hole of the spark plug.

② Install the spring compression tool 3362 onto the cylinder head with bolts, as shown in Figure 1. Adjust the relevant valves to the correct position, and then connect the pressure hose to the air compressor (with an air pressure of at least 600kPa). Use a threaded core rod and a thrust piece to press down on the valve spring and remove the spring.

③ The valve lock block can be removed by tapping lightly on the valve spring seat. Use tool 3364 to pull out the valve stem oil seal, as shown in Figure 2.

(2) Installation of valve stem oil seal.

Install the plastic sleeve (A in Figure 3) onto the valve stem to prevent damage to the new valve stem oil seal. Lightly apply a layer of engine oil to the lip of the oil seal. Install the oil seal (B in Figure 3) onto tool 3365 and slowly push it onto the valve guide. Special reminder: Before installing the intake and exhaust valves, a layer of engine oil must be applied to the valve stem.