Valve seat inserts - Import export

Application The Hunger RDS is designed to precision machine the seat ring bores in cylinder heads to produce smooth and closely fitting contact surfaces for oversize seat inserts. Features The RDS is equipped for counterboring as well as for facing the bottom of seat ring bores in a lathe-type action with a single point carbide cutter. The RDS is aligned in centerline with the valve guide by means of a pilot which is locked in the valve guide. An universal steady stabilizes the RDS against lateral displacement. Pilots and steady furnished with Hunger valve seat refacing tool also suit for the corresponding RDS tool. The built in feed gear mechanism for automatic longitudinal and cross feed of the single point cutter eliminates the need for multiple cutter sets and other accessories. An adjustable stop for the tool slide permits quick selection of the proper sized bore diameter.

Application With the PVM1 assembly set, worn valve guides can be quickly and easily removed from the cylinder head and new valve guides inserted into the cylinder head. The assembly set is particularly suitable for motorcycle, car and commercial vehicle workshops. Features The air hammer can also be used to drive valve seat inserts out of the cylinder head. For this purpose a Hunger valve seat turning device is used to turn a groove into the valve seat ring. The seat ring is driven out of the cylinder head by means of a clamping head whose expandable clamping elements engage in the groove. Handling Insert the appropriate drift pin into the pneumatic hammer and insert the drift pin into the valve guide. Switch on the compressed air supply with the control lever provided on the pistol grip of the air hammer. The valve guide is driven out of or into the cylinder head by the rapid impact sequence. A soft protective ring placed on the drift pin protects the valve guide from damage.