Valve Valve seat z It is necessary to work boring of inner diameter of it when replace the valve seat. z Apply valve lapping compound to the valve head seating face on the valve seat and lap the valve seat by turning it until it is seated in position, then wipe out the lapping compound. 4) Valve spring z Visual check Check the appearance of valve spring and if necessary replace the spring. z Valve spring free length Use a vernier caliper to measure the valve spring free length. If the measured value is less than the specified limit, the valve spring must be replaced.
DL06 Diesel Engine Disassembly and Reassembly of Major Components 74 Standard Limit Intake (A) 0.35 ∼ 0.65 mm 0.85 mm Exhaust (A) 0.35 ∼ 0.65 mm 0.85 mm Intake valve (B) Exhaust valve (B) 60O 45O