3.2. Inspection and Measurement on Major Parts 3.2.1. Cylinder block z Clean the cylinder block thoroughly, and check for any crack or damage. z If there is any crack or severe damage, replace it and if there is minor one, correct it. z Check for any clogging or corrosion in the oil passage and water passage. z Carry out a leakage test for any crack or air leaking. (Hydraulic test) z Plug each cylinder block's water and oil discharge ports, and apply the air pressure of about 4kg/cm 2 to intake port and soak it in water for about 1 minute to check if there is any leakage. (Water temperature : 70 ° C) 3.2.2.
Cylinder head (1) Disassembly 1) Disassemble the cylinder assembly, and put it on the shelf for assembly or clean lathe. 2) Prevent any damage to gasket's contact surface of the cylinder head. 3) Disassemble the cotter pin, spring, spring seat pushing valve spring by a special tool. 4) Pull out the intake and exhaust valves. 5) The disassembled parts are kept laid in turn. 6) Disassemble the valve stem seal. (2) Inspection of cylinder head 1) Check for the cylinder head. z Remove carbon from the cylinder head lower surface, and then should be careful not to scratch the surface. z Check any crack or damage that can not found by naked eyes through the hydraulic or magnetic particle test.
DL06 Diesel Engine Disassembly and Reassembly of Major Components 70