4. Engine Body Point 6 Disassemble: l Keep the removed push rods by attaching tags showing corresponding cylinder Nos. Reassemble: l Always apply oil to the contact portions of the push rods and valve clearance adjusting screws. Point 7 Disassemble: Disassembly l Loosen the cylinder head bolts in two steps in the illustrated order. l Place the cylinder head assy on a pa- face from any damage. per board to prevent the combustion Head bolt disassembly order Reassemble: one. Uniformly install the head bolts manu- ally after applying oil on the threaded and seat portions.
d Remove the head gasket with a new They shall be tightened in two steps in the reverse of the order for disassem- I Head bolt tightening order bly. 1 Tightening torque Nm(kgf*m) 4TNE94.98 4TNE106 (T) First step: 49-58.8 (5-6) 88.3-98.1 (9-10) Second step: 102.9-112.7 (10.5-11.5) 181.4-191.2 (18.5-l 9.5) Point 8 Disassemble: l Carefully remove the fuel injection valve so as not to leave the tip end protector from being left inside the cylinder. Reassemble: l Replace the fuel injection valve protec- tor with a new one. Point 9 Disassemble:
\ l When removing each intake/exhaust, valve from the cylinder head, use a 4 & valve spring compressor (see 11 .I -4 in Vahfe spring compressor l Keep each removed intake/ exhaust valve after attaching a tag showing the corresponding Chapter 11) and compress the valve spring and remove the valve cotter. cylinder No. stone and extract the valve from the cylinder head. Reassemble: l If cotter burr is seen at the shaft of each intake/exhaust valve stem, remove it with an oil- l Replace the stem seal with a new one when an intake/exhaust valve is disassembled. l Carefully install each valve after oil application so as not to damage the stem seal. 4-4