4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES (3) Intake/exhaust valve Mainly clean and check damage and wear at the valve stem and seat. (a) Seat contact: See (1)-(d) above. (b) Stem outside diameter: See (2) above. (c) Valve head thickness mm (d) Valve stem bend mm (e) Overall length mm (4) Valve spring Mainly inspect damage and corrosion.
mm 82E-5 – 98E-5 SERIES 4-21 Model Part Standard Limit 3D82AE – 3D88E (2-valve head) Intake 1.24 – 1.44 0.8 Exhaust 1.35 – 1.55 0.8 S4D84E (4-valve head) Intake 1.00 – 1.20 0.6 Exhaust 1.00 – 1.20 0.6 4D94LE (S)4D98E (4-valve head) Intake 1.44 – 1.84 1.0 Exhaust 1.70 – 2.10 1.0 Limit 0.01 Standard Limit 3D82AE Intake/ Exhaust 97.2 – 97.8 97.0 3D84E – 3D88E 4D84E – 4D88E Intake/ Exhaust 108.7 – 109.3 108.5 S4D84E Intake/ Exhaust 100.0 – 100.6 99.8 4D84LE (S)4D98E Intake 102.3 – 103.1 102.1 Exhaust 102.4 – 103.2 102.2 Free length Inclina- tion limit Standard Limit 3D82AE 44.4 43.9 1.4 3D84E – 3D88E 4D84E – 4D88E 42.0 41.5 S4D84E 37.4 36.9 1.3 4D84LE (S)4D98E 39.7 39.2 1.4