Komatsu 82E Series - Page 89

4-20 82E-5 – 98E-5 SERIES
4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES
(2) Valve guide
Mainly check damage and wear on the inside
wall.
Apply the service part No. when replacing a
part.
Valve stem clearance
mm
Model Service part No.
3D82AE
(2-valve)
Suction YM124060-11800
Exhaust YM119802-11810
4D84E
(S)3D84E
3D88E, 4D88E
(2-valve)
Suction YM120130-11860
Exhaust YM129150-11810
S4D84E
(4-valve)
Suc./
Exh.
YM119717-11800
4D94LE
(S)4D98E
(4-valve)
Suc./
Exh.
YM129907-11800
Model Part name Place Standard Limit
3D82AE
(2-valve head)
Intake valve
Guide I.D. 7.000 – 7.015 7.08
Stem O.D. 6.945 – 6.960 6.90
Clearance 0.040 – 0.070 0.18
Exhaust valve
Guide I.D. 7.000 – 7.015 7.08
Stem O.D. 6.940 – 6.955 6.90
Clearance 0.045 – 0.075 0.18
4D84E
(S)3D84E
3D88E
4D88E
(2-valve head)
Intake valve
Guide I.D. 8.010 – 8.025 8.10
Stem O.D. 7.955 – 7.975 7.90
Clearance 0.035 – 0.070 0.18
Exhaust valve
Guide I.D. 8.015 – 8.030 8.10
Stem O.D. 7.955 – 7.970 7.90
Clearance 0.045 – 0.075 0.18
S4D84E
(4-valve head)
Intake valve
Guide I.D. 6.000 – 6.015 6.08
Stem O.D. 5.960 – 5.975 5.90
Clearance 0.025 – 0.055 0.15
Exhaust valve
Guide I.D. 6.000 – 6.015 6.08
Stem O.D. 5.945 – 5.960 5.90
Clearance 0.040 – 0.070 0.17
4D94LE
(S)4D98E
(4-valve head)
Intake valve
Guide I.D. 7.000 – 7.015 7.08
Stem O.D. 6.945 – 6.960 6.90
Clearance 0.040 – 0.070 0.17
Exhaust valve
Guide I.D. 7.000 – 7.015 7.08
Stem O.D. 6.940 – 6.955 6.90
Clearance 0.045 – 0.075 0.17