Intake / Exhaust Valve And Guide Cont - Yanmar 4TNV98 Service Manual

Intake / Exhaust Valve and Guide Cont

4TNV98 Engine
Inspection Item
Intake
4TNV98
(4-Valve Head)
Exhaust
Valve Guide Projection From Cylinder Head
Valve Guide Installation Method
Valve Stem Seal Projection From Cylinder Head
4TNE98 Engine
Inspection Item
Intake Valve
Exhaust Valve
Valve Guide Projection From Cylinder Head
Valve Stem Seal Projection From Cylinder Head
4TNV98 & 4TNE98 Diesel Engine
Guide Inside Diameter
Valve Stem Outside
Diameter
Oil Clearance
Guide Inside Diameter
Valve Stem Outside
Diameter
Valve Stem Bend
Guide Inside Diameter
Valve Stem Outside Diameter
Oil Clearance
Guide Inside Diameter
Valve Stem Outside Diameter
Oil Clearance
Standard
0.2756 - 0.2762 in.
(7.000 - 7.015 mm)
0.2734 - 0.2740 in.
(6.945 - 6.960 mm)
0.0016 - 0.0028 in.
(0.040 - 0.070 mm)
0.2756 - 0.2762 in.
(7.000 - 7.015 mm)
0.2732 - 0.2738 in.
(6.940 - 6.955 mm)
0.0018 - 0.0030 in.
(0.045 - 0.075 mm)
0.3819 - 0.3937 in.
(9.70 - 10.00 mm)
Cold-fitted
0.460 - 0.472 in.
(11.7 - 12.0 mm)
Standard
0.3156 - 0.3161 in.
(8.015 – 8.030 mm)
0.3136 - 0.3142 in.
(7.965 – 7.980 mm)
0.0014 - 0.0026 in.
(0.035 - 0.065 mm)
0.3156 - 0.3161 in.
(8.015 – 8.030 mm)
0.3136 - 0.3138 in.
(7.965 – 7.970 mm)
0.0018 - 0.0030 in.
(0.045 - 0.075 mm)
0.58 - 0.60 in.
(14.7 – 15.0 mm)
0.66 - 0.70 in.
(16.7 – 17.0 mm)
67
Reference
Limit
Page
0.2787 in.
(7.08 mm)
0.2717 in.
(6.90 mm)
See
0.0067 in.
Inspection of
(0.17 mm)
Valve
0.2787 in.
Guides on
(7.08 mm)
page 94.
0.2717 in.
(6.90 mm)
0.0067 in.
(0.17 mm)
See
Reassembly
of Valve
-
Guides on
page 97
and 103.
-
See
Reassembly
of Intake and
-
Exhaust
Valves on
page 98.
Reference
Limit
Page
0.3189 in.
(8.10 mm)
0.3110 in.
(7.90 mm)
See
0.0071 in. Inspection of
Intake and
(0.18 mm)
Exhaust
0.3189 in.
Valves on
(8.10 mm)
page 95.
0.3110 in.
(7.90 mm)
0.0071 in.
(0.18 mm)
See
Assembly of
- Valve
Guides on
page 98.
See
Assembly of
- Valve
Guides on
page 98.
Section 3. Engine