Service Data and Specifications (S.D.S.) — Inspection and Adjustment — CD20 (Cont'd)
EM-280spec tableCD20 diesel engine specifications.
Valve spring
Valve spring (Unit: mm (in))
Free height mm (in)
Sub-itemOuter
Value43.2 (1.701)
Free height mm (in)
Sub-itemInner
Value38.2 (1.504)
Assembled height mm/N (mm/kg, in/lb) — Standard
Sub-itemOuter
Value36.1/164.8 (36.1/16.8, 1.421/37.0)
Assembled height mm/N (mm/kg, in/lb) — Standard
Sub-itemInner
Value32.6/78.5 (32.6/8.0, 1.283/17.6)
Out-of-square "S" mm (in)
Sub-itemOuter
Value2.1 (0.083)
Out-of-square "S" mm (in)
Sub-itemInner
Value1.9 (0.075)
Valve guide
Valve guide (Unit: mm (in))
Valve guide
Sub-itemOuter diameter
Standard11.023 - 11.034 (0.4340 - 0.4344)
Service11.223 - 11.234 (0.4418 - 0.4423)
Valve guide
Sub-itemInner diameter (Finished size)
Standard7.000 - 7.015 (0.2756 - 0.2762)
Service
Cylinder head valve guide hole diameter
Sub-item
Standard10.975 - 10.996 (0.4321 - 0.4329)
Service11.185 - 11.196 (0.4404 - 0.4408)
Interference fit of valve guide
Sub-item
Standard0.027 - 0.059 (0.0011 - 0.0023)
Service
Valve guide — stem to guide clearance (Unit: mm (in))
Stem to guide clearance — Intake
Standard0.020 - 0.050 (0.0008 - 0.0020)
Max. tolerance0.10 (0.0039)
Stem to guide clearance — Exhaust
Standard0.040 - 0.070 (0.0016 - 0.0028)
Max. tolerance0.10 (0.0039)
Valve deflection limit
Standard
Max. tolerance0.1 (0.004)
Valve seat resurfacing
NOTE
*: Cylinder head machining data