Cylinder Head - Kohler KDI 1903M Workshop Manual

INFORMATION ABOUT OVERHAULING

8.6 Cylinder head

8.6.1 Flatness check
Put the cylinder head on a surface plate and, with a dial
gauge, check the flatness of surface C.
The MAX value of allowable irregularity of surface C is
0.10mm.
If the value is not observed, you are required to grind surface
C.
The MAX removal allowed is 0.20 mm.
Important
•
Grinding is to be performed with sleeves A of the
injectors assembled.
8.6.2 Valve seats check
Thoroughly clean the valves and their seats with.
Measure indentation B of each valve with regard to the
cylinder head surface C, which is to be a MIN of 0.60 mm
and MAX of 0.85 mm.
The B MAX indentation allowed on worn components is 1.10
mm.
If the measured value does not correspond with the values
indicated, replace the worn component.
Important
•
The seats must be worked after driving to reach value
B, go to a rectification workshop for such operations.
8.6.3 Valve springs
Using a dynamometer, subject the spring to two different
forces (in Tab. 8.9) and check that the length of the spring
corresponds to the values indicated in the table.
(*1)
The code ED0057551850-S is installed from S/N
4418801760
Fig 8.20a - Fig 8.20b
Fig 8.21
Fig 8.22
8
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