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Maintenance Standards
Rockers
Rocker bushing inside diameter, mm [in.]
Nominal Value ........... Ø36 [1.42]
Assembly Standard ... 36.000 to 36.040 [1.41732 to 1.41889]
Service Limit ............. 36.090 [1.42086]
Rocker shaft diameter, mm [in.]
Nominal Value ........... Ø36 [1.42]
Assembly Standard ... 35.966 to 35.991 [1.41598 to 1.41697
Service Limit ............. 35.940 [1.41496]Cylinder heads
Flatness of gasket surface, mm [in.]
Assembly Standard ... 0.03 [0.0012] or less
Repair Limit ............... 0.07 [0.0028]
Service Limit ............. 0.50 [0.0197]
NOTE! Reface if necessary
Thickness of gasket when tightened, mm [in.]
Nominal Value ........... 1.8 [0.07]
Assembly Standard ... 1.77 to 1.83 [0.0697 to 0.0720]
Cylinder liners
Inside diameter, mm [in.]
Nominal Value ........... Ø170 [6.69]
Assembly Standard ... 170.000 to 170.040 [6.69290 to 6.69447]
Repair Limit ............... 170.200 [6.70078]
Service Limit ............. 170.500 [6.71259]
Roundness, mm [in.]
Assembly Standard ... 0.02 [0.0008] or less
Cylindricity, mm [in.]
Assembly Standard ... 0.02 [0.0008] or less
Squareness of flange lower face to liner center line, mm [in.]
Assembly Standard ... 0.03 [0.0012] or less
Protrusion of cylinder liner at flange, mm [in.]
Assembly Standard ... 0.11 to 0.20 [0.0043 to 0.0089]
Pistons and cylinderheads
Clearance between piston top and cylinder head, mm [in.]
Standard Clearance .. [1.22 to 1.95) ([0.0480 to 0.0768])
Pistons
Outside diameter, mm [in.]
Nominal Value ........... Ø170 [6.69]
Assembly Standard ... 169.76 to 169.80 [6.6835 to 6.6850]
Service Limit ............. 169.66 [6.6795]
NOTE! Meaure diameter perpendicular to pin at piston skirt.
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