5.4" BORE, 60 V12 VEHICULAR ENGINE Caterpillar

(1) Bore in roller:

Earlier ... .5031 to .5037 in.(12.779 to 12.794 mm)

Later ... .6267 ± .0003 in.(15.918 ± 0.008 mm)

(2) Diameter of pin:

Earlier ... .5013 to .5015 in.(12.733 to 12.738 mm)

Later ... .6247 ± .0001 in.(15.867 ± 0.003 mm)

Clearance between roller and pin:

Earlier ... .0016 to .0024 in.(0.041 to 0.061 mm)

Later ... .0016 to .0024 in.(0.041 to 0.061 mm)

(3) Bore in rocker arm ... .7263 ± .0003 in.(18.448 ± 0.008 mm)

(4) Shaft diameter ... .7245 ± .0005 in.(18.402 ± 0.013 mm)