D353 INDUSTRIAL & MARINE ENGINES Caterpillar

Heat gears to 500° F (260° C) for installation.

(1) Diameter of bearing surface (journal) for the shaft ... .9825 ± .0005 in.(24.956 ± 0.013 mm)

Bore in bearing ... .985 ± .001 in.(25.02 ± 0.03 mm)

Clearance between bearing and shaft bearing surface ... .001 to .004 in.(0.03 to 0.10 mm)

(2) Diameter of bearing surface (journal) for the gear ... 1.310 to 1.311 in.(33.27 to 33.30 mm)

Bore in bearing ... 1.3125 to 1.3135 in.(33.338 to 33.363 mm)

Clearance between bearing and bearing surface on gear ... .0015 to .0035 in.(0.038 to 0.089 mm)

(3) All bearings to be driven past face of brackets ... .016 in.(0.41 mm)