G379, G398 & G399 ENGINES Caterpillar


Bearing Surface (Journal) For Connecting Rods

Usage:

(A) Measurement ... 10.52 mm (.414 in.)

(B) Measurement ... 10.52 mm (.414 in.)

(1) Diameter of the journal at (A) and (B) (new) ... 126.980 ± 0.025 mm (4.9992 ± .0010 in.)

Difference in diameter at (A) and (B) must not be more than ... 0.025 mm (.0010 in.)

Surface finish on diameter of journal ... 0.25 micrometer or smoother (10 micro inches)

(2) Radius ... 10.31 ± 0.18 mm (.406 ± .007 in.)

Surface finish in radius ... 1.6 micrometer or smoother (63 micro inches)

NOTE: Radius (2) must bend smoothly (have no sharp edges) with the machined surfaces of the journal.

(3) Width of journal ... 117.412 + 0.18 - 0.08 mm (4.6225 + .007 - .003 in.)

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