D399, G399, D398, G398, D379, G379 ENGINES Caterpillar


Camshaft And Timing Gears

Usage:



(1) Torque for retainer plate bolts ... 60-70 lb. ft.(8,3-9,7 mkg)

(2) End clearance of camshaft ... .006-.010 in.(0,15-0,25 mm)

Maximum permissible clearance ... .020 in.(0,51 mm)

(3) Diameter of bearing journal ... 2.966-2.967 in.(75,34-75,36 mm)

Bearing bore ... 2.969-2.971 in.(75,41-75,46 mm)

Maximum permissible clearance between bearing and journal ... .009 in.(0,23 mm)

(4) Timing marks for camshaft and balancer (D379 and G379 Engines only).

(5) Timing marks for crankshaft and camshaft gears (All engines).

(6) SAE Opposite Rotation (clockwise engine), place cluster gear on end of camshaft with F mark.

(7) SAE Standard Rotation (counterclockwise engine), place cluster gear on end of camshaft without F mark.

NOTE: Specifications (8) and (9) for D379 and G379 Engines only.

(8) Bore in balance gear bearing ... 1.6019-1.6025 in.(40,688-40,705 mm)

Diameter of shaft bearing journal ... 1.5996-1.6000 in.(40,630-40,640 mm)

Maximum permissible clearance between bearing and journal ... .006 in.(0,152 mm)

(9) Balancer gear end clearance ... .0060-.0135 in.(0,152-0,343 mm)

Maximum permissible end clearance ... .019 in.(0,48 mm)

Caterpillar Information System:

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