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


Oil Pump
(Single Section 6L5993, 2N2883, 7L2604, 6L8915 And 6L3553)

Usage:



6L8915 Pump delivery, approx: ... 120 U.S. gpm (454 lit/min)

with engine at ... 1200 rpm

or with pump at ... 1800 rpm

5L5993 & 6L3553 Pumps delivery, approx: ... 92 U.S. gpm (348 lit/min)

with engine at ... 1200 rpm

or with pump at ... 1800 rpm

(1) Diameter of drive shaft rear journal ... 1.2486-1.2492 in.(31,714-31,730 mm)

(2) Bore in drive shaft rear bearing ... 1.2516-1.2526 in.(31,791-31,816 mm)

Maximum permissible clearance between bore and journal ... .008 in.(0,203 mm)

(3) Diameter of drive shaft front journal ... 1.6147-1.6153 in.(41,013-41,028 mm)

(4) Bore in drive shaft front bearing ... 1.6177-1.6187 in.(41,090-41,114 mm)

Maximum permissible clearance between bore and journal ... .008 in.(0,203 mm)

(5) Bore in retainer bearing ... 2.125-2.126 in.(53,975-54,000 mm)

Bearing journal diameter ... 2.120-2.121 in.(53,848-53,873 mm)

Maximum permissible clearance between bore and journal ... .008 in.(0,203 mm)

(6) Diameter of idler shaft ... 1.3742-1.3748 in.(34,904-34,919 mm)

(7) Bore in idler gear bearing ... 1.3756-1.3766 in.(34,940-34,965 mm)

Maximum permissible clearance between bore and journal ... .006 in.(0,15 mm)

(8) Clearance between gears and covers ... .0049-.0065 in.(0,124-0,165 mm)

Caterpillar Information System:

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