518 SKIDDER POWER TRAIN Caterpillar


Transmission Oil Pump (1P2579)

Usage:

Rotation is counterclockwise when seen from the drive gear.

Bench test using SAE 10W oil at ... 120° F(49° C)

Output ... 22.5 U.S. gpm(85,2 lit/min)

with pump at ... 2350 rpm

at a pressure of ... 300 psi(21,1 kg/cm2)

(1) Diameter of both shafts ... 1.6233 ± .0002 in.(42,232 ± 0,005 mm)

(2) Clearance between each gear and the cover ... .0029 to .0041 in.(0,074 to 0,104 mm)

(3) Bore for all bearings ... 1.6253 ± .0003 in.(41,283 ± 0,008 mm)

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