797F and 797F XQ Off-Highway Truck Power Train Caterpillar

Illustration 1	g01950256

Note: Lubricate the gear pump group with clean oil before you operate. The gear pump group must rotate freely by using your hand.

(1) Section for transmission scavenge

Rotation ... Counterclockwise

Test speed ... 1800 rpm

Test pressure ... 70 kPa (10 psi)

Minimum flow ... 856.0 L/min (226.1 US gpm)

(2) Section for transmission charging

Rotation ... Counterclockwise

Test speed ... 1800 rpm

Test pressure ... 3100 kPa (450 psi)

Minimum flow ... 296.0 L/min (78.2 US gpm)

(B) Diameter of the new shaft of the gear ... 50.795 ± 0.005 mm (1.9998 ± 0.0002 inch)

(C) Distance from end of four dowels to the face of the oil pump body assembly (3) ... 5.5 ± 0.5 mm (0.22 ± 0.02 inch)

Note: Make sure that the gear (4) slides freely on two woodruff keys (5).

Illustration 2	g01950258
Detail D (7) Oil pump body assembly

(H) Location of the joints of six sleeve bearings from the vertical centerline ... 30 ± 15 degrees

(6) 262-0562 Sleeve Bearing

Inside diameter ... 50.918 ± 0.040 mm (2.0046 ± 0.0016 inch)

Outside diameter ... 55.732 ± 0.025 mm (2.1942 ± 0.0010 inch)

(J) Installation depth of four sleeve bearings (6) ... 1.50 ± 0.25 mm (0.059 ± 0.010 inch)

Illustration 3	g01950264
Detail E

(L) Distance from end of the sleeve (8) to the face of the cover assembly (9) ... 11.0 ± 0.5 mm (0.43 ± 0.02 inch)

Illustration 4	g06249746
Detail F

(N) Distance from end of two dowels to the face of the cover assembly (10) ... 5.5 ± 0.5 mm (0.22 ± 0.02 inch)

(11) 455-1875 Sleeve Bearing

Outside diameter ... 57.226 ± 0.013 mm (2.2530 ± 0.0005 inch)

Thickness ... 3.116 ± 0.013 mm (0.1227 ± 0.0005 inch)

(P) Installation depth of two sleeve bearings (11) ... 1.5 ± 0.5 mm (0.06 ± 0.02 inch)