SEAL 6J2056 - Caterpillar

OIL PUMP ROTOR(1) Clearance of oil pump gear rotor tip ... 0.05 to 0.20 mm (.002 to .008 in.) Maximum permissible clearance of oil pump gear rotor tip ... 0.28 mm (.011 in.)(2) Diameter of bearing for inner rotor (new) ... 17.830 0.013 mm (.7020 .0005 in.)Install the bearing so that one edge is 0.69 0.13 mm (.027 .005 in.) below the face of the rotor.Diameter of shaft (new) ... 17.780 0.008 mm (.7000 .0003 in.)Install the shaft so the distance from the bottom of the counterbore to the rotor end of the shaft is ... 21.84 0.25 mm (.860 .010 in.) (3) 1W9860 Spring for relief valve: Length under test force ... 59.94 mm (2.36 in.)Test force ... 231 14 N (52.2 3.1 lb.)Free length after test ... 73.41 mm (2.89 in.)Outside diameter ... 22.23 mm (.875 in.)Oil pressure measured at oil manifold [SAE 30 oil at 93 6°C (200 10°F)]:High idle ... 480 70 kPa (70 10 psi)Low idle minimum ... 105 kPa (15 psi)(4) Front housing assembly.(5) Torque for guide ... 41 7 N m (30 5 lb. ft.)(6) Oil pump cover assembly.(7) Diameter of bearing for outer rotor (new) ... 71.22 0.05 mm (2.804 .002 in.) Diameter of outer rotor (new) ... 71.069 0.013 mm (2.7980 .0005 in.)(8) Width of oil pump rotors (new) ... 22.218 0.007 mm (.8747 .0003 in.)Depth of counterbore in front housing (new) ... 22.30 0.03 mm (.878 .001 in.)(9) Maximum permissible end clearance of oil pump gears when measured with oil pump installed to front cover ... 0.120 mm (.0047 in.)
VIEW A-A OF FRONT HOUSING(10) Bearing junction.(11) Position of bearing junction from vertical centerline ... 45 30°