BUSHING 3613994 - Caterpillar

Tighten relief valve guide to ... 40 7 N m (30 5 lb ft)(1) Front housing assembly.(2) Oil pump cover assembly.(3) 1W1788 Spring (pump pressure relief valve): Length under test force ... 59.94 mm (2.360 in)Test force ... 314 14 N (71 3 lb)Free length after test ... 78.23 mm (3.080 in)Outside diameter ... 22.23 mm (.875 in)(3) 1W2208 Spring (pump pressure relief valve): Length under test force ... 59.94 mm (2.360 in)Test force ... 290 14 N (65 3 lb)Free length after test ... 85.85 mm (3.380 in)Outside diameter ... 22.23 mm (.875 in)(4) Width of oil pump rotors (new) ... 36.474 0.008 mm (1.4360 .0003 in) Depth of counterbore in front housing (new) ... 36.576 0.025 mm (1.4400 .0010 in)(5) Maximum permissible end clearance of oil pump rotors when measured with oil pump installed to front cover ... 0.15 mm (.006 in)
View A-A Of Rotor Oil Pump(6) Clearance of oil pump rotor tip when measured with oil pump installed to front cover ... 0.05 to 0.20 mm (.002 to .008 in) Maximum permissible clearance of oil pump rotor tip ... 0.28 mm (.011 in)
View A-A Of Front Housing(7) Bearing junction.(8) Diameter of bearing for rotor (new) ... 71.224 0.056 mm (2.8041 .0022 in)(9) Position of main bearing junction from vertical centerline ... 75 30 degrees