ROD 9T2891 - Caterpillar

Rotation is counterclockwise when seen from drive end.Type of pump: Variable piston.For test, use SAE 10W oil at 66°C (151°F). Test At Full Speed:Output ... 152 liter/min (40 U.S. gpm) At a pressure of ... 690 kPa (100 psi)With pump at ... 2200 rpmOutput ... 150 liter/min (39.0 U.S. gpm) At a pressure of ... 6900 kPa (1000 psi)With pump at ... 2200 rpm Test At Half Speed:Output ... 76 liter/min (19.7 U.S. gpm) At a pressure of ... 690 kPa (100 psi)With pump at ... 1100 rpmOutput ... 75 liter/min (19.5 U.S. gpm) At a pressure of ... 6900 kPa (1000 psi)With pump at ... 1100 rpm(1) 6E-6156 Spring Length under test force ... 47.0 mm (1.85 in)Test force ... 814 55 N (183 12 lb)Free length after test ... 83.0 mm (3.27 in)Outside diameter ... 44.1 mm (1.7 in)Torque for four head (2) bolts (not shown) ... 165 N m (120 lb ft)Shaft Bearing Preload Adjustment:
1. Perform this procedure when new swashplate or bearings are installed.2. Assemble pump swashplate, shaft, bearing (3) and shim (4).3. Install cover and tighten four head bolts to ... 27 3 N m (20 2 lb ft)4. Clearance (A) must be ... 0.0 to 0.05 mm (0.0 to .002 in)5. If necessary, change shim (4) to obtain proper initial clearance, reassemble and torque head bolts to 165 N m (120 lb ft). Margin pressure setting ... 2100 100 kPa (305 15 psi)Maximum system pressure setting ... 13 780 350 kPa (2000 50 psi)(1) 6E-3274 Spring Length under test force ... 14.4 mm (.57 in)Test force ... 81.7 14.5 N (18.4 3.3 lb)Free length after test ... 15.9 mm (.63 in)Outside diameter ... 7.7 mm (.30 in)(2) 6E-3275 Spring Length under test force ... 15.1 mm (.59 in)Test force ... 40.2 2.8 N (9.0 .6 lb)Free length after test ... 20.5 mm (.81 in)Outside diameter ... 10.7 mm (.42 in)(3) 6E-3276 Spring Length under test force ... 32.6 mm (1.28 in)Test force ... 462 71 N (104 16 lb)Free length after test ... 35.6 mm (1.40 in)Outside diameter ... 19.2 mm (.76 in)