TRANSMISSION AR 3317360 - Caterpillar

Illustration 1 g00737049
(A) 190-3080 Piston Pump. (B) 190-3081 Piston Pump
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The 144-8877 Piston Pump is a tandem pump. 190-3080 Piston Pump is used as the front pump. 190-3081 Piston Pump is used as the rear pump. Both pumps have the same specifications.Each pump is a variable displacement axial piston pump. The rotation of the pump is counterclockwise when the rotation is viewed from the drive end. Use SAE 10W oil at 65°C (149°F) for testing the pump.Test the pump at the rated speed. Output ... 375 L/min (100 US gpm) Pump pressure ... 1000 kPa (145 psi) Pump speed ... 1915 rpm Engine speed ... 1750 rpm (1) Setting for margin pressure adjustment ... 1950 50 kPa (283 7 psi) (2) Torque for 8T-4187 Bolts ... 460 60 N m (340 45 lb ft) (3) Torque for 177-0359 Bolts ... 780 N m (575 lb ft)Use the required rod (4) in order to obtain dimension (C). Dimension (C) is 54.5 0.1 mm (2.15 0.004 inch). 165-9396 Rod ... 159.2 mm (6.27 inch) 165-9397 Rod ... 159.4 mm (6.28 inch) 165-9398 Rod ... 159.0 mm (6.26 inch) 165-9399 Rod ... 158.8 mm (6.25 inch) (5) 6E-3869 Spring Free length ... 111.09 mm (4.374 inch) Outside diameter ... 33.8 mm (1.331 inch)Use the required rod (6) in order to obtain dimension (D). Dimension (D) is 0.20 0.10 mm (0.008 0.004 inch). 165-9402 Rod ... 152.2 mm (5.99 inch) 165-9403 Rod ... 151.8 mm (5.97 inch) 165-9404 Rod ... 152.0 mm (5.98 inch) 165-9405 Rod ... 152.4 mm (6.00 inch) (7) 6E-3872 Spring Free length ... 77 mm (3.03 inch) Outside diameter ... 21.1 mm (0.831 inch) (8) 165-9363 Spring Free length ... 12.67 mm (0.499 inch) Outside diameter ... 5.30 mm (0.209 inch)Use the required shim (9) in order to obtain dimension (E). Dimension (E) is 171.2 + 0.0 - 0.25 mm (6.74 + 0.0 - 0.0098 inch). 165-9361 Shim ... 0.50 mm (0.020 inch) 165-9362 Shim ... 0.75 mm (0.029 inch) (10) Torque for 8T-8442 Bolts ... 12 3 N m (106 26 lb in)Note: Apply 9S-3263 Thread Lock Compound to the threads of 8T-8442 Bolts before installation.