MOUNTING AND CONTROL GROUP 6S6378 - Caterpillar

Illustration 1 g00282006
Transmission Hydraulic Control Relief Valve (A) Pressure tap for the transmission oil pump. (B) Pressure tap for P3 torque converter inlet oil pressure. (1) Torque for the three plugs ... 4.5 1.0 N m (40 9 lb in) (2) Torque for the two nipple assemblies ... 14 4 N m (10 3 lb ft) (3) Torque for the plug ... 37 7 N m (27 5 lb ft)
Illustration 2 g00288999
Section A-A (4) 4M-2381 Spring Length under test force ... 12.19 mm (.480 inch) Test force ... 2.3 0.2 N (.52 .04 lb) Free length after test ... 22.61 mm (.890 inch) Outside diameter ... 7.62 mm (.300 inch) (5) 1M-9351 Spring Length under test force ... 81.79 mm (3.220 inch) Test force ... 658 31 N (148 7 lb) Free length after test ... 109.22 mm (4.300 inch) Outside diameter ... 13.49 mm (.531 inch)Turning adjustment screw (6) clockwise increases pump pressure that is measured at pressure tap (A). Turning adjustment screw (6) counterclockwise decreases pump pressure that is measured at pressure tap (A). One full turn of the adjustment screw (6) changes pump pressure 160 kPa (23 psi).