TANK AS 4T4186 - Caterpillar

(1) Torque for four nuts ... 25 6 N m (18 4 lb ft)(2) Torque to install 9T-7639 optional ripper head end relief valve ... 54 14 N m (40 10 lb ft)(3) Torque for two screws ... 12 3 N m (9 2 lb ft)(4) Torque to install 9T-7638 main relief valve ... 54 14 N m (40 10 lb ft)(5) Torque for two nuts ... 45 5 N m (33 4 lb ft)(6) Torque to install 9T-7634 makeup valve ... 54 14 N m (40 10 lb ft)(7) Torque for two screws ... 10 1 N m (90 10 lb in)(8) Torque for two screws ... 7 1 N m (60 10 lb in)(A) Ripper control valve - optional(B) Angle cylinder control valve - optional(C) Lift cylinder control valve - standard(D) Tilt cylinder control valve - standard 9T-7248, standard two-valve bank, consists of only the lift (C) and tilt (D) control valves, however, bolt and screw locations and torques are the same as shown in 9T-7250. 9T-7249, optional three-valve bank, consists of only the lift (C) and tilt (D) and angle (B) control valves, however, bolt and screw locations and torques are the same as shown in 9T-7250.9T-7638 Main Relief Valve
Pressure setting ... 17 225 350 kPa (2500 50 psi) At a flow of ... 55 liter/min (15 U.S. gpm)(1) Torque for locknut ... 14 2 N m (10 1 lb ft)(2) Torque for cover nut ... 14 2 N m (10 1 lb ft)To adjust pressure setting, remove cover nut (2) on adjustment screw (3). Loosen locknut (1). Turn screw (3) clockwise for an increase or counterclockwise for a decrease in the pressure setting. After the relief valve adjustment is to specification, tighten the locknut on the screw and install the cover nut.9T-7639 Ripper Relief Valve - Optional
Pressure setting ... 23 080 690 kPa (3350 100 psi) At a flow of ... 2 liter/min (.5 U.S. gpm)(1) Torque for locknut ... 60 6 N m (45 4 lb ft)(2) Torque for cover nut ... 60 6 N m (45 4 lb ft)To adjust pressure setting, remove cover nut (2) on adjustment screw (3). Loosen locknut (1). Turn screw (3) clockwise for an increase or counterclockwise for a decrease in the pressure setting. After the relief valve adjustment is to specification, tighten the locknut on the screw and install the cover nut.