D3G, D4G and D5G Track-Type Tractors Caterpillar

176-1746 Piston Pump

Illustration 1	g01205538

(1) 199-1062 Piston Pump

Test at full speed:

Maximum displacement ... 56 cc/rev (3.4 in³/rev)

Output ... 127.7 L/min (34 US gpm)

Pressure ... 20000 kPa (2900 psi)

Pump speed ... 2400 rpm

Servo valve solenoid ... 1800 mA

Torque of tandem pump ... 243 N·m (180 lb ft)

Torque of single pump ... 213 N·m (155 lb ft)

The rotation of the pump is clockwise when the pump is viewed from the drive end.

(2) Pressure Override Relief Valve

Forward pressure setting ... 44000 ± 1000 kPa (6400 ± 145 psi)

Reverse pressure setting ... 44000 ± 2000 kPa (6400 ± 290 psi)

Installation torque ... 35 ± 1.8 N·m (26 ± 1 lb ft)

(3) Crossover Relief Valve

Pressure ... 47500 ± 750 kPa (6900 ± 110 psi)

Installation torque ... 160 ± 8 N·m (118 ± 6 lb ft)

(4) Charge pump ... 11.1 cc/rev (0.677 in³/rev)

(5) 199-1063 Piston Pump

Test at full speed:

Maximum displacement ... 56 cc/rev (3.4 in³/rev)

Output ... 127.7 L/min (34 US gpm)

Pressure ... 20000 kPa (2900 psi)

Pump speed ... 2400 rpm

Servo valve solenoid ... 1800 mA

Torque of tandem pump ... 243 N·m (180 lb ft)

Torque of single pump ... 213 N·m (155 lb ft)

The rotation of the pump is clockwise when the pump is viewed from the drive end.

(6) Charge relief valve

Relief setting ... 2500 ± 100 kPa (360 ± 15 psi)

Installation torque ... 70 ± 4 N·m (50 ± 3 lb ft)

(7) Torque for two bolts ... 215 ± 15 N·m (160 ± 11 lb ft)

(8) 199-4311 Servo Valve

Proportional solenoid ... 12V

Start of control ... 500 ± 70 mA

End of control ... 1650 ± 100 mA

176-1745 Piston Pump

Illustration 2	g01205705

(1) 199-1062 Piston Pump

Test at full speed:

Maximum displacement ... 56 cc/rev (3.4 in³/rev)

Output ... 127.7 L/min (34 US gpm)

Pressure ... 20000 kPa (2900 psi)

Pump speed ... 2400 rpm

Servo valve solenoid ... 1800 mA

Torque of tandem pump ... 243 N·m (180 lb ft)

Torque of single pump ... 213 N·m (155 lb ft)

The rotation of the pump is clockwise when the pump is viewed from the drive end.

(2) Pressure Override Relief Valve

Forward pressure setting ... 44000 ± 1000 kPa (6400 ± 145 psi)

Reverse pressure setting ... 44000 ± 2000 kPa (6400 ± 290 psi)

Installation torque ... 35 ± 1.8 N·m (26 ± 1 lb ft)

(3) Crossover Relief Valve

Pressure ... 47500 ± 750 kPa (6900 ± 110 psi)

Installation torque ... 160 ± 8 N·m (118 ± 6 lb ft)

(4) Charge pump ... 11.1 cc/rev (0.677 in³/rev)

(5) 199-1064 Piston Pump

Test at full speed:

Maximum displacement ... 56 cc/rev (3.4 in³/rev)

Output ... 127.7 L/min (34 US gpm)

Pressure ... 20000 kPa (2900 psi)

Pump speed ... 2400 rpm

Servo valve solenoid ... 1800 mA

Torque of tandem pump ... 243 N·m (180 lb ft)

Torque of single pump ... 213 N·m (155 lb ft)

The rotation of the pump is clockwise when the pump is viewed from the drive end.

(6) Charge relief valve

Relief setting ... 2500 ± 100 kPa (360 ± 15 psi)

Installation torque ... 70 ± 4 N·m (50 ± 3 lb ft)

(7) Torque for two bolts ... 215 ± 15 N·m (160 ± 11 lb ft)

(8) 199-4311 Servo Valve

Proportional solenoid ... 12V

Start of control ... 500 ± 70 mA

End of control ... 1650 ± 100 mA

(9) Torque for two bolts ... 215 ± 15 N·m (160 ± 11 lb ft)