12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Piston Pump (Hydraulic and Steering) Caterpillar


Piston Pump (Hydraulic and Steering)
`



Illustration 1g01392305

(5) Pump control valve group

The rotation of the shaft is counterclockwise when the rotation of the shaft is viewed from the drive end.

Type of the pump: Variable piston

For the test, use SAE 10W oil that is at 65 °C (149 °F).

Test at full speed:

Output ... 210 ± 10 L/min (55 ± 2.6 US gpm)
Pressure ... 690 kPa (100 psi)
Pump speed ... 2200 rpm
Engine speed ... 2200 rpm
Output ... 200 L/min (53 US gpm)
Pressure ... 6900 kPa (1000 psi)
Pump speed ... 2200 rpm
Engine speed ... 2200 rpm

Test at half speed:

Output ... 105 ± 10 L/min (28 ± 2.6 US gpm)
Pressure ... 690 kPa (100 psi)
Pump speed ... 1100 rpm
Engine speed ... 1100 rpm
Output ... 100 L/min (26 US gpm)
Pressure ... 6900 kPa (1000 psi)
Pump speed ... 1100 rpm
Engine speed ... 1100 rpm

(1) Torque for four bolts ... 91 ± 4 N·m (65 ± 3 lb ft)

(2) Torque for the bolt ... 91 ± 4 N·m (65 ± 3 lb ft)

(3) Torque for the bolt ... 91 ± 4 N·m (65 ± 3 lb ft)

(4) Torque for four bolts ... 34 ± 3 N·m (25 ± 2 lb ft)




Illustration 2g01392310

View D-D

(7) Pump rotating group (hydraulic oil cooling)

Note: Apply 4C-4030 Thread Lock Compound to the threads of the rods before installation.

(6) Torque for rods ... 79 ± 4 N·m (60 ± 3 lb ft)

(8) 100-3409 Bias Spring

Length under test force ... 115 mm (4.5 inch)
Test force ... 414 ± 41 N (93 ± 9.2 lb)
Free length after test ... 141 mm (5.6 inch)
Outside diameter ... 42 mm (1.7 inch)

Note: To achieve 0.010 to 0.100 mm (0.0004 to 0.0039 inch) axial shaft end play, use shims, as required.

(9) 6E-1436 Shim Pack

Quantity ... 17
Outside diameter ... 38.5 mm (1.52 inch)
Inside diameter ... 32.02 mm (1.261 inch)

(10) Torque for two plugs ... 12.9 ± 0.1 N·m (115 ± 1 lb in)




Illustration 3g01392328

View A-A

(11) Torque for swashplate plug ... 102 ± 4 N·m (75 ± 3 lb ft)

(12) Torque for three bolts ... 8.5 ± 1.0 N·m (75 ± 9 lb in)

(13) Torque for two flat head screws ... 4.0 ± 0.4 N·m (35 ± 4 lb in)

(14) 9T-1699 Spring

Length under test force ... 11.10 mm (0.437 inch)
Test force ... 32.60 ± 3.11 N (7.3 ± 0.7 lb)
Free length after test ... 17.17 mm (0.676 inch)
Outside diameter ... 24.892 mm (0.9800 inch)



Illustration 4g01392353

View B-B

(15) Torque for O-ring plug ... 102 ± 4 N·m (75 ± 3 lb ft)




Illustration 5g01392332

Pump rotating group (hydraulic oil cooling)

Note: Apply 4C-4030 Thread Lock Compound to the threads of the bolts before installation.

(16) Torque for four socket head bolts ... 34 ± 3 N·m (25 ± 2 lb ft)

(17) 9T-7771 Spring

Length under test force ... 51.5 mm (2.03 inch)
Test force ... 1555 ± 155 N (350 ± 35 lb)
Free length after test ... 71.2 mm (2.80 inch)
Outside diameter ... 52.7 mm (2.07 inch)

Information System:

143H and 163H Motor Graders Hydraulic and Steering System Scarifier Relief Valve
120H and 135H Motor Graders Hydraulic and Steering System Control Valve (Scarifier)
120H and 135H Motor Graders Hydraulic and Steering System Articulated Hitch
14H and 16H Motor Graders Hydraulic and Steering System Metering Pump (Steering)
120H and 135H Motor Graders Hydraulic and Steering System Control Valve (Blade Lift)
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Operator Console
120H and 135H Motor Graders Hydraulic and Steering System Metering Pump (Steering)
120H Motor Grader Hydraulic and Steering System Piston Pump (Hydraulic and Steering)
Test All Graphic Types{0374}
Reusable Parts Test{0374}
Installation Of 3Y6693 Regulator Used With 3Y6880 Conversion Kit{1400}
PRODUCT SUPPORT PROGRAM FOR BRAKE SYSTEM IMPROVEMENTS ON CERTAIN 793F OFF-HIGHWAY TRUCKS
120H and 135H Motor Graders Hydraulic and Steering System Scarifier
120H and 135H Motor Graders Hydraulic and Steering System Combination Valve
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Scarifier Cylinder
120H and 135H Motor Graders Hydraulic and Steering System Sideshift Cylinder
120H and 135H Motor Graders Hydraulic and Steering System Scarifier
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Articulating Hitch
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Circle Drive
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Drawbar
120H and 135H Motor Graders Hydraulic and Steering System Drawbar
120H Motor Grader Hydraulic and Steering System Front Axle
143H and 163H Motor Graders Hydraulic and Steering System Pump Control Valve (Pressure and Flow Compensator)
14H and 16H Motor Graders Hydraulic and Steering System Piston Pump (Hydraulic and Steering)