120H Motor Grader Hydraulic and Steering System Front Axle Caterpillar


Front Axle
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120H Motor Grader Hydraulic and Steering System [SENR9123]
FRAME AND BODY
AXLE GP
120H Motor Grader Hydraulic and Steering System Front Axle



Illustration 1g01393883

Rear view

(1) Wheel lean cylinder

(2) Steering cylinders

(3) Torque for two full nuts ... 700 ± 27 N·m (520± 20 lb ft)

(4) Torque for two nuts ... 120 N·m (90 lb ft)

Note: As needed, tighten nuts (4) more in order to align the cotter slot.




Illustration 2g01393898

Section A-A




Illustration 3g01393897

Section B-B

(G) Distance from arm assembly to end of pin ... 45.3 ± 0.3 mm (1.78 ± 0.01 inch)

(H) Minimum gap ... 0.8 mm (0.03 inch)

(J) Depth of bearing ... 8.0 ± 0.5 mm (0.31 ± 0.02 inch)




Illustration 4g01393890

Section D-D

(5) 2G-3865 Shim

Quantity for each wheel ... 3
Thickness ... 0.13 mm (0.005 inch)

(6) Torque for three bolts in each spindle ... 130 ± 7 N·m (95 ± 5 lb ft)




Illustration 5g01393892

Section C-C




Illustration 6g01393894

Section E-E

(7) Before you assemble the pin into the bearings in the front axle, apply grease to the pin and the bearings.

(8) Thickness of washer ... 1.52 ± 0.23 mm (0.060 ± 0.009 inch)

Note: As needed, use washers to achieve a maximum gap for dimension (L) of 1.5 mm (0.06 inch).

(K) Depth of bearing ... 7.2 ± 0.4 mm (0.28 ± 0.02 inch)




Illustration 7g01393896

Section F-F

(M) Exposed length of pin ... 2.0 ± 0.5 mm (0.08 ± 0.02 inch)




Illustration 8g01393914

Top view

(10) Lean bar

(9) Fill each compartment of the front bearing with the specified lubricant. Fill each compartment to the bottom edge of the filler hole. Use 7X-7856 Transmission/Drive Train Oil to fill each compartment of the front bearing.

(11) Torque for nut on each steering cylinder ... 340 ± 40 N·m (250 ± 30 lb ft)

(12) Torque for two locknuts on the clamps ... 75 ± 7 N·m (55 ± 5 lb ft)

(14) Torque for two nuts ... 140 ± 14 N·m (105 ± 10 lb ft)

Note: As needed, tighten nuts (14) more in order to align the cotter slot.

(P) Distance from the clamps to the rod ends of the tie rod (13) ... 6.4 mm (0.25 inch)




Illustration 9g01393895

Section N-N

(R) Exposed length of pin ... 2.0 ± 0.5 mm (0.08 ± 0.02 inch)

Information System:

120H and 135H Motor Graders Hydraulic and Steering System Drawbar
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Drawbar
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 Articulating Hitch
120H and 135H Motor Graders Hydraulic and Steering System Scarifier
120H and 135H Motor Graders Hydraulic and Steering System Sideshift Cylinder
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Scarifier Cylinder
120H and 135H Motor Graders Hydraulic and Steering System Combination Valve
120H and 135H Motor Graders Hydraulic and Steering System Scarifier
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Piston Pump (Hydraulic and Steering)
143H and 163H Motor Graders Hydraulic and Steering System Scarifier Relief Valve
120H and 135H Motor Graders Hydraulic and Steering System Control Valve (Scarifier)
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)
143H and 163H Motor Graders Hydraulic and Steering System Ripper Control Valve
14H and 16H Motor Grader Hydraulic and Steering System Metering Pump (Steering)
12H, 140H and 160H Motor Graders Hydraulic and Steering System Ripper Control Valve
12H, 140H, 143H, 160H and 163H Motor Graders Hydraulic and Steering System Control Valve (Blade Lift)
143H and 163H Motor Graders Hydraulic and Steering System Sideshift Control Valve
143H and 163H Motor Graders Hydraulic and Steering System Circle Drive Control Valve
120H and 135H Motor Graders Hydraulic and Steering System Control Valve (Blade Tip)
143H and 163H Motor Graders Hydraulic and Steering System Centershift Control Valve
143H and 163H Motor Graders Hydraulic and Steering System Articulation Control Valve
143H and 163H Motor Graders Hydraulic and Steering System Blade Lift Relief Valve