120H and 135H Motor Graders Hydraulic and Steering System Metering Pump (Steering) Caterpillar


Metering Pump (Steering)
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One revolution of the steering wheel causes the following displacement of oil. ... 159 cubic centimeters (9.73 cubic inches)

Relief valve setting for the cylinder ... 22100 kPa (3200 psi)




Illustration 1g01392273

Top view

(1) Torque for the steering wheel nut ... 47.50 ± 6.50 N·m (35 ± 5 lb ft)




Illustration 2g01392276

Note: Align pin (3) and gerotor star (4) , as shown.




Illustration 3g01394224

View B-B

Tightening sequence

(2) Bolts

Torque for seven dry bolts in the sequence that is shown ... 14.12 ± 2.83 N·m (10 ± 2 lb ft)
Final torque for seven bolts in the sequence that is shown ... 28.25 ± 2.83 N·m (21 ± 2 lb ft)

Information System:

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