140M and 150 Motor Grader Steering Control Valve - Remove Caterpillar


Steering Control Valve - Remove
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1.1. Removal Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
311-1362  Vacuum Gauge Gp 

Start By:

  1. Release the system pressure. Refer to Disassembly and Assembly, "System Pressure - Release".

  2. Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.


------ WARNING! ------

Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.



NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


Note: Put identification marks on all hoses, on all hose assemblies, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.

  1. Engage the parking brake.


    Illustration 1g01397769

  2. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply 138 kPa (20 psi). This procedure will pull a vacuum on the hydraulic system.


    Illustration 2g01413659

  3. Remove bolts (1). Repeat this step for the opposite side of the machine.

  4. Remove cover (2).


    Illustration 3g01404279

  5. Disconnect tube assemblies (3).

  6. Disconnect hose assembly (5).

  7. Remove tube assembly (4).


    Illustration 4g01404306

  8. Remove tube assemblies (6), (7), (8), and (9).


    Illustration 5g01404332

  9. Remove bolts (10). Remove steering control valve (11).

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