HYDRAULICS 1.108 Steering valve assembly (22) Removal 1. Stop the engine and chock the machine, apply the parking brake . 2. Refer to page 1.1 and dump hydraulic pressure then disconnect the battery. 3. Remove the front cover from outside of the cab. 4. Make sure the steering valve assembly is free from dirt to avoid contamination of the hydraulic system. 5. Identify and label the electrical connectors on the steering valve. Disconnect the electrical connectors and fit blanks to the connectors and valve. 6. Position a suitable container under the steering valve assembly to collect any oil spillage during removal. 7. Identify and label the hydraulic hoses.
Disconnect all hoses from the steering valve assembly and blank open connections on valve and hoses. Tie hoses clear of valve. 8. From inside the cab, remove the nut, washer, three bolts and washers securing the valve to the steering column. Remove the valve from the machine by disconnecting the splined drive. Installation 1. Installation is the reverse of the above procedure. 2. Make sure all hoses and electrical connectors are connected to the correct service. 3. Refer to page 1.66, check the hydraulic tank level and replenish before the engine is started. 4.
Purge the hydraulic system by starting the engine and operating the steering to fully extend and retract front and rear steering cylinders several times. 5. Refer to Page 1.66, check the hydraulic level and replenish if necessary. 6. Check the steering operates correctly in all modes, (two-wheel steer, four-wheel steer and crab steer).