Servis-Rhino 60C Valve Service, Main Relief Replacement, Spool Seal Installation, Torque Settings

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MAINTENANCE

VALVE SERVICE

Top of valve is defined as side where joysticks are installed.

Before servicing valve, make sure backhoe has boom locked, stabilizers locked, and dipper in down position. Shut off tractor and relieve pressure by activating valve handles. Use a drip pan below backhoe to catch any escaping oil during removal of valve.

WARNING: Failure to lock booms and stabilizer and relieve pressure in valve can cause serious injury from equipment falling when hydraulic pressure is released by the removal of valve.

MAIN RELIEF REPLACEMENT

1.Use a socket to remove main relief from valve housing.

2.Inspect new relief to ensure seal is properly installed, and apply grease around the relief.

3.Ensure that pressure setting stamped on new relief matches the setting of old relief.

4.Install o-rings on relief.

5.Insert relief and torque to 60 ft./lbs.

SPOOL SEAL INSTALLATION

1.Remove the mechanical joystick kit from the top of the valve and the return kit from the bottom.

2.Remove the old o-rings and leave spool in housing, making sure spool is in center position.

3.Lightly oil one seal and insert it in top of valve. Slide the seal into position in the groove in the valve body, making sure that it does not fall into the spool groove.

4.Lightly oil a second o-ring and insert in bottom of valve. Slide the seal into position in the groove in the valve body making sure it does not fall into the spool groove. Do not push on the spool as it may cause the first seal to come out of the groove.

WARNING: If either of the seals falls in the spool groove, it may be cut when the spool moves. If this happens, make sure to gently remove the seal from the groove, and reposition seal after inspecting for cuts in the housing groove once the spool is back in center position.

5.Reinstall the mechanical joystick kit on the top of the valve and return kit on the bottom.

TORQUE SETTINGS

1.Main Relief Body: 60 ft./lbs.

2.Load Check Valve: 15 ft./lbs.

3.Screws: 4 ft./lbs.

F-4139 01/11

Maintenance Section 3-7

© 2011 Alamo Group Inc.

MAINTENANCE

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Contents 60C To the OWNER/OPERATOR/DEALER Table of Contents Page Safety Section Safety SG-4 Safety Safety Equipment Operation Safety Instructions and Practices Safety Safety Safety SBH-1 Transporting Safety Instructions and Practices Safety Storage Safety Instructions and Practices See Your Rhino Dealer Parts InformationDecal Location QTY Level Description Decal Description 4139 01/11 Safety Section Federal Laws and Regulations Page Introduction Section Introduction Bucket Data General DataCylinder Data Introduction Operation Section Controls PRE-OPERATION ChecklistOperating Directions Engine SpeedRight Hand Stabilizer Left Hand StabilizerOperating Backhoe Dumping Bucket Filling BucketTrenching Between a Building & Open Excavators Side Slope Excavating or Trenching Opposite side of the trenchesFinishing Straight Walls Seat AdjustmentMiscellaneous BackfillingStabilizer Lock Mounting and Dismounting BucketsPlacing the Stabilizers Boom LockRemoval from Tractor Storage Transporting the BackhoeMaintenance Section Cylinder Disassembly Cylinder ServiceCylinder Assembly Hydraulic Hoses Beginning of SeasonHydraulic System Reservoir Lubrication Lubrication ChartBucket Tooth Points Tightening Nuts and BoltsHydraulic Troubleshooting Maintenance Torque Settings Valve ServiceMain Relief Replacement Spool Seal InstallationMaintenance Description QTY Parts ListProper Torque for Fasteners Page Rhino Required of the Owner 60C-SOM-01/11 F-4139C Printed U.S.A
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