Land Pride BH3512 manual Tractor Requirements, Hydraulic System Requirements, Open Center System

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Table of Contents

Section 1: Assembly and Set-Up

Tractor Requirements

!CAUTION!

Your backhoe must be mounted only on a tractor equipped with a Category 2 and 3 hitch. Failure to do so may result in serious injury.

NOTE: In order to maintain steering control on your tractor, ballast may need to be added to your tractor. To determine whether or not to add the ballast, refer to your tractor’s operator manual.

Hydraulic System Requirements

!CAUTION!

The backhoe valve must be compatible with the hydraulic system that will power it. Make sure that if you are powering the backhoe with an open center hydraulic system, the backhoe is set for open center operation. If you are using a closed center hydraulic system, the valve must be set for closed center operation. If you are using a power beyond setup, the valve must be converted for this use. See the appropriate section of this manual on how to convert your valve. If you do not know how your valve is currently setup, check with your Land Pride dealer.

Open Center System

Remove cap from the 1/2” high pressure hose connected to the right hand side of backhoe valve. The high pressure hose may be connected to any high pressure outlet in the tractor system. A tractor remote hydraulic valve is usually the preferable source. An oil quick coupler that is compatible to the oil coupler on the tractor valve is permissible.

The return hose must be connected so that the oil returns directly to the tractor oil sump. DO NOT connect the return hose directly to the tractor remote valve. If the operator would be reversed. This could result in damage to the return hose or the backhoe’s hydraulic valve.

!CAUTION!

The hydraulic valve can be damaged by reverse flow of oil through the valve, disconnecting the return hose while the tractor is running, and by using more than 12 GPM of oil flow while operating. The valve manufacturer will not warrant the valve when damaged under these circumstances.

Closed Center System

Power Beyond Closed Center Kit Part No. 340-084A

Your backhoe cylinders have been filled with oil at the factory. The oil in the unit is compatible with most tractor manufacturers’ oil. Do not move any control levers on the unit until after hydraulic connections to the tractor or the independent hydraulic system have been made.

The Land Pride Backhoe has been designed to be operated at a flow rate of 8-11 GPM.

Since many tractor systems exceed a flow rate specified for your backhoe, the flow may have to be adjusted by throttling the engine RPM down to obtain an acceptable flow rate. By adjusting the flow rate correctly, you will prevent sudden shock loads on the cylinders, pins, hoses seals, etc. This results in a smooth operation and reduced maintenance costs and down time.

!CAUTION!

If you are going to use a closed center tractor hydraulic system to power your Land Pride Backhoe, A Power Beyond and Closed Center Kit must be purchased from your Land Pride Dealer, then you must follow carefully the directions below. Failure to do so may cause extensive damage to your tractor and/or Land Pride Backhoe.

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BH3512 Backhoes 340-131M

7/14/08

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Contents Backhoes Table of Contents For Your Protection Important Safety InformationBe Aware Signal Words Shutdown and StorageTransport Machinery Safely Use Safety Lights and DevicesPractice Safe Maintenance Transporting the Loader and AttachmentKeep Riders Off Machinery Prepare for EmergenciesWear Protective Equipment Avoid High Pressure Fluids Hazard838-380C 838-378C818-339C 839-933C 839-932C Owner Assistance Using This ManualApplication IntroductionBackhoe Operation, Maintenance & Safety Tips Hydraulic System Requirements Assembly and Set-UpTractor Requirements Open Center SystemTable of Contents Choose the Appropriate HosingHydraulic valve can be damaged by Testing Open Center System Testing Procedure for Hydraulic CircuitsChecking a Single Circuit Checking the Cylinders Testing Closed Center SystemHydraulic Testing Chart Return HoseDipper Stick Cylinder Using Tractor Hydraulics All TractorsUsing Tractor Hydraulics John Deere Mounting The BackhoeTransport Lock Bolts Top Link Tractor Lower Links Seat Assembly Bucket InstallationLocking Bar Installation Optional Tractor Lower LinkTransporting The Backhoe Preparing For OperationOperating The Backhoe Operating InstructionsBoom Control FunctionsStabilizers Dipper Stick And BucketDigging at the Correct Angle Digging SuggestionsDipper Stick & Boom Bucket Maintenance and Lubrication MaintenanceBucket Tooth Replacement StorageBucket Pivot LubricationLubrication Bucket Cylinder Base EndBoom Pivot Boom Cylinder Rod EndBoom Cylinder Base End Boom Swing Cylinder Rod End Stabilizer ArmsBoom Swing Cylinder Base End BH35 Series Backhoes Specifications & CapacitiesBH3512 Features and Benefits Features BenefitsTroubleshooting Hydraulic System Problem Cause SolutionLoad drops when valve PerformanceIn-tpi Torque Values ChartAppendix · m Ft-lb Mm x pitch30 BH3512 Backhoes 340-131M Warranty Corporate Office PO. Box 5060 Salina, Kansas 67402-5060 USA