Bush Hog Comprehensive Guide for Backhoe Installation and Hydraulic Connections
Page 27

Figure 16

Upper Bar

Upper Brace

Backhoe Mainframe

Tractor Upper

Link Bracket

Link Weldment

Tractor Lower Link

C

10.Align RH and LH link weldment (12) with a hole in the upper bar/brace assembly, as close to the tractor as possible. Use 3/4 x 6” bolt (32), flat washer (25), lockwasher (24), and nut (26). See Figure 15. You may need to return to Step 6 and readjust upward or downward the bolt connection.

11.Remove backhoe from the tractor.

12.Install connector plate (33) to RH and LH lower link weldments (1, 2) using 1/2 x 1-3/4” bolt (34), lockwasher (35), and nut (36). See Figure 15.

13.Tighten all hardware at this time. Check your installation very carefully to be sure all members are

correctly installed and securely fastened.

14.If using optional PTO Pump and Reservoir Kit proceed to that section prior to remounting the back- hoe onto the tractor.

15.Connect hoses from the backhoe control valve to the tractor hydraulic system as described in “Hydraulic Hook-Up” section, prior to remounting the backhoe onto the tractor.

16.Attach bumper plate (37) to backhoe mainframe using two bolts (38), lockwashers, and flat washers (35, 5) once the “Hydraulic Hook-Up” has been com- pleted. See Figure 15.

Hydraulic Hook-Up

If the optional Pump and Reservoir Kit is to be used, refer to the instructions for that kit for proper assembly.

There are four basic methods of hooking up the back- hoe to the hydraulic system of a tractor. The correct method for the particular tractor will depend on the remote couplers available, whether a loader valve or other accessory valve is connected to the tractor sys- tem, and whether the tractor has an open-center sys- tem (constant pumping of oil to control valve and back to reservoir) or a closed-center system (no flow of oil until there is a demand at one hydraulic cylinder). The four hook up methods are described below.

IMPORTANT: Follow instructions carefully when con- necting backhoe to tractor hydraulic system.

The decal shown below is located on the Left Hand toe shield.

25

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Contents Bush HOG Congratulations Backhoes Disclaimer of Implied Warranties & Consequential Damages This Limited Warranty Shall not Apply665H 765H 865H 965H Backhoes Dealer Preparation Check ListBackhoe TractorAdjustments and Inspection TransportationAvoid HIGH-PRESSURE Fluids Safety Decals Child Labor Under 16 Years Old Employee Tractor Operating InstructionsThis Act Seeks Osha RegulationsKeep bystanders a safe distance away Engine SpeedControls Page Transporting the Backhoe Placing the Stabilizers When TransportingDumping the Bucket Filling the BucketBackfilling Side Slope Excavating or TrenchingMiscellaneous Finishing Straight WallsHydraulic System Reservoir Beginning of SeasonBleeding Backhoe Hydraulic System Hydraulic System HosesTooth Replacement Tightening Nuts and BoltsLubrication Removal from Tractor Storage Install the swing safety lock pin as shown in Figures 1Stabilizer Pads 765H, 865H and 965H Hydraulic Trouble ShootingCauses and Corrections Replacing Spool Seals Replace Center Section AssembliesAssembly Hoe mainframe and swing frame to the skid at Be sure hoist Used is suitable, has suffiCient capacity and is in the proper position. Do Do not cut any strapping that fastens the backAssembly Refer to Figures 13 General Description Attaching KIT Instructions For 865HAssembly Hydraulic Hook-Up Closed Center System 665H &765H Backhoe Operation Hook-Up DiagramHydraulic Hook-Up 865H & 965H Hook-Up RequirementsAttaching KIT Instructions For 965H Assembly Refer to For Tractors with OPEN-CENTER Hydraulic Systems Tractor PreparationBackhoe Preparation Assembly of a Bush HOG Backhoe to a Bush HOG Loader Valve Bush HOG Backhoe & Bush HOG Loader Valve Assembly Outlet 11 .5 GPM PTO Pump KIT Assembly10 .5 GPM PTO Pump KIT Or 8 GPM PTO Pump KITPump Plate Positions GPM Pump KITSeries Models 665H and 765H Models 865H Shown 965H Page Bush HOG, L.L.C
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