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

Page 27
Image 27
Bush Hog 765H, 965H, 665H, 865H manual Hydraulic Hook-Up