Bush Hog 765H, 965H, 665H, 865H manual Assembly

ASSEMBLY:

BUSH HOG BACKHOE AND A NON BUSH HOG LOADER - OR - BUSH HOG BACKHOE AND LOADER USING PTO PUMP KIT OPTION

IMPORTANT: Improper hydraulic hook-up can cause serious damage to backhoe control valve or other hydraulic components.

The following instructions are to be used to connect the backhoe valve in line with a front end loader valve that is not a Bush Hog loader valve. When connecting the Bush Hog backhoe valve to a loader valve other than one obtained from Bush Hog, the input pressure line from the tractor will be connected to the backhoe valve first. In order to properly plumb the system, the back- hoe valve will require converting to a power beyond valve. The power beyond pressue line from the back- hoe valve will be connected to the input pressure port of the loader valve. The power beyond kit for the back- hoe being assembled must be ordered as a separate item from Bush Hog.

Assembly

IMPORTANT: Improper hydraulic hook-up can cause serious damage to backhoe control valve or other hydraulic components.

1.Install power beyond sleeve (1) into valve cavity, as shown in Figure 24 (Page 33), making sure that O-rings and back-up ring on sleeve are positioned properly and are not pinched or damaged.

2.665H and 765H - Assemble 90 degree O-ring adapter union (2) to power beyond sleeve (1) and direct fitting down through notch in Right Hand foot pad.

865H & 965H - Assemble straight O-ring adapter union (3) to power beyond sleeve (1). Install 90 degree pipe threaded adapter union (2) into adapter union (3).

3.Assemble hydraulic hose (supplied by customer) to adapter union (2) as shown in Figure 24. Hose should have same pressure rating as original pres- sure hose to loader or other accessory valve.

4.Install hose sleeve (4) onto hose assembled in step 3. Position hose sleeve to completely cover adapter union (2) and secure with plastic tie (8) as shown in Figure 24.

CAUTION

Hose sleeve (4) is installed to help protect the backhoe operator from escaping fluid under pressure. If it becomes damaged or lost, replace hose sleeve (4) and plastic ties (8) immediately.

5.Assemble hydraulic hose (see step 3) from back- hoe power beyond port to loader or accessory valve inlet port using fittings (supplied by customer) as needed. Refer to Figure 24.

6.Complete assembly of backhoe “pressure” and “return” hoses as shown in Figure 24 using hoses and tee fitting (supplied by customer).

7.Complete assembly of loader “return” hose to tee fitting as shown.

8.Replace shroud using hardware removed in step

1of “Backhoe Preparation” section.

33