Toro Removal Fig, Installation Fig, Hydraulic, Systems, Sand Pro 2020/3020/5020, Page 4

Removal (Fig. 25)

1.Before removing any parts from the hydraulic sys- tem, park machine on a level surface, engage parking brake, lower attachment, and stop engine.

CAUTION

Operate all hydraulic controls to relieve system pressure and avoid injury from pressurized hy- draulic oil. Controls must be operated with the ignition switch in OFF. Remove key from the igni- tion switch.

2.Remove cover from the midsection of the machine. Pivot seat up. Unscrew knob (5) from lift lever (6).

3.Remove lift valve shroud (2) as follows:

A.Remove self tapping screw (16) from the shroud and frame.

B.Remove both cap screws (3) and lock nuts (38) securing the shroud, lift lever guide (36), and valve lever latch (20) to the frame.

C.Lift shroud from the frame.

4.Clean lift valve (14) and all hydraulic fittings, tubes, and hoses attached to it thoroughly.

5.Label all hydraulic connections for reassembly.

6.Disconnect both hydraulic hoses (30) from the lift valve. Disconnect swivel run T–fitting (12) from the 45o

hydraulic fitting (13). Disconnect hydraulic tube (34) from the 90o hydraulic fitting (4). Allow hoses, tubes, and fittings to drain into a suitable container.

7.Put caps or plugs on disconnected hoses, tubes, and fittings to prevent contamination.

8.Remove cap screw (7) and lock nut (10) securing the pivot (18) to the lift valve stem.

9.Remove four cap screws (15) and lock nuts (11) se- curing the pivot bracket (9) to the lift valve and the lift valve to the frame. Separate lift valve from the frame. Do not further disassemble parts assembled to the lift lever.

IMPORTANT: Match mark positions of hydraulic fit- tings (4 and 13) relative to their ports on the lift valve.

10.Remove remaining hydraulic fittings (4 and 13) and O–rings (31) from the lift valve.

Installation (Fig. 25)

1.Make sure lift valve, hydraulic hoses, fittings, and tubes are cleaned thoroughly.

2.Reinstall O–rings (31) and hydraulic fittings (4 and

13) to the lift valve. Observe match marks when tighten- ing.

3.Position lift valve (14) to the frame. Insert four cap screws (15) through the frame and lift valve. Screw lock nuts (11) to the bottom two cap screws (15).

4.Position lift lever (6) through the frame and attached pivot bracket (9) and other attached parts onto the top two cap screws (15). Screw lock nuts (11) to the top two cap screws (15). Tighten all four lock nuts.

5.Secure pivot (18) to the lift valve stem with cap screw (7) and lock nut (10). Tighten fasteners.

6.Remove caps and plugs from the disconnected hoses, tubes, and fittings

7.Reconnect hydraulic tube (34) to the 90o hydraulic fitting (4). Reconnect swivel run T–fitting (12) to the 45o hydraulic fitting (13). Reconnect both hydraulic hoses

(30)with O–rings (29) to the lift valve. Tighten all con- nections.

8.Attach lift valve shroud (2) as follows:

A.Position valve lever latch (20) and lift lever guide (36) over the lift lever and onto the frame.

B.Insert both cap screws (3) to the shroud.

C.Lower shroud around lift lever (6) and onto frame. Make sure cap screws go through lift lever guide (36) and valve lever latch (20).

D.Attach lock nuts (38) to cap screws. Do not tighten fasteners.

E.Reinstall self tapping screw (16) to the shroud and frame. Tighten screw.

9.Screw knob (5) onto the lift lever (6). Hand tighten.

10.Charge hydraulic system (see Charge Hydraulic System).

11.Run machine and check lift valve, hydraulic hoses, tubes, and fittings for leaks. Tighten as necessary.

12.Adjust lift lever (6) (see Adjust Lift Lever).

13.Reinstall cover to the midsection of the machine.

Hydraulic Systems

Sand Pro 2020/3020/5020 Page 4 – 35 Hydraulic System (Rev. A)