Removal (Fig. 26)
Before removing any parts from the hydraulic sys-
tem, park machine on a level surface, engage parking
brake, lower attachment, and stop engine.
Installation (Fig. 26)
1.
1. Make sure lift valve, hydraulic hoses, fittings, and
tubes are cleaned thoroughly.
2.
(2,
Reinstall O–rings (27 and 28) and hydraulic fittings
8, 9, and 10) to the lift valve. Observe match marks
CAUTION
when tightening.
3.
(7)
Position lift valve to the frame. Insert two cap screws
through the bottom two holes of frame bracket frame
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.
and lift valve. Screw lock nuts (1) to the bottom two cap
screws (7).
4. Position lift lever to the lift valve. Insert two cap
screws (7) through flat washer (24), pivot bracket (6),
and top two holes of lift valve and frame bracket. Screw
lock nut (1) to the top cap screw (7). Tighten all three lock
nuts and four cap screws.
2.
Remove cover from the midsection of the machine.
Unscrew knob (5) from lift lever (20).
3.
to the lift valve (see Control Panel Removal in Chapter
6
Remove control panel (right fender) to gain access
5.
cap screw (3) and lock nut (4). Tighten fasteners.
Secure welded pivot (21) to the lift valve stem with
– Wheels, Brakes, and Miscellaneous).
6.
hoses, tubes, and fittings
Remove caps and plugs from the disconnected
4.
tings, tubes, and hoses attached to it thoroughly.
Clean lift valve assembly (11) and all hydraulic fit-
7.
90
Reconnect hydraulic tube (31) and O–ring (26) to
o hydraulic fitting (2).
5.
6.
O–rings (29) from hydraulic fittings (8 and 9). Allow
hoses and fittings to drain into a suitable container.
Label all hydraulic connections for reassembly.
Disconnect both hydraulic hoses (32 and 33) and
8.
and O–rings (26) to hydraulic T–fitting (10).
Reconnect hydraulic hose (34), hydraulic tube (35),
9.
rings (29) to hydraulic fittings (8 and 9).
Reconnect both hydraulic hoses (32 and 33) and O–
7.
and O–rings (26) from hydraulic T–fitting (10). Allow
hose, tube, and fitting to drain into a suitable container.
Disconnect hydraulic hose (34), hydraulic tube (35),
10.
Reinstall control panel (see Control Panel Installa-
tion in Chapter 6 – Wheels, Brakes, and Miscellaneous).
8.
90
into a suitable container.
Disconnect hydraulic tube (31) and O–ring (26) from
o hydraulic fitting (2). Allow tube and fitting to drain
11.
Charge hydraulic system (see Charge Hydraulic
System).
9.
and fittings to prevent contamination.
Put caps or plugs on disconnected hoses, tubes,
12.
tubes, and fittings for leaks. Tighten as necessary.
Run machine and check lift valve, hydraulic hoses,
10.
the welded pivot (21) to the lift valve stem.
Remove cap screw (3) and lock nut (14) securing
13.
Adjust lift lever (20) (see Adjust Lift Lever).
11.
Remove four cap screws (7), lock washer (24) and
lock nuts (1) securing the pivot bracket (6) 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 (2,8,9 and 10) relative to their ports on the lift
valve.
12.
Remove remaining hydraulic fittings (2, 8, 9, and 10)
and O–rings (27 and 28) from the lift valve.
Sand Pro 2020/3020/5020
Page 4 – 37
Hydraulic System (Rev. A)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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