Toro 30446 - Page 149

Groundsmaster 4000--D/4010--D Hydraulic SystemPage 4 -- 111
Removal (Fig. 82)
1. Park machine on a level surface, lower cutting
decks, stop engine, apply parking brake and remove
key from the ignition switch.
2. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
3. Topreventcontaminationofhydraulicsystemduring
steering control valve removal, thoroughly clean exteri-
or of control valve and fittings.
NOTE: To ease installation, label the hydraulic lines to
showtheircorrectpositiononthesteeringcontrolvalve.
4. Remove hydraulic lines from steering control valve.
5. Remove steering control valve from machine using
Figure 82 as a guide.
6. If hydraulic fittings are to be r emoved from steering
controlvalve,markfittingorientationtoallowcorrectas-
sembly.RemovefittingsfromvalveanddiscardO--rings
(Fig. 83 or 84).
Installation (Fig. 82)
1. If fittings were removed from steering control valve,
lubricate and place new O--rings onto fittings. Install fit-
tingsintoportopeningsusingmarksmadeduringthere-
moval process to properly orientate fittings (Fig. 83 or
84). Tighten fittings (see Hydraulic Fitting Installation in
the General Information section of this chapter).
2. Install steering control valve using Figure 82 as a
guide.
3. Usinglabels placed during steering c ontrol v alve re-
moval, properly install hydraulic lines to control valve
(seeHydraulicHoseandTubeInstallationin theGener-
al Information section of this chapter).
4. Make sure hydraulic tank is full.
5. Properlyfill hydraulic system (see Charge Hydraulic
System in this section).
1. Steering control valve
2. O--ring
3. 90
o
hydraulic fitting
4. O--ring
5. Straight fitting (4 used)
Figure 83
1
2
4
5
3
GROUNDSMASTER 4000--D
1. Steering control valve
2. O--ring
3. 90
o
hydraulic fitting
4. O--ring
5. Straight fitting (3 used)
6. 45
o
hydraulic fitting
Figure 84
1
2
4
5
3
GROUNDSMASTER 4010--D
4
2
6
Hydraulic
System