Toro Groundsmaster 3280-D Service Manual page 101

Removal (Figs. 41 and 42)
1. Park the machine on a level surface, engage the
parking brake, lower the cutting deck (or implement) and
stop the engine. Remove the 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. Remove fuel tank from machine (see Fuel Tank Re-
moval in Chapter 3 -- Gasoline Engine or Chapter 4 --
Diesel Engine).
4. Label all hydraulic connections for assembly pur-
poses. Clean hydraulic hose ends prior to disconnecting
the hoses.
CAUTION
Operate all hydraulic controls to relieve system
pressure and avoid injury from pressurized hy-
draulic oil.
5. Disconnect hose connections from hydraulic fittings
on lift control valve. Allow hoses to drain into a suitable
container.
6. Put caps or plugs on disconnected hoses and fittings
to prevent contamination.
7. Remove cotter pin (item 14) and pin (item 13) that se-
cure link tube (item 20) to control valve.
8. Remove two (2) cap screws (item 11), lock washers
(item 12) and flat washers (item 10) that secure lift con-
trol valve to machine.
9. Remove control valve from the machine.
10.Remove hydraulic fittings as necessary from the
control valve. Discard all removed o--rings.
Installation (Figs. 41 and 42)
1. Coat new o--rings lightly with clean hydraulic oil.
Install all removed hydraulic fittings with new o--rings to
the lift control valve.
2. Position lift control valve to machine frame. Secure
control valve to machine with two (2) cap screws (item
11), lock washers (item 12) and flat washers (item 10).
3. Secure link tube (item 20) to control valve with pin
(item 13) and cotter pin (item 14).
4. Remove all caps or plugs from hydraulic hoses and
fittings.
Groundsmaster 3280--D/3320
5. Connect hydraulic hoses to hydraulic fittings on lift
control valve.
6. Install fuel tank to machine (see Fuel Tank Installa-
tion in Chapter 3 -- Gasoline Engine or Chapter 4 -- Die-
sel Engine).
7. Check hydraulic fluid level in reservoir (front axle)
and adjust as required (see Traction Unit Operator's
Manual).
8. Follow Hydraulic System Start--up procedures.
9. Check counterbalance valve adjustment (see Trac-
tion Unit Operator's Manual).
2
1
8
7
6
1. Lift control valve
2. Hydraulic adapter
3. Hydraulic tube
4. Counterbalance manifold
Rev. A
Page 5 - - 55
3
2
5
Figure 42
5. Hydraulic fitting
6. Cap screw (2 used)
7. Lock washer (2 used)
8. Flat washer (2 used)
Hydraulic System
4