Toro Multi Pro 5800 Service Manual page 125

2. Operate all hydraulic controls to relieve hydraulic
system pressure.
3. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
4. Label hydraulic hoses for assembly purposes. Thor-
oughly clean hydraulic hose ends prior to disconnecting
the hoses from steering cylinder.
5. Disconnect hydraulic hoses from steering cylinder
(Fig. 68). Allow hoses to drain into a suitable container.
6. Put caps or plugs on disconnected hoses and fittings
to prevent contamination.
7. Remove lock nut that secures the barrel end of the
steering cylinder to the front axle.
8. Remove cotter pin and slotted hex nut that secure
the shaft end of the steering cylinder to the left side front
axle spindle.
9. Separate cylinder ball joints from axle assembly. Re-
move steering cylinder from machine.
10.If hydraulic fittings are to be removed from steering
cylinder, mark fitting orientation to allow correct assem-
bly. Remove fittings from cylinder and discard O--rings.
11. If ball joint requires removal from cylinder shaft,
count number of revolutions it takes to remove from
shaft so ball joint can be re--installed without affecting
steering.
Installation (Fig. 67)
1. If ball joint was removed from cylinder shaft, install
ball joint onto shaft the same number of revolutions
needed to remove ball joint. Secure ball joint with jam
nut. After ball joint installation, the distance between ball
joint centers should be from 18.620 to 18.740 in (473.0
to 475.9 mm) with the cylinder shaft fully retracted (Fig.
69).
2. If fittings were removed from steering cylinder, lubri-
cate and place new O--rings onto fittings. Install fittings
into cylinder port openings using marks made during the
removal process to properly orientate fittings. Tighten
fittings (see Hydraulic Fitting Installation in the General
Information section of this chapter).
3. Thoroughly clean tapered surfaces of cylinder ball
joints and axle bores.
4. Place rod end seal on cylinder shaft ball joint. Insert
rod ends of cylinder down into attachment points on the
axle assembly.
Multi Pro 5800
5. Secure shaft end of cylinder to the front axle spindle
with slotted hex nut. Torque hex nut from 20 to 25 ft- -lb
(27 to 34 N- -m) and if necessary, continue tightening the
nut until hex nut groove aligns with cotter pin hole in ball
joint. Install cotter pin.
6. Secure barrel end of cylinder to the front axle with
lock nut.
7. Remove caps and plugs from disconnected hoses
and fittings.
8. Lubricate new O--rings and connect hydraulic hoses
to steering cylinder (Fig. 68). Tighten hose connections
(see Hydraulic Hose and Tube Installation in the Gener-
al Information section of this chapter).
9. Check fluid level in hydraulic oil reservoir and adjust
as required.
10.After assembly is completed, operate steering cylin-
der to verify that hydraulic hoses and fittings are not con-
tacted by anything and that there are no leaks. Also,
make sure that a clockwise rotation of the steering wheel
makes a right turn.
3
1. Hose from steering control R port
2. Hose from steering control L port
3. Steering cylinder
Page 4 - - 87
2
Figure 68
18.620" to 18.740"
(473.0 to 475.9 mm)
Figure 69
Hydraulic System
1