Toro 4100-D service manual Radiator Air cleaner hose Upper radiator shroud

Removal (Fig. 69)

1.Park machine on a level surface, lower cutting deck, 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.Unlatch and raise hood.

4.Remove air cleaner hose and upper radiator shroud to allow easier access to hydraulic fan motor (Fig. 70).

CAUTION

The radiator and oil cooler may be hot. To avoid possible burns, allow the engine and cooling systems to cool before removing fan motor.

IMPORTANT: Make sure to not damage the radiator, fan or other machine components while loosening and removing the fan motor.

5.Remove hex nut (item 9) and washer (item 8) that se- cure fan hub and fan assembly to fan motor.

6.Use suitable puller to remove fan hub (with fan at- tached) from fan motor shaft taking care to not damage fan. Position fan assembly away from fan motor.

7.To prevent contamination of hydraulic system during fan motor removal, thoroughly clean exterior of motor and fittings.

8.Disconnect hydraulic hoses from cooling fan motor. Put caps or plugs on fittings and hoses to prevent con- tamination. Tag hydraulic lines for proper assembly.

9.Support fan motor to prevent it from falling. Remove two (2) cap screws (item 20), flat washers (item 21) and lock nuts (item 14) that secure fan motor to fan motor bracket.

10.Carefully lower fan motor and remove from machine.

11.If hydraulic fittings are to be removed from fan motor, mark fitting orientation to allow correct assembly. Re- move fittings from motor and discard O--rings.

Installation (Fig. 69)

1.If fittings were removed from fan motor, lubricate and place new O--rings onto fittings. Install fittings into port openings using marks made during the removal process to properly orientate fittings. Tighten fittings (see Hy- draulic Fitting Installation in the General Information section of this chapter).

IMPORTANT: Make sure to not damage the radiator, oil cooler or other machine components while installing the fan motor.

2.Carefully position fan motor to fan motor bracket. Loosely attach motor to bracket with cap screws (item 20), flat washers (item 21) and lock nuts (item 14).

3.Remove caps or plugs placed during removal to pre- vent contamination. Connect hydraulic hoses to cooling fan motor (see Hydraulic Hose and Tube Installation in the General Information section of this chapter).

4.Tighten fasteners to secure fan motor to bracket.

5.Thoroughly clean tapered surfaces of fan motor shaft and fan hub. Position fan hub (with fan attached) onto motor shaft and secure with washer (item 8) and hex nut (item 9). Torque nut from 27 to 33 ft--lb (37 to

44N--m).

6.Install upper radiator shroud and air cleaner hose (Fig. 70). Make sure that clearance between shroud and cooling fan is at least 0.180” (4.6 mm) at all points.

7.Lower and secure hood.

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Figure 70

1.	Radiator	5.	Air cleaner hose
2.	Upper radiator shroud	6.	Flange nut (4 used)
3.	Screw (4 used)	7.	Cap screw
4.	Flat washer

Hydraulic System

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