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Groundsmaster 4100--D Hydraulic SystemPage 4 -- 103
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. Removehexnut(item 9) and washer (item8)thatse-
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 ofhydraulic 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 fanmotor and remove from machine.
11.Ifhydraulic 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
openingsusingmarksmadeduringtheremovalprocess
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 topre-
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
44 N--m).
6. Install upper radiator shroud and air c leaner hose
(Fig. 70).Makesurethat clearance between shroud and
cooling fan is at least 0.180” (4.6 mm) at all points.
7. Lower and secure hood.
1. Radiator
2. Upper radiator shroud
3. Screw (4 used)
4. Flat washer
5. Air cleaner hose
6. Flange nut (4 used)
7. Cap screw
Figure 70
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Hydraulic
System