Lawn Mower User Manual

Groundsmaster 4100--D Hydraulic SystemPage 4 -- 103
Removal (Fig. 69)
1. Park machineon alevels urface, lowercutting 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 cleanerhose and upper radiatorshroud
to allow easier access to hydraulic fan motor (Fig. 70).
CAUTION
The radiator and oil cooler may be hot. To avoid
possible burns, a llow the engine and cooling
systems to cool before removing fan motor.
IMPORTANT: Make sure tonot damagetheradiator,
fan or other machine components while loosening
and removing the fan motor.
5. Removehexnut(item9)andwasher(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 takingc are to not damage
fan. Position fan assembly away from fan motor.
7. Topreventcontaminationofhydraulicsystemduring
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 toprevent it from falling. Remove
two(2) cap screws(item 20),flatwashers (item21) and
lock nuts (item 14) that secure fan motor to fan motor
bracket.
10.Carefullylowerfanmotorandremovefrommachine.
11.Ifhydraulicfittingsaretoberemovedfromfanmotor,
mark fitting orientation to allow correct assembly. R e-
move fittings from motor and discard O--rings.
Installation (Fig. 69)
1. Iffittingswereremovedfromfanmotor,lubricateand
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 tonot damagetheradiator,
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. Removecapsorplugsplacedduringremovaltopre-
ventcontamination.Connecthydraulichosestocooling
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 cleaner hose
(Fig.70).Makesurethatclearancebetweenshroudand
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