Toro Groundsmaster 4100-D Service Manual page 323

Removal (Fig. 7)
1. Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
2. Remove fasteners that secure roof in place. Raise
and support roof to allow access to heater/evaporator
assembly (see Roof Assembly Removal in this section).
3. Disconnect wire harness connectors from fan motor
and binary switch on drier--receiver.
4. Read the General Precautions for Removing and
Installing Air Conditioning System Components at the
beginning of the Service and Repairs section of this
chapter.
CAUTION
The air conditioning system is under high pres-
sure. Do not loosen any system fitting or compo-
nent until after the system has been completely
discharged by a certified A/C service technician.
5. Have refrigerant evacuated from air conditioning
system by a certified A/C service technician.
6. Label and remove hoses from heater core, evapora-
tor and drier--receiver. Immediately cap hoses and fit-
tings to prevent moisture and contaminants from
entering the system.
7. Remove cable tie that secures air duct hose to heat-
er/evaporator assembly covers. Slide hose from covers.
8. Remove screws that secure heater/evaporator top
cover to bottom cover. Remove top cover to access
heater/evaporator assembly.
9. Disassemble heater/evaporator assembly using Fig.
9 as a guide.
NOTE: The replacement of the drier--receiver is recom-
mended whenever the air conditioning system is
opened.
Installation (Fig. 7)
1. Assemble heater/evaporator assembly using Fig. 9
as a guide. Make sure that expansion valve is covered
with insulating tape to prevent condensation issues.
2. Position heater/evaporator assembly into bottom
cover in headliner. Secure top cover to bottom cover
with removed screws.
Groundsmaster 4110--D
4
1
11
10
1. Heater/evaporator assembly
2. Heater valve
3. A/C hose: evaporator to compressor
4. Air duct hose
5. A/C hose: compressor to condenser coil
6. A/C hose: condenser coil to drier
7. Heater hose: thermostat to heater valve
8. Heater hose: heater core to water pump
9. Heater hose: heater valve to heater core
10. Headliner
11. A/C hose: drier to evaporator
9
6
5
7
1. Fan motor
2. Blower wheel
3. Heater/evaporator core
4. Expansion valve
5. Freeze switch
Page 9 - - 13
5
6
2
9
7
5
3
Figure 8
8
2
1
4
3
Figure 9
6. Resistor guard
7. Bottom housing
8. Top housing
9. Resistor
Operator Cab
7
8
2