Removal (Fig. 9)
Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
4
3
1
2
1.
5
11
2.
Remove fasteners that secure roof in place. Raise
andsupportrooftoallowaccesstocondenserassembly
(see Roof Assembly Removal in this section).
10
3.
and binary switch on drier--receiver.
Disconnect wire harness connectors from fan motor
6
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.
7
8
9
Figure 10
1.
2.
3.
4.
5.
6.
7.
8.
9.
Heater evaporator assembly
Heater valve
A/C hose: evaporator to compressor
Air duct hose
A/C hose: compressor to condenser
A/C hose: condenser to drier
Heater hose: thermostat to heater valve
Heater hose: heater core to water pump
Heater hose: heater valve to heater core
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.
10. Condensation drain hose (2 used)
11. A/C hose: drier to evaporator
5.
system by a certified A/C service technician.
Have refrigerant evacuated from air conditioning
6.
Label and remove hoses from heater core, evapora-
2
tor and drier--receiver. Immediately cap hoses and fit-
tings to prevent moisture and contaminants from
entering the system.
4
7.
heater and evaporator assembly covers. Slide hose
from covers.
Loosen hose clamp that secures air duct hose to
3
3
8.
er. Remove top cover to access heater and evaporator
assembly.
Remove screws thatsecure top cover to bottom cov-
1
9.
Fig. 12 as a guide.
Disassemble heater andevaporator assembly using
Figure 11
1.
Heater evaporator
Air duct hose
3.
4.
Drain hose
2.
Drier--receiver
NOTE: Thereplacementofthedrier--receiverisrecom-
mended whenever the air conditioning system is
opened.
3.
Slide air duct hose onto heater and evaporator as-
sembly covers and secure with hose clamp.
Installation (Fig. 9)
4.
Remove caps that were placed on hoses and fittings
1.
Assemble heater and evaporator assembly using
during the removal process. Using labels placed during
removal, properly secure hoses to heater core, evapo-
rator and drier--receiver.
Fig. 12 as a guide. Make sure that expansion valve is
covered with insulating tape to prevent condensation is-
sues.
5.
Make sure that condensation hoses are secured to
2.
tomcoverinheadliner.Securetopcovertobottomcover
with removed screws.
Position heater and evaporator assembly into bot-
bottom housing of heater and evaporator assembly and
are routed to cab frame for proper draining of conden-
sate.
Groundsmaster 5910
Page 9 -- 13
Operator Cab
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