Components In Engine Compartment, Servicing

Components in engine compartment, servicing


CAUTION!
Before beginning repairs on the electrical system:
Obtain the anti-theft radio security code.
Switch the ignition off.
Disconnect the battery Ground (GND) strap.
After reconnecting battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows.
Immediately plug open connections on A/C components to prevent dirt and moisture contamination.


NOTE: Before carrying out any work on the A/C refrigerant system. Refer to "A/C Refrigerant System, Safety Measures" [1][2]Technician Safety Information
System components identified with an * must only be serviced or replaced after discharging refrigerant system.






1. Damper*
2. Refrigerant hose*
With damper

3. Refrigerant pipe*

4. Ambient temperature switch -F38-
Switches off A/C clutch -N25- at low ambient temperatures
Off at -1°C (30°F)
On at 7°C (45°F)

5. Refrigerant pipe
From receiver drier to expansion valve

6. Low pressure service valve
Only use Kent Moore ACR4 or equivalent

7. A/C pressure switch -F129- or high pressure sensor -G65-
Depending on engine type, refrigerant systems have either an A/C pressure switch -F129- or high pressure sensor -G65- installed. Refer to appropriate wiring diagram.
Checking -F129-, refer Fig. 2 A/C Refrigerant System, Servicing
Checking -G65-, refer Fig. 3 A/C Refrigerant System, Servicing
Removing and installing, refer Fig. 4 A/C Refrigerant System, Servicing
Component can be removed without discharging refrigerant system

8. Expansion valve*

9. Evaporator water drain valve
Checking > 06.00. Refer Fig. 1
New valve design >06.00. Refer Fig. 2

10. A/C cut-out thermal switch -F163-
Switches off A/C clutch -N25- at excessively high coolant temperature
Off at 119°C (246°F)
On at 112°C (234°F)

11. Coolant fan control (FC) control module -293-

12. Refrigerant hose*
From compressor to condenser

13. Refrigerant hose
From expansion valve to compressor
With damper

14. Pressure relief valve*
On compressor
Checking, refer Fig. 1 A/C Refrigerant System, Servicing

15. Condenser*

16. Compressor*
Sanden SD7-V16

17. A/C clutch -N25-
Servicing

18. Receiver drier*

Fig. 1 Evaporator water drain valve > 06.00, checking







- Fold cover -1 - in bulkhead insulation mat -3- upwards.
- Remove drain valve -2- from opening in bulkhead 4-.

Check water drain valve as follows to ensure correct function:
- The water drain valve must not be stuck together.
- Insulation mat must not be deformed or damaged in the area of water drain valve.
- The opening in the sealing cap of the water drain valve must point downwards.


NOTE: When the cover cap -1- is closed it must be flush with the insulation matting. If the cover cap -1- is pushed in too far, the water drain valve sealing cap -2- can become jammed.


Fig. 2 Evaporator water drain valve 06.00 >, checking







NOTE: Design of new evaporator drain valve from 06.00 is essentially maintenance free.