Webasto BCT010300C Repair Manual download pdf (Page 43)

Component Replacement - Refrigeration Unit

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9.4 Thermal Expansion Valve (TXV)

Replacement

Read over Section 9.1 before proceeding with TXV

replacement.

1. Switch the power inverter OFF.

2. Remove refrigeration unit cover.

Be sure refrigerant is recovered using the

appropriate equipment before removing the TXV.

Webasto recommends that the system be serviced

using a recovery, recycling and recharging station

such as a Robinair

® unit or similar equipment

designed for R134a refrigerant systems.

3. Remove the protection cover and fasteners.

4. Remove the allen head bolt securing the refrigerant

lines to the TXV.

5. Pull refrigerant lines free. Protect open lines with

plastic caps or wrap to prevent the ingress of

moisture and contaminates.

6. Remove the 2 allen head bolts securing the TXV to

the storage core pipes.

7. Pull the TXV free of the storage core pipes.

8. Inspect TXV and lines for possible contamination by

dirt, water, etc. If contaminated, service system

according to the precautions and recommendations

in Section 6.2.8 after replacing the condenser.

9. Before installing the new TXV and O-rings, inspect

the storage core pipes and refrigerant lines for any

burs. Clean up with fine emory or crocus cloth.

10. Coat storage core pipes and new O-rings with POE

oil and place O-rings on storage core pipes.

11. Install new TXV in reverse order of removal.

12. Coat refrigerant line ends and new O-rings with POE

oil and connect to TXV.

13. Continue reassembly in reverse order of removal

14. Service system according to the precautions and

recommendations beginning with Section 6.2.9.

Figure 39. Thermal Expansion Valve replacement

Torque

12.5 lb-ft.

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 53 54

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Webasto BCT010300C Repair Manual Page 43