Volkswagen New Beetle. Manual - part 1998

 

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Volkswagen New Beetle. Manual - part 1998

 

 

Fig. 3: Identifying Condenser 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Receiver drier 

The receiver drier acts as a refrigerant reservoir for the system. Any moisture in the system is absorbed in the 
drier desiccant. 

Fig. 4: Identifying Receiver Drier 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Sight glass (if equipped) 

NOTE:

The condenser for the R-134a refrigerant system is identified with a green label.

CAUTION: The receiver drier may be identified with a green R-134a label and MUST 

NOT be used in R-12 systems (the drier desiccant inside is only 
compatible with R-134a refrigerant). Likewise, NEVER use an R-12 receiver 
drier in and R-134a system.

 

2003 Volkswagen New Beetle GLS 

1998-2004 HVAC Air Conditioning - New Beetle

  

With a properly charged A/C system and A/C clutch engaged, the sight glass -arrow- should remain clear and 
bubble free. 

Fig. 5: Locating Sight Glass 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Expansion valve 

The expansion valve restricts and controls refrigerant flow to the evaporator thus lowering refrigerant 
temperature and pressure. 

Fig. 6: Identifying Expansion Valve 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

NOTE:

z

The mixture of R-134a refrigerant and refrigerant (PAG) oil may appear 
milky in the sight glass.  

z

If equipped, sight glass location may not be as illustrated in Fig. 5 .  

 

2003 Volkswagen New Beetle GLS 

1998-2004 HVAC Air Conditioning - New Beetle

  

Evaporator 

Liquid refrigerant entering the evaporator absorbs heat from air passing through the evaporator fins and cools 
the air. As the refrigerant absorbs heat it turns to vapor and then is suctioned by the compressor. 

Fig. 7: Identifying Evaporator 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

O-rings 

O-rings seal connections between A/C system components. 

Fig. 8: Identifying Dimension Of O-Rings 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

NOTE:

The R-134a expansion valve may be identified with a green label.

NOTE:

z

Always use correct size O-rings (dimensions -a- and -b-).  

z

Do not reuse O-rings, always replace. Use only new O-rings that are 

 

2003 Volkswagen New Beetle GLS 

1998-2004 HVAC Air Conditioning - New Beetle

  

Pressure relief valve 

The pressure relief valve is mounted on the compressor or compressor inlet/outlet manifold. At pressures above 
40 bar (580 psi), the pressure relief valve opens to vent excessive pressure. When the system pressure is 
reduced, the valve closes to prevent total refrigerant loss. 

Fig. 9: Identifying Pressure Relief Valve 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

On some models, a cap on the pressure relief valve will pop out if the valve has opened. 

A/C pressure switch -F129- 

compatible with R-134a refrigerant and refrigerant (PAG) oil on R-134a 
systems.  

z

O-rings for use only on R-134a systems may be color coded: red, green, 
violet or black.  

z

Lubricate O-rings with the appropriate refrigerant oil before installing (only 
use PAG oil).  

NOTE:

Depending on engine type, refrigerant systems have either an A/C pressure 
switch -F129- or high pressure sensor -G65- instralled. Refer to system wiring 
diagrams.

 

2003 Volkswagen New Beetle GLS 

1998-2004 HVAC Air Conditioning - New Beetle

  

 

 

 

 

 

 

 

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