Volkswagen Golf Service & Repair Manual: Test prerequisites

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / Checking pressures on vehicles / Checking systems with an expansion valve and reservoir (without regulated air conditioner compressor) / Test prerequisites

Radiator and condenser must be clean (clean them if necessary).

The V-belt for air conditioner compressor and alternator is correctly tensioned.

All air ducts, covers and seals are OK and properly installed.

The flaps reach their end positions.

The engine is at operating temperature.

The evaporator and heating do not draw any uncooled air at highest fresh air blower speed.

With the engine running and the air conditioning system set to full power, check the following points:

The fresh air blower is running

The radiator fan is running or is switched on.

The fresh air and air recirculation flap is set to “recirculate”.

The ambient temperature is more than 15^oC.

The temperature switch for evaporator -E33- is correctly fitted and its switching temperatures are correct.

Checking systems with an expansion valve and reservoir (without regulated air conditioner compressor)

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Checking

Switch off ignition. – Connect manifold gauge (air conditioner service station). – Read pressure gauge. ...

Other materials:

Checking inner constant velocity joint
The joint is to be dismantled to renew the grease if it is heavily soiled, or to check the running surfaces of the balls for wear and damage. Note The ball hub and joint body are paired. Mark position in relation to each o ...

Removing and installing tyre pressure sensor, Siemens tyre pressure monitoring system
WARNING After tyre sealant has been used, the tyre pressure sensor of the respective wheel must be renewed. The Siemens system does not have a micro-encapsulated bolt. ...

Exploded view - mechatronic unit
1 - Bolt For securing mechatronic unit for dual clutch gearbox -J743- on gearbox housing. Qty 3, M8 x 35 Always renew after removing. Specified torque and tightening sequence → Fig. ...