Volkswagen Golf Service & Repair Manual: Before operating the air conditioning system after recharging with refrigerant

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General notes on air conditioning systems / Basics for working on refrigerant circuit / Before operating the air conditioning system after recharging with refrigerant

After installing a new air conditioner compressor or filling with fresh refrigerant oil (e.g. after blowing out refrigerant circuit), turn compressor pulley 10 revolutions by hand before starting engine. This will prevent damage to the air conditioner compressor.

–	On 5-cyl. or 10-cyl. diesel engine, turn air conditioner compressor at overload protection 10 times by hand. Then install compressor. This will prevent damage to the air conditioner compressor.

–	Start the engine with the air conditioning system switched off (the air conditioning system magnetic clutch -N25- and the air conditioner compressor regulating valve -N280- are not activated).

–	After the engine has stabilised at its idling speed, switch on the air conditioner compressor and allow the engine to idle for at least 10 minutes at maximum cooling power.

O-ring

Use only O-rings that are resistant to refrigerant R134a and related refrigerant oils. O-rings are no longer colour-coded. Coloured and black O-rings are used. ...

General information on refrigerant circuit

...

Other materials:

Overview of fitting locations - fuel supply system, Golf and Golf GTE
Note Fuel lines are secured with O-type clips. These O-type clips must always be renewed every time they are removed. Start engine if fuel tank was empty. Then start the auxiliary heater repeatedly until the heater d ...

Removing and installing headlight range control motor -V48-/-V49- (dual halogen headlights)
Note Removal and installation are described for the left side. Removal and installation on the right side are carried out in the same way. If headlight range control motor cannot be removed as described, headli ...

Assembly overview - front wheel housing liner
Note Minor differences may be encountered in respect of front wheel housing liner, depending on vehicle model. Only the left side is shown. The procedure for the right side is similar. 1&nbs ...