AC Recharge problem
#12
05-13-2007 | 06:49 AM
Thread Starter
Joined: May 2007
Posts: 3
RE: AC Recharge problem
Well i took everyone’s advice (sort of).
With references from this forum and also this one http://mywebpages.comcast.net/p928/audi/ac.html , i came up with this-
Stopped by Wal-Mart, bought a $10 adapter kit with 4 different connectors (2 low pressure and 2 high pressure), some UV refrigerant and hose with gauge, Got a re-threader from Sears (for 12mm - 1.5) and re-threaded the bigger low pressure connector. Attached the newly threaded connector (fit perfectly), (The compressor will not engage if its disconnected, don’t try this at home, unless you know what your doing) used a wire to make a circuit (where the pressure sensor was), started the car with AC on and filled the AC while checking a gauge. After a certain point the AC just stops charging, upon checking the temperature it was nice and cold.
Total cost around $21 + the rethreader kit ($65 for a full kit).Please keep in mind, try this only if you know what you are doing. You DO NOT what to over fill your AC system with excessive oil, doing so can cause damage (AC shops evacuate the whole system, to remove oil and air).
With references from this forum and also this one http://mywebpages.comcast.net/p928/audi/ac.html , i came up with this-
Stopped by Wal-Mart, bought a $10 adapter kit with 4 different connectors (2 low pressure and 2 high pressure), some UV refrigerant and hose with gauge, Got a re-threader from Sears (for 12mm - 1.5) and re-threaded the bigger low pressure connector. Attached the newly threaded connector (fit perfectly), (The compressor will not engage if its disconnected, don’t try this at home, unless you know what your doing) used a wire to make a circuit (where the pressure sensor was), started the car with AC on and filled the AC while checking a gauge. After a certain point the AC just stops charging, upon checking the temperature it was nice and cold.
Total cost around $21 + the rethreader kit ($65 for a full kit).Please keep in mind, try this only if you know what you are doing. You DO NOT what to over fill your AC system with excessive oil, doing so can cause damage (AC shops evacuate the whole system, to remove oil and air).
#14
05-14-2007 | 03:06 PM
1st Gear
Joined: Jan 2007
Posts: 216
From:
RE: AC Recharge problem
ORIGINAL: pcr3
Well i took everyone’s advice (sort of).
With references from this forum and also this one http://mywebpages.comcast.net/p928/audi/ac.html , i came up with this-
Stopped by Wal-Mart, bought a $10 adapter kit with 4 different connectors (2 low pressure and 2 high pressure), some UV refrigerant and hose with gauge, Got a re-threader from Sears (for 12mm - 1.5) and re-threaded the bigger low pressure connector. Attached the newly threaded connector (fit perfectly), (The compressor will not engage if its disconnected, don’t try this at home, unless you know what your doing) used a wire to make a circuit (where the pressure sensor was), started the car with AC on and filled the AC while checking a gauge. After a certain point the AC just stops charging, upon checking the temperature it was nice and cold.
Total cost around $21 + the rethreader kit ($65 for a full kit).Please keep in mind, try this only if you know what you are doing. You DO NOT what to over fill your AC system with excessive oil, doing so can cause damage (AC shops evacuate the whole system, to remove oil and air).
Well i took everyone’s advice (sort of).
With references from this forum and also this one http://mywebpages.comcast.net/p928/audi/ac.html , i came up with this-
Stopped by Wal-Mart, bought a $10 adapter kit with 4 different connectors (2 low pressure and 2 high pressure), some UV refrigerant and hose with gauge, Got a re-threader from Sears (for 12mm - 1.5) and re-threaded the bigger low pressure connector. Attached the newly threaded connector (fit perfectly), (The compressor will not engage if its disconnected, don’t try this at home, unless you know what your doing) used a wire to make a circuit (where the pressure sensor was), started the car with AC on and filled the AC while checking a gauge. After a certain point the AC just stops charging, upon checking the temperature it was nice and cold.
Total cost around $21 + the rethreader kit ($65 for a full kit).Please keep in mind, try this only if you know what you are doing. You DO NOT what to over fill your AC system with excessive oil, doing so can cause damage (AC shops evacuate the whole system, to remove oil and air).
#15
05-14-2007 | 03:06 PM
1st Gear
Joined: Jan 2007
Posts: 216
From:
RE: AC Recharge problem
ORIGINAL: pcr3
Well i took everyone’s advice (sort of).
With references from this forum and also this one http://mywebpages.comcast.net/p928/audi/ac.html , i came up with this-
Stopped by Wal-Mart, bought a $10 adapter kit with 4 different connectors (2 low pressure and 2 high pressure), some UV refrigerant and hose with gauge, Got a re-threader from Sears (for 12mm - 1.5) and re-threaded the bigger low pressure connector. Attached the newly threaded connector (fit perfectly), (The compressor will not engage if its disconnected, don’t try this at home, unless you know what your doing) used a wire to make a circuit (where the pressure sensor was), started the car with AC on and filled the AC while checking a gauge. After a certain point the AC just stops charging, upon checking the temperature it was nice and cold.
Total cost around $21 + the rethreader kit ($65 for a full kit).Please keep in mind, try this only if you know what you are doing. You DO NOT what to over fill your AC system with excessive oil, doing so can cause damage (AC shops evacuate the whole system, to remove oil and air).
Well i took everyone’s advice (sort of).
With references from this forum and also this one http://mywebpages.comcast.net/p928/audi/ac.html , i came up with this-
Stopped by Wal-Mart, bought a $10 adapter kit with 4 different connectors (2 low pressure and 2 high pressure), some UV refrigerant and hose with gauge, Got a re-threader from Sears (for 12mm - 1.5) and re-threaded the bigger low pressure connector. Attached the newly threaded connector (fit perfectly), (The compressor will not engage if its disconnected, don’t try this at home, unless you know what your doing) used a wire to make a circuit (where the pressure sensor was), started the car with AC on and filled the AC while checking a gauge. After a certain point the AC just stops charging, upon checking the temperature it was nice and cold.
Total cost around $21 + the rethreader kit ($65 for a full kit).Please keep in mind, try this only if you know what you are doing. You DO NOT what to over fill your AC system with excessive oil, doing so can cause damage (AC shops evacuate the whole system, to remove oil and air).
#17
05-14-2007 | 03:56 PM
Joined: Nov 2005
Posts: 12,826
From:
RE: AC Recharge problem
2002 to 2007 for future ref
Servicing refrigerant circuit
HD = High-pressure end
ND = Low-pressure end
1-
Air conditioning system compressor regulating valve -N280-
q
Not to be removed
q
Checking actuation and operation
Note[/align]
The air conditioning system compressor regulating valve -N280- is actuated by the operating and display unit, Climatronic control unit -J255- and controls the pressure on the low-pressure end of the refrigerant circuit.
2-
Compressor
q
Detaching refrigerant pipe at compressor/attaching
q
Replace O-rings at connections; for version refer to
q
To protect compressor, engine is only to be started following complete assembly of refrigerant circuit
q
Detaching poly V-belt
q
Removing and installing compressor
q
Different compressors depending on country version and engine
q
On vehicles with 8-cyl. engine, the compressor is not driven via a belt, but rather by way of a shaft
q
Following the installation of a new compressor or adding fresh refrigerant oil (e.g. after blowing out the refrigerant circuit), give the compressor 10 turns by hand after fitting and prior to initial start-up to prevent compressor damage
3-
Oil drain plug
q
“Denso” compressors are fitted with a sealing ring which is always to be replaced
q
Tightening torque: 30 Nm
q
Compressor must be removed before screwing out to drain off refrigerant oil. Crank compressor by way of pulley or drive unit to accelerate drainage of refrigerant oil
4-
Pulley/compressor drive unit
q
Replacing pulley
q
Checking/replacing compressor drive unit
5-
Pressure relief valve, 10 Nm
q
Not to be removed
6-
Connection with valve
7-
High-pressure sender -G65-
q
Removing and installing
q
Checking signal
8-
Condenser
q
Replace O-rings at connections; for version refer to
q
Detaching and re-attaching refrigerant pipes
q
Removing and installing condenser
9-
Cap
q
With seal
q
Always to be screwed on
10-
Service connection
q
High-pressure end
q
For service station for measuring, draining and filling
11-
Screw connection in refrigerant pipe
q
Replace O-ring; for version refer to
q
Tightening torque: 15 Nm
12-
Restrictor
q
Fitted in screw connection
q
O-ring (7.5 mm/1.5 mm)
q
Replace restrictor with O-ring; for version refer to
q
Removing and installing
q
Lubricate O-ring slightly with refrigerant oil before fitting restrictor
13-
Evaporator
q
Replace O-rings at connections; for version refer to
q
Tightening torque: Hexagon nut 25 Nm
q
Removing and installing refrigerant pipe
q
Removing and installing
14-
Service connection
q
Low-pressure end
15-
Cap
q
With seal
q
Always to be screwed on
16-
Reservoir
q
Replace O-rings at connections; for version refer to
q
Tightening torque: Hexagon socket-head bolt at block connection 25 Nm
q
Removing and installing
[IMG]local://upfiles/12092/5769C14FF09F46B5813617755BA644C5.jpg[/IMG]
Servicing refrigerant circuit
HD = High-pressure end
ND = Low-pressure end
1-
Air conditioning system compressor regulating valve -N280-
q
Not to be removed
q
Checking actuation and operation
Note[/align]
The air conditioning system compressor regulating valve -N280- is actuated by the operating and display unit, Climatronic control unit -J255- and controls the pressure on the low-pressure end of the refrigerant circuit.
2-
Compressor
q
Detaching refrigerant pipe at compressor/attaching
q
Replace O-rings at connections; for version refer to
q
To protect compressor, engine is only to be started following complete assembly of refrigerant circuit
q
Detaching poly V-belt
q
Removing and installing compressor
q
Different compressors depending on country version and engine
q
On vehicles with 8-cyl. engine, the compressor is not driven via a belt, but rather by way of a shaft
q
Following the installation of a new compressor or adding fresh refrigerant oil (e.g. after blowing out the refrigerant circuit), give the compressor 10 turns by hand after fitting and prior to initial start-up to prevent compressor damage
3-
Oil drain plug
q
“Denso” compressors are fitted with a sealing ring which is always to be replaced
q
Tightening torque: 30 Nm
q
Compressor must be removed before screwing out to drain off refrigerant oil. Crank compressor by way of pulley or drive unit to accelerate drainage of refrigerant oil
4-
Pulley/compressor drive unit
q
Replacing pulley
q
Checking/replacing compressor drive unit
5-
Pressure relief valve, 10 Nm
q
Not to be removed
6-
Connection with valve
7-
High-pressure sender -G65-
q
Removing and installing
q
Checking signal
8-
Condenser
q
Replace O-rings at connections; for version refer to
q
Detaching and re-attaching refrigerant pipes
q
Removing and installing condenser
9-
Cap
q
With seal
q
Always to be screwed on
10-
Service connection
q
High-pressure end
q
For service station for measuring, draining and filling
11-
Screw connection in refrigerant pipe
q
Replace O-ring; for version refer to
q
Tightening torque: 15 Nm
12-
Restrictor
q
Fitted in screw connection
q
O-ring (7.5 mm/1.5 mm)
q
Replace restrictor with O-ring; for version refer to
q
Removing and installing
q
Lubricate O-ring slightly with refrigerant oil before fitting restrictor
13-
Evaporator
q
Replace O-rings at connections; for version refer to
q
Tightening torque: Hexagon nut 25 Nm
q
Removing and installing refrigerant pipe
q
Removing and installing
14-
Service connection
q
Low-pressure end
15-
Cap
q
With seal
q
Always to be screwed on
16-
Reservoir
q
Replace O-rings at connections; for version refer to
q
Tightening torque: Hexagon socket-head bolt at block connection 25 Nm
q
Removing and installing
[IMG]local://upfiles/12092/5769C14FF09F46B5813617755BA644C5.jpg[/IMG]
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