V871808204903915

Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Condition
Applicable Vehicles
Model(s)
Year
Eng. Code
Trans. Code
VIN Range
From
VIN Range To
All Models
2018-2022
All
All
All
All
Revision Table
Instance Number
Published Date
Version Number
Reason For Update
2049039/15
12/13/21
87-18-08
Adding MY 2021 Atlas and
Coupe bumper removal labor
operation and updating note
for 2021 Atlas and Coupe
since 3/1/2021.
2049039/14
9/9/21
87-18-08
Add “Atlas only” to clamping
washer in parts table.
2049039/1
11/9/17
V871713
Original publication.
Debris can be dispersed throughout the refrigerant circuit after A/C component damage. In order to
maintain A/C operating efficiency, it is important to flush the refrigerant circuit after A/C component
repairs.
Note:
This bulletin must be read in its entirety before beginning repair.
Technical Background
In cases where an air conditioning system component (such as a compressor or other system
component) has failed and debris from the compressor or component is circulated throughout the
refrigerant circuit, the refrigerant circuit must be cleaned of any and all debris or damage to the
replacement components will result.
Note:
Any replacement of A/C compressors-regardless of the reason for failure must complete the AC flush
procedure to ensure the proper amount of oil is re-introduced into the refrigerant system.
Page 1 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Production Solution
No production change required.
Service
Tools
Use an approved R1234yf servicing machine and the
R1234yf Flush Kit RTI360831840 (Figure 1).
Used for effective refrigerant handling and air
conditioning circuit flushing after air conditioning
component failure.
Figure 1. The VAS581005 Air Conditioning
Service System with Flushing Device.
Page 2 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
The VAS 6338/1 Adapter Set for Refrigerant Circuits along with an additional adapter VAS 6338/38 for
the expansion valve bypass this kit, contains the adapters necessary to complete a thorough flush
operation of a contaminated circuit.
Elsa contains the technical information for each model regarding the necessary adapter
applications and connections of the servicing station for the flush operation. See Heating,
Ventilation & Air Conditioning >> Refrigerant R1234yf-Servicing >> 00 General Technical
Data>> Refrigerant Circuit removing contaminates>> Refrigerant Circuit, Flushing with
Refrigerant R1234yf in Elsa.
All other refrigerant recovery, evacuation and recharge operations are performed using the usual
procedure specified in Elsa. An operations manual will accompany each servicing station that will
describe operation of the unit.
Procedure
Front A/C:
1. If an air conditioning component has been diagnosed as the root cause of the failure, and this
particular component has been verified to have released debris through the circuit, continue with the flush
procedure.
2. Switch the power to the servicing station ON and begin by recovering the refrigerant from the system
through the normal service fittings.
Note:
For all compressor replacements it is mandatory to flush the system of all oil in the system. The
replacement compressor comes with a full charge of oil for a complete A/C system.
Tip:
During the entire process avoid interrupting the power to the station. The station's internal memory will
keep a log of all operations and can conveniently be recalled and printed. If the power is interrupted, the
station will lose the memory of the process, and the oil volume recovered, oil volume added, refrigerant
volume recovered, etc. will have to be manually determined.
3. Disconnect the service hoses from the AC service ports of the refrigerant circuit.
The VAS 6338/1 adapters will be used to bypass the following:
 Compressor.
 Expansion Valve.
 Rear AC lines to rear AC unit (If Equipped)
 Rear AC unit Expansion Valve (If Equipped)
Page 3 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Note:
For models with receiver drier desiccant cartridge the desiccant cartridge must be removed for the
flushing process.
For vehicles where the receiver drier is located on the condenser and DOES NOT have a remove-able
desiccant cartridge, the receiver drier must be left in the system and flushed through.
After the flush procedure is complete replace the receiver drier or drier cartridge.
4. Install the approved R1234yf servicing machine.
5. Remove Receiver Drier. Refer to Elsa Repair Manual.
Note:
For Atlas MY2018-2020, the front bumper does not need to be removed as stated in the Elsa repair
manual. Since 3/1/2021, MY2021 Atlas and Cross Sport the bumper must be removed.
When removing front grille ensure ignition is switched OFF and negative battery cable is disconnected
before disconnecting the front distance regulation module.
6. Remove receiver drier cartridge.
Reinstall cartridge cap with O-ring. (Figure 2)
Figure 2. Location of the Receiver Drier
Page 4 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
7. Remove expansion valve and install flush plate
VAS 6338/38. (Figure 3)
Figure 3. Installation of front expansion valve
bypass adaptor VAS 6338/38.
Note:
(Atlas Only) The rear A/C unit refrigerant lines must
be disconnected and replaced with block off
adaptors VAS 6338/5 and VAS 6338/63 before
performing the front A/C unit flush procedure.
8. (Atlas Only) Disconnect rear refrigerant lines and
install adaptors VAS 6338/5 and VAS 6338/63 as
shown. (Figure 4a, 4b)
Figure 4a. Installation of high side rear A/C Line
connection block adaptor VAS 6338/63.
Page 5 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Figure 4b. Installation of Low side rear A/C Line
connection block adaptor VAS 6338/5.
9. Remove A/C Recovery machine high side
coupler from hose.
Install flush adaptor VAS 6338/48 to high side A/C
recovery machine hose. (Figure 5)
Note:
You do not have to remove low side A/C hose
coupler. The low side coupler will be connected to
the flush tank filter adaptor.
Figure 5. A.C hose adaptor 6338/44.
Page 6 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
10. Disconnect A/C compressor hoses from the
compressor.
Install flush adaptor VAS 6338/3 on the high side
compressor hose.
Install flush adaptor VAS 6338/12 on low side
compressor hose. (Figure 6)
Figure 6. Installation of VAS 6338/3 and 6338/12.
11. Attach high side A/C Recovery machine hose
with VAS 6338/48 fitting to low side compressor
hose adaptor VAS 6338/12. (Figure 7)
Note:
This connection strategy allows for a system flush
in the opposite direction of the normal refrigerant
flow.
Figure 7.
Page 7 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
12. Connect the low side A/C machine coupler to
the flush tank filter adaptor. (Figure 8)
Figure 8.
13. Connect flush tank hose (Yellow) to the high
side compressor hose adaptor VAS 6338/3. (Figure
9)
Figure 9.
14. Perform an extended 3 cycle flush.
15. After the flush process completes remove any adapters that were installed from the VAS 6338/1.
16. (Atlas Only) Proceed to section for cleaning the rear A/C unit. All others models continue to step 17.
17. Install a new Expansion Valve and Receiver Drier Cartridge. Reassemble all refrigerant lines.
Page 8 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
18. Print the extended flush log of the job and attach to the repair order.
19. Connect the station in the usual manner through the service fittings and perform the normal
evacuation and refrigerant recharge operations.
Note:
For Atlas a rear A/C unit flush must be performed before vacuum testing and recharging.
Atlas Rear A/C Unit
The flush process will be repeated for the additional rear air conditioning unit according to the repair
information in Elsa.
20. Lower the exhaust by removing the rear
exhaust clamp and single rubber hanger. (Figure
10)
Figure 10.
Page 9 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
21. Remove the cross bar located in the center
under carriage area. (Figure 11)
Figure 11.
22. Remove middle heat shield from under
previously removed cross bar to access rear
expansion valve. (Figure 12)
Note:
Replace the clamping washer before reinstalling the
heat shield.
Figure 12.
Page 10 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
23. Remove rear expansion valve and install
VAS6338/38 as shown. (Figure 13)
Figure 13. Location of rear air conditioning unit
expansion valve.
24. Connect the VAS 6338/3 and VAS 6338/60 to
the rear refrigerant A/C lines. (Figure 14)
Page 11 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Figure 14. Location and connection of the
adaptors for the rear unit A/C lines
Note:
Later models may have a dowel pin in the high
pressure refrigerant line that does not allow the VAS
6338/60 to be installed. The pin must be temporarily
removed to install the VAS 6338/60. . DO NOT cut
the pin flush with the refrigerant. Side cutters can be
used to remove the pin and pliers to reinstall the pin
(Figure 15 and 16).
Figure 15. Removal of dowel pin.
Page 12 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Figure 16. Installation of rear refrigerant line dowel
pin.
25. Connect the VAS 6338/48 to adaptor VAS
6338/60.
26. Connect flush tank hose (Yellow) to the high
side compressor hose adaptor VAS 6338/3. (Figure
17)
Note:
Reverse flushing not required for rear A/C unit
cleaning.
Page 13 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Figure 17. Attaching service station and flush
hoses to rear A/C lines.
27. Perform an extended 3 cycle flush on the rear A/C unit.
Note:
Do not use the short flush option in the ACX1281 service menu. This is for clearing the ACX1281
machine hoses only and does not flush the vehicle refrigerant system.
28. When complete, remove any adapters that were installed from the VAS 6338/1.
29. Install a new rear Expansion Valve and reinstall all the refrigerant lines.
30. Connect the station in the usual manner through the service fittings and perform the normal
evacuation and refrigerant recharge operations.
31. Print the extended flush log of the job and attach to the repair order.
32. Connect the station in the usual manner through the service fittings and perform the normal
evacuation and refrigerant recharge operations
A/C Components Replacement
The following components must be replaced:
 Expansion Valve
 Rear Expansion Valve (If equipped)
 Receiver-drier/cartridge
Page 14 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Warranty
Note:
The procedure outlined in this Technical Bulletin must be included with the warranty repair(s) and not
claimed independently.
You may claim $8.50 per A/C System flush for the A/C System Flush filter 0268056100 (which represents
1/5 the cost of a replacement filter)
A print out from the approved R1234yf servicing machine of the flush procedure must be attached to the
warranty claim.
To determine if this procedure is covered under Warranty, always refer to the Warranty Policies
and Procedures Manual 1)
Model(s)
Year(s)
Eng. Code(s)
Trans. Code(s)
VIN Range
From
VIN Range To
All Models
2018-2022
All
All
All
All
SAGA Coding
Claim Type:
Service Number:
Use Service Number
of Defective
Component
Use applicable Claim Type 1)
Damage
Code
Use damage
code
appropriate for
root cause of
failure
Labor Operation 3) : Refrigerant drain and fill
HST
Damage Location
(Depends on
Service No.)
Parts Manufacturer
--
Use applicable
when indicated in
Elsa (L/R)
Use Vendor code from
failed component
(removed part)
_ _ _2)
8703XXXX = Claim appropriate SRT for vehicle
and engine in Elsa
(Except Atlas)
Labor Operation 3): Air Conditioner Check, All
Vehicles. (Except Atlas)
87010150 = See Elsa for the latest time units
Labor Operation 3): Air Conditioner Clean, All
Vehicles, Front A/C only (except Atlas)
87012999 = 110 TU
Labor Operation 3): Replace Receiver-Drier
(Except Atlas)
8755XXXX = Claim appropriate SRT for vehicle and
engine in Elsa
Page 15 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Labor Operation 3): Replace Expansion Valve, if
equipped. (Except Atlas)
8770XXXX = Claim appropriate SRT for vehicle and
engine in Elsa
Labor Operation 3): R/I Front Bumper
Atlas Coupe only)
6329XXXX = Claim appropriate SRT for vehicle and
engine in Elsa
(MY2021
Atlas with Rear A/C unit.
Labor Operation 3) : Refrigerant drain and fill
87031700 = See Elsa for the latest time units
Labor Operation 3): Air Conditioner Check
87010150 = See Elsa for the latest time units
Labor Operation 3): Air Conditioner Clean
87013099 = 300 TU
Labor Operation 3): R/I Front Bumper
Atlas only)
6329XXXX = Claim appropriate SRT for vehicle and
engine in Elsa
(MY2021
Labor Operation 3): Front grille remove and
reinstall.
66051999 = 20 TU
Labor Operation 3): Replace Receiver-Drier
87555550 = See Elsa for the latest time units
Labor Operation 3): Replace Expansion Valve
87701950 = See Elsa for the latest time units
Labor Operation 3): Replace Rear Expansion Valve 88701900 = See Elsa for the latest time units
All Vehicles
Outside Material: R1234yf Flush Kit filter
0268056100
8.50 total per A/C System Flush which
accompanies a repair (this amount equals 1/5 of the
cost of the A/C flush machine filter)
Diagnostic Time 4)
GFF Time expenditure
01500000 = 00 TU max.
Road Test
01210002 = 00 TU
01210004 = 00 TU
Technical Diagnosis
01320000 = 00 TU max.
NO
NO
NO
Claim Comment: Input “As per Technical Bulletin 2049039” in comment section of Warranty Claim.
1)
Vehicle may be outside any Warranty in which case this Technical Bulletin is informational only.
2)
Code per warranty vendor code policy.
Page 16 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
3)
Labor Time Units (TUs) are subject to change with ELSA updates.
4)
Documentation required per Warranty Policies and Procedures Manual.
Transaction
No:
2049039/15
Release date:
12/13/2021
Required Parts and Tools
Part Description
Part No:
Quantity
Receiver-Drier
Vehicle Specific
1
Expansion Valve
Vehicle Specific
1
Rear Expansion Valve (Atlas only)
3QF820712A
1
Self-locking bolt
WHT000729A
3
Rivet (if unable to be re-used)
N 0385494
1
Clamping Washer (Atlas only)
N 90335004 with WHT003386
1
Tool Description
Tool No:
Air Conditioning Service System
MAHLE R1234yf A/C Service Unit
VAS581005
Or
Robinair R1234yf - ROB1234YFX
R1234yf Flush Kit
RTI360831840
Page 17 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Air Conditioning System Flushing Device Filter
Transaction
No:
2049039/15
Release date:
12/13/2021
R1234yf Air Conditioning Unit - Filter - External
Flush
Item: 0268056100
Adapter set for refrigerant circuits
VAS 6338/1
Refrigerant circuit adapter for MAHLE A/C Service
Unit and R1234yf Flush Kit
VAS6338/48
Refrigerant circuit adapter for expansion valve
bypass
VAS6338/38
Page 18 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Refrigerant circuit adapter for expansion valve
bypass
VAS 6338/18
Adapter bypass for A/C compressor line
VAS 6338/3
Adapter bypass for A/C compressor line
VAS 6338/12
Additional adapter bypass for Atlas rear A/C unit
high side rear line.
VAS 6338/60
Additional adapter for Atlas rear A/C line block off.
VAS6338/63
Page 19 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
87-18-08 - Air Conditioning, Cleaning of the R1234yf Refrigerant
Circuit (U.S. Only)
Transaction
No:
2049039/15
Release date:
12/13/2021
Additional adapter bypass for Atlas rear A/C unit
low side rear line.
VAS 6338/3
Additional adapter for Atlas rear A.C line block off.
VAS6338/5
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.
Page 20 of 20
© 2021 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.