122-J5M3M-11

Advanced Technical Information
AC Compressor Seizes Due to Oil Migration
Vehicle Type: 		
911 (991-II), 718 Boxster/Cayman (982)
Model Year: 		
2017 - Present
991, 982
1703
8734
8
Binder - Advanced Technical Information
Replaces ATI Grp 8 #1703 dated July 27, 2017.
Concern: 		Vehicle is stored for a long period of time in the sun and heat, typically 30 days or more. Several cases
of compressors seizing have occurred at PDI. Please use the procedure below during the PDI as a
precaution.
Information: 		
 his issue has been remedied in production and this bulletin will expire on December 14,
T
2017.
			The oil in the AC compressor can migrate out of the compressor. This is due to temperature variations
between components in the AC system.
				
			
When the AC is turned on, there is very little, if any, oil in the compressor. It seizes up as a result.
			
			PAG is aware of the issue. A long-term solution is being developed. The following procedure can help
prevent this situation in the interim.
Procedure: 		It is possible to perform a run-in procedure to get oil back into the compressor without it seizing. The
engine and air conditioning system should be operated using the following process:
			
			
			
			
			
			
			
			
1. Ensure the air conditioning system is switched off.
2. Start the engine and run for 1 minute at idle.
3. Raise the engine speed to 2000 RPM for 5 minutes.
4. Return the engine speed to idle.
5. Set the air conditioning temperature to 72° F and the fan blower speed to 75% of the maximum
blower speed.
6. Switch on the air conditioning system.
7. Ensure all the instrument panel air ducts are open.
8. Run the air conditioning system for a minimum of 5 continuous minutes with the engine at idle.
Labor Operations:
87341999 - Perform run in procedure.
			Time Units: 20
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Porsche Cars North America, Inc. believes the specifications to be correct at the time of printing. However, specifications, standard equipment and options are subject to change without notice. Some
options may be unavailable when a car is built. Some vehicles may be shown with non-U.S. equipment. Please ask your authorized Porsche dealer for advice concerning the current availability of options
and verify the optional equipment that you ordered. Porsche recommends seat belt usage and observance of traffic laws at all times.
©2017 Porsche Cars North America, Inc.
AfterSales
October 5, 2017
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