Friday 11 May 2018

Cooling System - Coolant Pump Replacement Criteria Service 1 102/12 ENU 1950

Cooling System - Coolant Pump Replacement Criteria Service
1
102/12  ENU  1950
Dec 20, 2012
The present document was valid at the time of print. A later version may be available online
Unnecessary Replacement of Coolant Pumps (102/12)
Model year:

as of 2011

Vehicle Type:
Cayenne (92A)/Cayenne S (92A)/Cayenne Turbo (92A)/Cayenne Turbo S (92A)/Cayenne GTS (92A)  Panamera/Panamera S/Panamera Turbo/Panamera Turbo S/Panamera GTS
2013 Porsche Cayenne GTS (92A) V8-4.8L       Copyright ? 2013, ALLDATA     10.52SS        Page 6
  All Boxster models (987) 
All 911 models (997)  Revision:
This bulletin replaces bulletin Group 1, # 7/07, dated February 27, 2007.

Concerns:
Coolant pump    Information:
Test results for coolant pumps supplied with damage category "leaking".  Most of the coolant pumps returned to Porsche under warranty with the damage category "leaking (e.g. SA-5014)" were indeed found to have traces of coolant residue, but a subsequent function test has shown that almost all the coolant pumps that were diagnosed as leaking were actually fully functional and were not leaking.
In this case, we must point out that the presence of slight traces of coolant residue on the coolant pump housing is not an indication that the coolant pump is leaking and needs to be replaced.
Work Procedure:
Before replacing the coolant pump, it is important therefore to use the following criteria to first check whether there are compelling technical grounds for replacing the coolant pump:
1 IF there are slight traces of coolant residue on the coolant pump housing when you examine it during damage diagnosis [and] the traces of coolant residue are dry and there are no apparent drops forming THEN there are no technical grounds for replacing the coolant pump (see example --> Figure 1 ).
2. IF there are significant traces of coolant residue on the coolant pump housing when you examine it during damage diagnosis [and] the traces of coolant residue are moist and drops of coolant have formed on the housing THEN the coolant pump must be replaced.
--> Remember to take photographs of the leak and attach them to the PQIS job, along with all the required documentation to support the coolant pump replacement.
--> 92AAG1, 92AAG7, 92AAH1, 92AAI1, 92AAL1

Model year as of 2011 C02, C36