Porsche Dynamic Chassis Control(R) - Pump Needs To Be Primed

1
22/12
ENU
1001

Mar 9, 2012

The present document was valid at the time of print. A later version may be available online

Vehicles With PDCC (I-no. 031): Replacement and Reconditioned
Engine as of Model Year C/2012 (22/12)





Tools

Model year:

as of 2012

Vehicle Type:

911 Carrera S (991)

Equipment:

- MA1.03 (3.8-liter engine) and

- Porsche Dynamic Chassis Control (PDCC, I-no. 031)

Concerns:

Pump for PDCC

- when replacing the pump or

- when replacing the engine (with a replacement/reconditioned engine).

Information:

A new pump must be primed.

Information

If the pump for PDCC is replaced, either by itself or together with a replacement/reconditioned engine, the new pump must be primed before starting the engine for the first time.

For this purpose, a check valve in the pump (opens at a pressure of approx. 19 psi /1.3 bar) must be opened
briefly

- at a pressure of approx. 29 psi (2.0 bar) via the reservoir and
- with the engine running

--> The pump can then suck in and deliver fluid.

Parts Info:

9A1.359.021.03 --> Pump (unfilled, for PDCC)

Tools:

Cap 9853 (with valve for tire-inflating device \01 supplied as a special tool)

Work Procedure:

Priming the new pump:

WARNING

Danger of injury and material damage when using Pentosin.

^ Risk of skin irritation and damage to skin.

^ Damage to hoses and wiring.

--> Wear protective gloves and goggles.

--> In the event of contact (eyes or skin), wash immediately with water.

--> Collect emerging Pentosin.

--> Use caps to protect the wiring against soiling and damage.

--> Clean hoses and wiring immediately.

1 Check the fluid level in the pumps reservoir.





Add Pentosin up to the MAX marking if necessary ( -item 1- ).

2 Remove cap with dipstick.

3 Fit the special tool cap 9853 ( -item 1-, with valve for tire-inflating device) on the reservoir instead of the cap with dipstick.

Information





Until such a time as the cap 9853 is commercially available as a special tool, the cap will be supplied with the new pump or replacement/reconditioned engine for the time being.





4 The cap 9853 must then be fitted with a commercially available tire-inflating device and a pressure of (reservior cap pressure 29 psi /2 bar + 7.25 psi/0.5 bar) must be set.

( -item 1- )

( -item 2- )

5 With a pressure of 29 psi (2.0 bar) in the reservoir, start the engine and leave it running for 5 seconds at idle speed before stopping it again.

6 Release the pressure on the tire-inflating device and unscrew the cap.

7 Check the fluid level in the pumps reservoir.

Add Pentosin up to the MAX marking if necessary ( -item 1- ).

8 Start the engine and check the fluid level in the reservoir immediately. If there is no change in the fluid level, stop the engine and repeat Steps 3 to 7.

9 Check the fluid level at idle speed:

- Continue to add Pentosin, but only up to the MAX marking ( -item 1- ) until the fluid level in the reservoir remains constant.

If

- the fluid level drops to the bottom of the reservoir,

- several air bubbles rise to the surface or

- a significant amount of foam forms in the reservoir,

--> air is still present in the hydraulic system.
It is quite normal for a few air bubbles to appear in the reservoir immediately after topping up.

10 Fit cap with dipstick.

11 Bleed the PDCC system, see \01 430307 Bleeding Porsche Dynamic Chassis Control (PDCC)

End of remedial action.

References:
--> 430619 Removing and installing pump (PDCC) - section on "Subsequent work"
--> 430307 Bleeding Porsche Dynamic Chassis Control (PDCC)

991120, 991121, 991320, 991321, 991420, 991421

Model year as of 2012
C02, C36





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