TEST, SINGLE-STEP CAP
Part number 443 121 321
- Generate excess pressure.
- The pressure relief valve opens and the pressure remains constant at an excess pressure of 1.3 bar. If the pressure decreases, replace the cap. The two-step cap is the preferred version.
TEST, TWO-STEP CAP
Part number 996 106 447 00
- Generate excess pressure (step 1)
- The pressure relief valve opens at an excess pressure of approx. 1.4 bar; the pressure then slowly decreases again, and the valve closes at 1.0 bar. If the pressure decreases further, replace the cap.
- If the test pressure of step 1 is maintained, test step 2 . Apply excess pressure to the pressure relief valve of step one by pumping rapidly. The pressure relief valve of step 2 must open at an excess pressure of approx 1.8 bar. If the valve does not open, replace the cap.
Scheme 160
Scheme 161
| Item | Designation | Special tool | Remarks |
|---|---|---|---|
| A (1) | Flexible screwdriver wrench size 7 | Commercially available | For undoing or tightening screw hose clamps |
| B (1) | Frost protection testing device | Commercially available | For checking the frost protection content in the coolant circuit. The structural shape can deviate from that in shown in (1) . |
| C (1) | Spring-band clamp pliers | Commercially available | For opening and closing spring-band clamps |
| Frostox R Spezial | Part Nos.: 000.043.204.39 | Agent for cleaning the coolant circuit. Available from the Porsche Parts Service | |
| (1) For explanation see scheme 902 | |||
| (1) | For explanation see scheme 902 |
SPECIAL TOOLS (1 OF 2)
Scheme 162
| Item | Designation | Special tool | Remarks |
|---|---|---|---|
| 1 (1) | Canister | Contained in scope of delivery of 9696 | 30 L canister with lifting tube. |
| 2 (1) | Hose extension FZ 100 K | Contained in scope of delivery of 9696. | Is connected between adapter K22 and pressure gauge part. |
| 3 (1) | Adapter K 22 | Contained in scope of delivery of 9696. | Is mounted onto the coolant expansion tank. |
| 4 (1) | Venturi nozzle (KVB 01) | Contained in scope of delivery of 9696. | For producing vacuum. |
| 5 (1) | Adapter K 65 | Contained in scope of delivery of 9696. | |
| 6 (1) | Pressure gauge (KVB 01) | Contained in scope of delivery of 9696. | Displays the existing vacuum. |
| (1) For explanation see scheme 903 | |||
| (1) | For explanation see scheme 903 |
SPECIAL TOOLS (2 OF 2)