Oil Cooler O-Rings/Pressure Testing Cooler - Revised
88porsche02Subject: New Oil Cooler O-Rings/
Pressure Testing Cooler
Model
924S, 944 944S, 944 Turbo
Group
1
Part Identifier
1740
Number
8813
June 10, 1988
This bulletin replaces Technical Bulletin, Group 1, Number 8802, dated March 11, 1988. This bulletin contains the latest part number for the oil cooler O-ring seals and instructions for testing the oil cooler for leaks.
FIGURE 1:
New Oil Cooler O-Rings
The sealing O-rings (A, figure 1) located on the oil cooler of normally aspirated cars and on the connecting pipe of the oil thermostat housing of Turbo cars, have been changed. The new version O-ring is now green in color (formerly red). When repairing, use ONLY the new version green O-rings. Part Number 999 707 043 40.
The new version O-rings are installed from the following engine numbers.
46 J 06772 924S, 944 Manual trans.
46 J 61599 924S, 944 Auto trans.
42 J 01420 944S
45 J 01753 944 Turbo
47 J 00899 944 Turbo S
Pressure Testing Oil Cooler (normally aspirated cars only)
To test the oil cooler for leaks proceed as follows:
Obtain the following parts:
1 - Hose clamp - 16-25 mm 1 - Dust cap - 23 mm diameter A water container large enough to completely submerge the oil cooler.
FIGURE 2:
Install the dust cap and hose clamp on one side of the cooler and tighten clamp (arrow 1, figure 2).
Place the cooler into the container of water to the depth indicated by arrow 2 (figure 2).
Apply 0.8 bar (11.6 PSI) air pressure to the oil cooler and check for bubbles which indicate leaking.
Switch the cap and clamp to the other fitting and repeat the test. If a leak is detected, replace the cooler.
Labor Operation: 17 40 01 50
Time Units: 20