Subject: Bearing bush for bearing VIII with oil relief groove Models: 911 T/911 E/911 S 1970
Bulletin Number: 70 – 10
Vehicle type: 91 T, 911 E, 911 S
Model year: 1970
Effective date: June 26, 1970
Engine type Version from engine number
911/01 911 E-C manual transmission 620 2413
911/02 911 S-C manual transmission 630 2394
911/04 911 E-C with Sportomatic 620 8429
911/07 911 T-C manual transmission 610 9573
911/08 911 T-C Sportomatic 610 8365
Spare part stocks overhaul this grove must be machined into the bearing bush on all the following engines. The groove can be cut with a fine-toothed saw blade. When installing, do not use sealing compound on bearing bush VIII.
Spare part stocks of bearing bush VIII must also be modified with the oil relief grove and used before re-ordering.
Part number of bearing bush without groove 901.101.138.02
Part number of bearing bush with groove 901.101.138.03
Engine number ranges which do not include the bearing bushes with oil reliver grove are shown below:
| Engine type | Engine number |
| From to | |
| 911/01 | 620 0001 620 2412 |
| 911/02 | 630 0001 630 2393 |
| 911/03 | 610 0001 610 2999& |
| 610 3501 610 4088 | |
| 911/04 | 620 8001 620 8428 |
| 911/06 | 610 3001 610 3225 |
| 911/07 | 610 5001 610 7999& |
| 610 8501 610 9572 | |
| 911/08 | 610 8001 610 8364 |
Dimensions and position of the oil relief groove are shown on the attached drawing.
Key to drawing: a) hole for straight peg
b) oil relief groove
