Porsche 928 Workshop Manual page 787

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928
Automatic Transmission / Controls. Case
37
6. Install pressure units B 1 and B 2 in ccnrecI
position and secure with lock.
Note
A rubber insert is installed as from May 7. 1979 m
eliminate hydraulic noise in the lubricating circuit.
This rubber insert can be service insralled in rrans-
mission without one.
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1 - Pressure unit B 1
2 - Pressure
unir 6 2
A - Rubber inserr
Pressure unirs B 1 and B 2 have different designs
and therefore musr not be mixed up. For idenri-
ficarion B 1 pressure unit has a groove running all
around.
Printed in Germany - 111. 1979
Disassembling and Assembling Transmission Case
37 - 51