Porsche 928 Workshop Manual page 779

928
Auromaric Transmission / Controls. Case
37
15. Install piston of brake band B 2 by guiding
brake band piston into transmission case with
Special Tool 9305 and making sure that the
pressure pin has proper fit in bore of brake
band B 2.
16. Use a new O-ring on cover of B 2 brake Land
piston and insrall with a spring.
Note
Apply a light coat of ATF on C-ring.
11. Install snap ring for cover.
18. install piston and cover of brake band 8 I
with Special Tool 9304.
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19. Measure disrance of dead travel for pisrons of
brake bands B 1 and B 2. This is done by moving
piston of brake band B 2 into lifr position wirh
air pressure supplied through lift pressure bore
and checking distance "b". Then move rhe
brake band piston inro shill posirion with air
pressure supplied rhrough the shifr pressure bore
and recheck distance "b". The difference of
both distances is dead travel "L".
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1 - Lifr pressure - bore B 2
2 - Shift pressure - bore B 2
Check distance "a*' while springs hold rhe piston
of brake band B 1 in lift position. Then move
this piston IO shift position with air pressure
supplied through shift pressure bore B 1 and re-
check distance "a". The difference will be
dead travel "L".
pn
3 - Shifr pressure - bore B 1
0
Printed in Germany- 111, 1979
Disassembling and Assembling Transmission
37 - 43