Porsche 928 Workshop Manual page 775

cl-28
Automatic Transmission / Controls. Case
37
a
DISASSEMRLING AND ASSEMBLING TRANSMlSSION
Disassembling 7. Remove snap ring for cover of brake band " 2
piston and take off cover.
Absolute cleanliness is very importanr when working
on an open transmission. Perfect rransmission funcrion 8. lnsrall Special Tool 9305 and mess out oisrnn
requires that rhere be no dirt on transmission parts.
command valves 01 in oil circuirs. Conrequenuly
disassembled parrs must be washed thoroughly. oil
bores flusbed and dried.
Never use gasoline to wash rubber seals. which
would be damaged. Only we alcohol for cleaning.
Also make sure that wool rags are nor used on parts
because even minure confaminarion (e.g. linl)
could lead 10 disturbances.
1. Detach final drive and remove hearmg assembl)
wirb drive pinion (see page 30 - 22).
2. Remove final drive housing. cenrrifugal gover-
nor and inodular~on pressure valve Ihousing
(see page 37 - 21).
II is cssenrial 10 first rake off the vacuum bon for
modularion pressure prior to removing the final
drive housing.
3. Pull parking lock gear off of ourpur shafr
4. Remove front converter housing and rorque con-
verter (see page 32 - 1).
5. Remove valve body (see page 38 - 21)
6. Remove solenoid valve.
carefully.
(1. Attach Special Tool !I304 for cover of Ibrake hand
B 1 pisron. Preload piston and remove wap ring
1
I
':~. Cc
- r: r-3 ,,
-.
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10. Release and unscrew sperial rool.
11. Remove cover. piston and springs 01 Ibrake hand
B 1.
Printed in Germany 111. lOI! Disassembling and Asselnbling Transmission
31 - 39