Porsche 928 Workshop Manual page 146

928 Automatic Transmission/Gears, Valve Body
38
2. Lubricate both pump gears with ATF and
install in pump body, whereby the large
gear must be installed that the chamfer
(arrow) faces bearing sleeve.
3. Screw Special Tools 9321 in pump body.
Place transfer plate in correct position and
install pump in front cover. Bearing sleeve
must not be damaged by the stator shaft
during this step. Tighten mounting bolts to
20 Nm/14 ftlb.
4. Install seals on piston that sealing lips face
down (direction of arrow).
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5. Apply Special Tool 9319 on front cover
and coat sliding surfaces with ATF.
6. Coat seals on piston with ATF and install
piston that journal (on piston) and bore
in front cover are aligned.
7. Press in piston carefully and without
canting, driving in with a suitable pin
applied on outer seal (arrow) if necessary.
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Printed in Germany VIII, 1984
Removing and Installing Primary Pump
38-153