ABB HT566195 Operation Manual page 116

NOTICE
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Disassembly and assembly
Installing cartridge group
Align the compressor casing internal part (76000) with the notch (see
the arrow) so that the notch is positioned at the rib of the compressor
casing external part (74000) (see the arrow).
Fully insert the compressor casing internal part (76000).

Fit the studs (74026/74029).

Operation Manual / TPL76-C
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8.7 Page 114