Acom 1500 Replacement Manual page 5

Orient the silicon rubber chimney (together with the anode clip inside) so that:
- the temperature sensor could be threaded through the small hole later;
- the anode clip stripe could be screwed to its original place.
Now thread, by small steps in parallel, the chimney over the tube plate heat sink.
Keep track not to bend the temperature sensor during this operation! Thread the
temperature sensor into its hole into the rubber chimney. Clip the spring contact
to the tube plate and precisely orient the nut holes to the UHF-suppressor stripe
holes. Align carefully the rubber chimney, so that its bottom edge firmly touches
the tube deck at the base - otherwise a part of airflow would be exhausted
uselessly and the tube might over-heat!
At last, install the UHF suppressor stripe using two original screws and lock
washers (should have been preserved at previous steps). Tighten the screws
properly.
e) Ensure that after the tube replacement all the amplifier wiring is restored to
its original condition.
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