Working Instructions For Heat-Shrink Tubing; Securing With Loctite - DG Flugzeugbau DG-1000T Maintenance Manual

Maintenance Manual DG-1000T

4.8 Working instructions for heat-shrink tubing

To insulate various parts of the electrical system heat-shrink tubing is used. For
repair and maintenance the heat-shrink tubing often has to be removed. For
removal use a sharp knife. To insulate again slip a new piece of heat-shrink
tubing over the part which is to be insulated.
Use a hot air gun (min. 200°C, 390°F) to heat the tubing until it shrinks and
gives a tight fit.

4.9 Securing with Loctite

All bolts on the engine except for the propeller mounting bolts (lockwire) which
are not secured with locking nuts have to be secured with Loctite 243 (Loctite
72 b (672) may be used as an alternative).
If a bolt can't be unscrewed you must heat this section with a hot air gun to
reduce the locking force of the Loctite.
Before reinstallation you have to clean the thread of the bolt and the inside
thread from any remains of Loctite. For this procedure use Acetone.
If necessary recut the inside thread. Before you apply the Loctite bolt and inside
thread have to be degreased with spray cleaner Loctite 7063.
Wipe off the bolt and clean the inside thread with compressed air. Repeat two
times for inside threads.
Apply only a small amount of Loctite on the thread. Too much Loctite may
cause damage when you try to loosen the bolt again.
With blind holes the Loctite must be applied to the thread in the hole and not to
the bolt.
All locked and secured bolts have to be marked with red securing paint which
also marks the respective component at that particular point.
Remove the old red securing paint before reinstallation of the bolt.
Caution: Loctite must be used within 2 years of production date. The
production date is printed on the bottom of the bottle. 96A means January 1996,
96B means February 1996 and so on.
Issued: May 2008 TN1000/16 4.18