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TM 9-2320-356-BD
Section VI.
HARDWARE, MECHANICAL LINKAGES, CABLES, AND PULLEYS
3-14.
GENERAL
Various types of hardware and linkages are used throughout tactical vehicles to
transfer the control actions from the crew to the components being controlled.
Damage can occur to the mounting hardware or the rods, cables, and levers in
mechanical linkage systems.
Pins can become lost or linkages can bend or break,
disabling or hampering vehicle operation.
This section will give various
procedures that may be used to repair or restore needed functions.
3-15. FORCING MISMATCHED THREADS
Mismatched bolts can be used to make BDAR repairs if proper bolts are not available.
Care must be taken not to break bolts by forcing them too far. Forced threads will
not hold as much stress as standard threads but will provide a limited operational
c a p a b i l i t y.
3-16. THREAD CLEANUP
Damaged threads can be repaired using a thread file or a triangular file. Turning
a hardened steel nut onto the bolt can also help realine damaged threads.
The
threads must be cleaned to remove dirt or metal particles which might cause further
damage to threaded holes.
Use a wire brush, nail, or scribe to remove stuck metal
p a r t i c l e s.
3-17. MOUNTING HARDWARE USING IMPROPER BOLTS
Brackets and components can be connected or mounted using an iron rod or stud
inserted through the connecting holes.
Swaging or bending each end will keep the
components together.
A stud can be screwed into a threaded hole and a nut used to
hold the component.
If the proper size nut is not available, use a nut larger than
the stud threads and flatten the stud end to hold the nut in place. Linkages also
can be connected by inserting a nut or bolt and flattening the ends to keep it from
dropping out of position.
3-18. GEARSHIFT LEVER BROKEN
General Information:
Binding shift linkage can cause the transmission range selector lever to break,
resulting in the loss of shifting control.
Binding linkages must be repaired to
allow shifting without excess strain on the mechanism.
A temporary shift lever can
be fabricated to provide selection of the transmission gear ranges.
Limitations:
o None
3-12
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