EXTERNAL AIR TRANSPORT BY CH-47 HELICOPTER - CONTINUED
MACHINE DISASSEMBLY AND SECTIONALIZATION - CONTINUED
Hitch and steering movement can reduce clearances suddenly and cause personnel injury. Always stop
engine BEFORE working in area of hitch link.
If machine is not on level ground with tractor and scraper aligned, machine may have to be repositioned
to facilitate installation of hitch locking blocks.
Install hitch locking blocks:
Position each locking block between hitch and tractor frame.
Fully tighten two bolts and jamnuts on each locking block.
HITCH LOCKING BLOCK
Install all steering cylinder locking collars:
Disassemble each of four locking collar assemblies, two short (6 5/8 in.) and two long (10 3/4 in.): Remove
two bolts and washers and open each short locking collar and remove hose wrapping. Remove three bolts and
washers and open each long locking collar and remove hose wrapping.
To prevent damage to cylinder rod, ensure rod surface is free of dirt or other debris before locking col-
lars are installed.
Position hose wrappings and one short and one long locking collar around rod end of each steering cylinder.