TM 1-1520-238-T-7
11–132
Change 4
11–19.
COLLECTIVE FLIGHT CONTROLS – RIGGING OPERATIONAL CHECK (cont)
11–19
Task
Result
i. Remove rig pin installed in step d.
j. With assistant holding pilot cyclic stick
against left stop, install alignment tool in
head of forward bolt on longitudinal
bellcrank. Place rigging fixture on rigging
plate next to alignment tool. Verify that
BASIC DIM pointer on rigging fixture aligns
with center point on alignment tool
(fig. 11–66).
If BASIC DIM pointer on rigging fixture does not align
with center point of alignment tool, rig upper collective
flight controls (TM 1-1520-238-23).
BASIC DIM POINTER
ALIGNMENT TOOL
CENTER POINT
CENTER MARK
LONGITUDINAL
BELLCRANK
MAIN ROTOR
RIGGING PLATE
MAST BASE
MAIN ROTOR
RIGGING
FIXTURE
BASIC DIM POINTER
ALIGNMENT TOOL
LONGITUDINAL BELLCRANK
FORWARD BOLTHEAD
M70-140A
LATERAL BELLCRANK
Figure 11–66.
Collective Mid-Travel Check
