TM 1-1520-238-T-7
Change 3
11–133
11–19. COLLECTIVE FLIGHT CONTROLS – RIGGING OPERATIONAL CHECK (cont)
11–19
Task
Result
k. Remove rig pins and warning flags installed
in steps a through c. Lower collective stick
down until it contacts stop. Verify that center
point of alignment tool is between MAX and
MIN marks on rigging fixture collective
DOWN pointer (fig. 11–67).
If center point of alignment tool lies outside the MAX
and MIN marks on the collective DOWN pointer, rig
collective stick stops (TM 1-1520-238-23).
If collective stick stops are rigged correctly, replace
collective servocylinder (TM 1-1520-238-23).
COLLECTIVE DOWN POINTER
ALIGNMENT TOOL
CENTER POINT
MAX MARK
MIN MARK
LATERAL
BELLCRANK
LONGITUDINAL BELLCRANK
FORWARD BOLTHEAD
ALIGNMENT
TOOL
MAST BASE
MAIN ROTOR
RIGGING PLATE
M70-141
LONGITUDINAL
BELLCRANK
COLLECTIVE DOWN
POINTER
Figure 11–67.
Collective Down Limit Check
l. Move pilot collective stick up until it contacts
stop. Verify that center point of alignment
tool is between MAX and MIN marks on
rigging fixture collective UP pointer
(fig. 11–68).
If center point of alignment tool lies outside the MAX
and MIN marks on rigging fixture longitudinal AFT
pointer, perform rigging of longitudinal cyclic stick
stops (TM 1-1520-238-23).
If cyclic stick stops are rigged correctly, replace
longitudinal servocylinder (TM 1-1520-238-23).
