TM 1-1520-238-T-5
7–86
7–21.
UTILITY HYDRAULIC SYSTEM – MAINTENANCE OPERATIONAL CHECK (cont)
7–21
Task
Result
NOTE
Refer to figure 7–1. for servocylinder location.
o. Have assistant measure and record cylinder
stroke. Use inside calipers. Measurement A
is from bottom of jam nut to top surface of
servocylinder housing (cylinder retracted)
(fig. 7–47).
DISTANCE
MEASURED
BOTTOM OF
JAM NUT
PISTON
TOP SURFACE OF
SERVOCYLINDER
HOUSING
M68-029
Figure 7–47.
Servocylinder (Typical)
p. Slowly pull pilot cyclic stick to full aft position
to extend piston.
q. Have assistant measure and record cylinder
stroke. Use inside calipers. Measurement B
is from bottom of jam nut to top surface of
servocylinder housing (cylinder extended).
r. Subtract measurement A from B. Cylinder
travel is 3.500 to 3.560 inches.
If cylinder does not travel full stroke, go to step ah.
s. Slowly pull pilot collective stick to full up
position to retract collective servocylinder
piston.
t. Have assistant measure and record cylinder
stroke. Use inside calipers. Measurement A
is from bottom of jam nut to top surface of
servocylinder housing (cylinder retracted).
