TM5-6675-326-14
Table 4-1. Operator Preventive Maintenance Checks and Services - Continued
Item
No.
5
6
7
I n t e r v a l
B
B Before Operation
ITEM TO BE INSPECTED
Equipment Is
Not Ready/Available
PROCEDURE
I f :
STRETCH CONTROL LEVER,
STRETCH DIRECTION DIAL,
IMAGE ROTATION DIAL, ZOOM
CONTROL KNOB. Check
rotation and freedom of
movement for each control.
NOTE
Do not remove eyepieces.
EYEPIECES. Check that each
eyepiece moves freely in and
out of its eyepiece tube.
INTERPUPILLARY ADJUSTMENT
SCALE. Check that eyepieces
move toward or away from
each other.
Controls are jammed
or broken.
4-10