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2420 FIELD HOSPITAL SURGICAL LIGHT
5. Trouble Analysis
TROUBLE ANALYSIS GUIDE - MECHANICAL
TROUBLE
PROBABLE CAUSE
REMEDY
Lighthead
drifts
in
angular
plane.
Yoke
pivot
out
of adjust-
ment.
Adjust
tension
on
yoke
pivot
spring
washer.
Adjustment A.
Lighthead
drifts
in
rotational
plane.
Yoke mounting pivot out of
adjustment.
Adjust tension on yoke mounting
spring washer.
Adjustment
B.
Vertical drift in sup-
port
arm.
Support arm pivot out of
adjustment.
Adjust tension on support arm washers.
Adjustment
C.
Horizontal
drift in
support
arm.
Support arm friction plug
loose on bearing post.
Adjust
friction
on
support
arm
bearing
post.
Adjustment
D.
Horizontal drift in ex-
Suspension tube not
Adjust mounting plate leveling nuts.
tension
arm.
plumb.
Adjustment
E1.
Extension arm friction plug | Adjust
friction
on
extension
arm
bearing
post.
loose on bearing post.
Adjustment E2.
12
DATE: 8/87
30840
REPLACES: 2/85
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