TM-5-5420-279-10
Table A. 1 Inspection and action requirements (continued)
Inspection
Location
Time Interval
Action
Method
When CrackFirst gauge
Visual
Check for cracks at weld
Zone C - Ends of
has cracked across
toes in vertical direction.
welds attaching the
central band between
Remove from service if any
end diaphragm to the
12 mm holes until gauge
cracks longer than 25 mm
side skins.
has cracked completely.
are found.
When CrackFirst gauge
Visual
Check for any evidence of
Zone C - Connecting
has cracked across
cracks from bore of jaw pin
jaws at ends close to
central band between
holes.
holes for pins
12 mm holes until gauge
Remove from service and
has cracked completely.
replace component if any
cracks are found
continued
A-7