Mod 12-13 Inspection and Torque Flashcards
When is a standard torque use?
when a specified torque is not identified in the applicable MTC publication
what is specified torque?
applicable MTC publication for a particular fastener
what is a TARE torque?
torque required to overcome resistance of the self-locking nuts against mating bolt, screws, or studs threads.
what is assembly torque?
total torque value applied to the fastener
same fasteners will have the same assembly torque ? why?
no, variations in wear, stress and finish will impact the tare value of the same type and size fastener
what is a critical fastener
is one of which if remove or lost would jeopardize safety of the operation
secondary locking devices
pin cutters
lock wire
pound nut
only part acceptable to apply torque in a wrench
by the grip
can you use a torque wrench to loose a fastener ?
NO
when using a secondary locking mechanism and the torque of the bolt is 110-150 in lbs. What it would be the initial setting torque wrench
- min allowance if doesn’t align go to max torque allowance or you ca add a washer
can self locking nuts be reused?
yes, but have to meet the torque required otherwise is useless
how many threads min must be sticking out of past a nut when is properly installed?
2 threads
why must synthetic long line be replaced after 4 years ?
because has lost 50% of the initial strength
how many strands can be completely cut before the long line must retired
none
how must the long line be storage?
an a transport bag in a cool dry clean environment out of the direct sun and make sure is no compressed
