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Luker
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What are two documents that can be used to reference hardware?
- Manuf. Parts Manual
- STC installation paperwork
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Thread diameter up to and including .216 is sized how?
.250 and up is sized how?
- .216-uses screw sizes, 0-12
- .250-fractional sizes
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Name the 5 classes of fits with regaurds to threads?
- #1-loose-wing nut
- #2-free-screw
- #3-medium-bolts
- #4-close-wrench is needed
- # 5-tight-
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True/False-Dirk's beard makes him look like a terrorist?
True
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What does NF stand for?
National Fine
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What type of applications are NF threads used on?
- high torque requirements
- cycle loading
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What type of bolts are AN bolts?
NF/NC
NF
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What does NC stand for?
National Course
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What type of applications are NC bolts used on?
- Lower torque req.
- lower cycle loads
- threading into softer materail
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AN Specs has two important criteria that MUST be met, what are they?
- Traceability
- Cert. through invoicing
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How are bolt diameters sized?
in 1/16th increments, diameter is always 0.0-.0005" undersize
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How are bolt lenghts sized?
in 1/8 increments, lenght is always slightly more than nominal
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how long is a bolt that has a designation of-
10
11
17
25
- -1 and 0/8ths
- -1 and 1/8ths
- -1 and 7/8ths
- - 2 and 5/8ths
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What are the 3 classifications for nuts?
- Alum
- corrosion resistant
- brass
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How can you tell if a nylon lock nut is fucked?
- don't use if the nut has no drag,
- must have 3 threads to be in safety
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What fasteners must incorperate two seperate types of locking devices?
any bolt, screw, nut, pin or other fasteners whose loss could jeopardize the safe operation of the a/c
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What do the following designations mean?
O
C
B
D/PD
L
- O-Cadmium
- C-Corrosion
- B-Brass
- D or PD-Alum
- L-Lightweight
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do self tapping screws need a pilot hole? and how can they be identified?
No, self tapping. identified by a X on the head
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A AN73-A4 bolt is what type of bolt?
Prop Bolt, -A4 means its a course thread
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What is the only application that clevis bolts are used?
Only in Shear
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How does UNF threads differ from NPT
- UNF-Non-tapered, seals on angle mating surfaces
- NPT-Tapered, seals on threads
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How are AN fittings sized?
corresponds to metal tube O.D.
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What are Bulkhead fittings used for?
- goes through bulkhead or structure.
- Boss o-ring installations into castings, pumps, actuators
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In a hydraulic system, what is defined as low, med and high pressure?
- below 1,000 psi
- 1,000-1,500 psi
- up to 3,000psi
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Name 3 types of hose clamps?
- worm screw
- snapper
- speed clamp
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Name 4 types inner liners used on flexible hoses?
- Neoprene
- Buna-N
- Butyl-phosphate ester
- Teflon
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Where would you expect to find hoses in the aircraft?
Anywhere movement is expected
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What is the purpose of lay lines on hoses?
shows how straight the hose is and indicates bubbles
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What runs over hoses in engine bays?
fire Sleeve
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How are engine bolts applied?
Duh, 'with the Prop running' you fuckin idoit!
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What is an Adel Clamp?
Support clamp
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Name the 5 general rules with hoses
- slack in the hose
- lay hose straight (can cause fittings to loosen off?)
- Enough relief to bend during movement
- Neatness, proper runs
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What is the function of the o-ring?
seals
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what happens if o-ring is exposed to more than 1,500psi?
causes o-ring to push out of the installation
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What are the 3 types of cables?
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how are control cables specified?
- sized by O.D.
- Galivinazied or stainless
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how do you check swaged cable terminals?
with a go-nogo gauge
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What is the groove for on the turnbuckle?
identifies the left hand thread
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which turnbuckles have slots ?
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whats a carplug
seals fittings apon disassembly
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what application are gromments used in?
high heat
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Define CAT, CEET, SCAT and SCEET ducting?
- CAT-black with single ply neoprene, impregnated with fibreglass
- SCAT-Silicone rubber impregnated, higher heat, orange
- CEET-similar to CAT, 2 plies with wire in between plies
- SCEET- similar to SCAT, 2 plies with wire in between plies
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