TB 044 - Rotary Saw Flashcards
The LAFD carries 4 types of ___” rotary saw blades
14
Each rotary saw should be accompanied by a blade board that has an assortment of blades that best fits the needs of the district. All companies shall have at least __ of each blade type available
1
METAL CUTTING ABRASIVE BLADES - The cutting material on abrasive blades consists of grit bonded by an _________ ________.
Organic Binder
METAL CUTTING ABRASIVE BLADES - Blades shall be a minimum of ___” to remain in front line service
12
METAL CUTTING ABRASIVE BLADES - Blades smaller than ___” may be used for training purposes
12
METAL CUTTING ABRASIVE BLADES - Blades below __” shall be sent into the shops for replacement
9
Abrasive blades shall be removed from service if there are signs of __________ product contamination or _______ which could render the blade unsafe
Petroleum
Cracks
METAL CUTTING ABRASIVE BLADES - Blades that are no longer safe for use shall be marked with a F-175 Tag and the word “________” shall be marked on the blade before forwarding to Supply and Maintenance for replacement
UNSAFE
COMBINATION “COMBI” BLADE - All Combi-blades are ___-__________.
BI-DIRECTIONAL
The Combi-blade is not designed to cut _____ metals such as brass or aluminum, however it can cut thin, soft metal found on train siding, aircraft siding, metal clad doors, or aluminum gates.
Soft
COMBINATION “COMBI” BLADE - Any glazing or buildup of material on the diamond segment can be cleaned by cutting into a soft material such as ______, ________ block or ________.
Brick
Cinder
Asphalt
The Combi-blade had a continuous cutting depth of ____”
4¾
Combi-blades shall be forwarded to Supply and Maintenance for replacement when:
● Any one segment is __________, ________ or missing.
● ______ spots along any of the segments occur.
● Matrix bond is equal to the thickness of the blade body; a step or lip no longer exists.
Fractured, Broken
Bald
Concrete diamond blades are designed as a ____________ cutting rotation
Directional
CARBIDE TIP BLADE - If a missing _____ or a visible _______ appears, fill out a F-175 tag and send the blade to Supply and Maintenance for replacement
Tip
Radius
On the K-970, press the air purge diaphragm __ times
6
FLOODING PROCEDURE - 2. Pull starting cord and cycle the saw quickly about __-__ times. As the air to fuel mixture in the combustion chamber lowers it will start
4 to 5
To set the depth of your cuts, you should use the blade guard as a _______ _______ and the lower portion of the carrying handle as a pivot and skid
Depth Guard
The key to proper cutting positions is keeping the weight of the saw close to the body of the __________
Operator
OPTIONS FOR CARRYING ALOFT - ___’ utility strap
12
Rotary Saw:
Gallon (Gas) - 1 to Ounces (2 cycle Oil) ___
2.6
Gallon (Gas) - 2 1/2 to Ounces (2 cycle Oil) ___
6.5
Gallon (Gas) - 5 to Ounces (2 cycle Oil) ___
13
WEEKLY CHECKS 973W -While the saw is running, the member will depress the throttle fully for __-__ seconds to bring up the RPM’s and allow the saw to return to idle before repeating the process __-__ times
1 to 2
2 to 3
WEEKLY CHECKS 973W - The rotary saw should not be allowed to run at full RPM without a load for more than a ___ seconds or engine damage may occur
Few
MONTHLY CHECKS 973M - ____________ air or __________ should not be used to clean a paper filter
Compressed
Solvents
MONTHLY CHECKS 973M - If the spark plug is dirty, clean it with a wire brush and at the same time check that the electrode gap is .____” (0.5 mm).
.020”
CLEANING - Water with mild ___________ may be used to clean the exterior of the saw. The saw should never be submerged in water
Detergent
CLEANING - When cleaning the engine parts, particular attention should be paid to cylinder and head fins if soiled with such material as molten tar, clean with _________
Degreaser
Blade coasting The cutting blade continues to rotate up to __ minute after the engine has stopped
1
Sparks - can be thrown up to ___ feet
30
Fuel cap - Do not use a tool to tighten the fuel cap, ______ tighten only.
Hand
FLOODING PROCEDURE - Ensure the Choke is pushed in and the half throttle is engaged. This allows the maximum
amount of air to flow through the carburetor, combustion chamber and out the exhaust
.
