TB 67 - Holmatro Rescue Tool Flashcards
The what is a hydraulically powered device used primarily for vehicle extrication and heavy rescue applications?
Holmatro rescue tool
Both power units are powered by what cycle, air cooled Honda engines?
4 cycle
The power units use what type of displacement pump to draw and pressurize hydraulic fluid from the reservoir and direct fluid through the hose and through tool?
Positive displacement
Both power units utilize a 2 stage pump design capable of producing how much psi?
10,500 psi
Initial extrication operations will only require use of the first stage pump which is near how much psi?
3,000 psi
When an operation requires stronger tool forces, the what will “kick in” which can increase the hydraulic pressure to 10,500 psi?
Second stage
The “change over” from the first stage to the second stage can be recognized by a momentary what of movement of the tool followed by a continued movement?
“Stalling”
Members using the tools need to keep the trigger handle in what position during “change over” to utilize the second stage pump?
Desired position
The fluid used in both power units is a what hydraulic fluid that is pale or yellow in color and is non-corrosive?
22-weight mineral based hydraulic fluid
The hydraulic flood is the what of the system?
“Life blood”
How much does the PPU 15 (single power unit) weight?
35 pounds
How much usable hydraulic fluid (cc)does the PPU 15 have?
2000 cc
What is the rpm set at for the PPU 15?
4500 rpm
How much horsepower does the PPU 15 have?
2.5 horsepower
Is the PPU 15 a single tool operation or multi tool?
Single tool
How much does the DPU 30 (dual power unit) weight?
58 pounds
How much horsepower does the DPU 30 have?
3 horsepower
What is the rpm setting for the DPU 30?
3600 rpm
How much usable hydraulic fluid (cc) does the DPU 30 have?
3000 cc
What model spreaders are currently used on the truck companies?
3260 UL
The spreader is operated by use of what kind of handle?
Trigger handle
The trigger handle on the spreader is of what design which when rotated clockwise, causes it to open?
“Dead man”
A rotation of the trigger handle counter clockwise on the spreader will cause the tool to what?
Close
A built in what will keep the tool in its current position when the trigger handle is released while under load in other direction?
Check valve
The 2 shackles provided for the spreaders are equipped with what used to connect the C-8 rated chains?
“Grab hooks”
What 2 tips are included with the spreader for panel cutting?
Cutter tips
When using the cutter tip to cut panels, how many cutter tips are placed on the spreader?
1 cutter tip, 1 spreader tip remains
Used for the cutter tips include what applications?
Panel vans
Aircraft skins
Semi trailers
Large panels of sheet metal
Because of the powerful force employed while cutting with the holmatro cutters, extreme care should be used to ensure that the tips of the cutters do not cross on what?
The opposite side of the blades
Care should also be used on the cutters to ensure that material being cut does not cause the cutter to what?
Twist and allow blades to separate while cutting
What 3 models of cutters are there?
3020 UL 3035 NCT (new car technology) 4050 NCT (new car technology)
What is the cutting force for the 3020 UL cutters?
63,400 pounds
How far can the 3020 UL cutters open?
5 1/4”
How much do the 3020 UL weigh?
27 1/2 pounds
What is the cutting force of the 3035 NCT cutters?
57,320 pounds
How far do the 3035 NCT cutters open?
5 5/8”
How much do the 3035 NCT weigh?
33 1/2 pounds
What is the cutting force for the 4050 NCT cutters?
208,000 pounds
How far do the 4050 NCT cutters open?
7 1/8”
How much do the 4050 NCT cutters weigh?
37 1/2 pounds
For the telescopic rams, rotating the trigger handle in which direction will cause them to extend or retract?
Extend: clockwise
Retract: counterclockwise
Both rams are of the what design whereas there is a plunger within a plunger that extends from the main body?
2 stage design
The ram extends from where to the handle?
Nearest part of the handle
What 2 model telescopic rams are carried on truck companies?
3340 (small ram)
3350 (big ram)
What size is the 3340 ram and how long is it fully extended?
12” normal
23” fully extended
How much pounds of force for the 1st and 2nd stages for the 3340 and 3350 ram?
1st stage: 49,210
2nd stage: 18,210
How much does the 3340 ram weigh?
24 pounds
What is the size of the 3350 ram and how long is it fully extended?
Normal: 21”
Fully extended: 50 1/4”
How much does the 3350 ram weigh?
37 pounds
Each truck company carries a what that can be used in conjunction with the telescopic rams?
HRS22 ram support
What are 2 purposes for the HRS 22 ram support?
To provide purchase point near object to be pushed (dash roll)
Spread the force load against an object, giving the ram a wider and more stable purchase point
The HRS22 ram support is designed to use which braces?
Round braces, hex braces are equally as strong
The hoses supplied with the holmatro tool are orange and blue and are how long?
32 feet
The hoses have a high pressure and low pressure hose within the hose itself, which one is the supply and which one is the return?
The inner (high pressure) is the supply and the outer (low pressure) is the return
Both the inner and outer hoses for the holmatro hose itself are constructed of what?
Polyurethaning and reinforced with Kevlar-like aramid fibers which make them resistant to kinking
What is the working pressure of the hose?
10,500 psi
What is the burst pressure rating for the hose (4 times)?
42,000 psi
All holmatro hydraulic hoses and rescue tools come standard with what kind of couplers?
Flat faced, no-drip, auto locking quick couplers
The couplers have a built in automatic return valve that eliminates the need for a dump valve on the pump and allows the what of tools?
“Hot swapping”
Each power unit has a pressure relief device, it is used by placing what end of the hose coupler in the open end of the device?
Male end of the hose coupler
To avoid the inadvertent build up of pressure, for the spreader close until tips touch and open it how wide?
1/4”
To avoid the inadvertent build up of pressure, for the cutters open or close blades until what?
Tips cross
If the cutters will not fit in the compartment open the cutters completely then do what?
Close slightly
To avoid the inadvertent build up of pressure, for the rams fully retract piston, then open the ram how much?
1/4”
The secunet is carried on which apparatus?
Truck and heavy rescue
The secunet should be done without placing what in front of a non deployed air bag?
Steering wheel
The secunet can be used over and over, but must be taken out of service and replaced through shops if what?
Air bag deploys
The manufacturer only guarantees how many time deployments of the secunet?
1 time
What are the 6 daily checks for the power unit?
Fuel and hydraulic level On position Choke proper position Fuel valve on Visual inspect for readiness
What are the weekly 5 checks for the power units?
Fluids checked (engine oil too) Visually inspect fasteners Start and run engine Operate tool with hose connected Note change in RPM
How long should you run the power unit during the weekly check?
At least 15 minutes
When operating the tool during the weekly check, hold the trigger down for how long and note the change in RPM before releasing trigger?
Few seconds
What are the 4 monthly checks for the power units?
Air filter
Hose couplings proper operation
Dust caps, tethers, pull cord frays
Condition of fuel
What are the daily checks for the ram?
Readiness
Dust cap in place
What are the 3 weekly checks for the rams?
Visual inspection
Components of ram performed
Operate trigger handle
What are the 3 monthly checks for the rams?
Extend rams fully
Inspect for gouges/sharp points that could damage seals
Inspect small chrome tube
What are the daily 3 checks of the hoses?
Visual inspection
Dust caps in place
Check for leaks
What are the 2 weekly checks for the hoses?
Coupler for proper operation
Noticeable “click” upon connect
If couplers on hose do not make connection, apply what to the area behind the coupler and also the face?
WD40 or an equally suitable lubricant
If after several attempts to make a complete coupling and coupler will not fully close, it may need to be what?
Replaced
What are the most abused component of the holmatro rescue tool system?
The hoses
During the tool operation check, hold the trigger handle to the full open and close position for about how many seconds and check for leaks along the hose and the couplers?
5-10 seconds
What should you clean the hoses with?
Mild soap and warm water solution
If hoses become contaminated with grease, tar, battery acid or any other harmful product, use a cloth with what to remove product before cleaning with soap and water?
WD40
When storing the hoses, they should not be shoved into the handle of the spreader or cutter but stored how?
In a coiled roll
On a monthly basis, the ramp support, cutting tips, chain shackles and chains shall be inspected for what 3 things?
Cracks
Wears
Damage
What are the monthly checks for the secunet?
Contamination or tears
Current LAFD policy is to replace fuel every 30 days with fresh fuel, also fuel stabilizer such as what should be used to keep gas fresh?
Sta-bil(r) or seafoam(r)
If the gasoline is what color in the power units you should replace with fresh fuel?
Yellow
All power units are equipped with strainers sufficient enough to strain the gasoline for refilling, if no strainer in tank use what to strain gasoline when refilling?
Paint strainer
Running the power units in what position for extended periods of time can cause damage to the engine components?
Half choke position
What are the proper PPEs that should always be used when operating the holmatro tools?
Helmet
Goggle
Gloves
Protective clothing
When operating the holmatro tools in a flammable or combustible environment, what should be in place and ready to protect personnel in the work area?
Loaded 1 1/2” line and dry chem
The hinge bolt nut on the cutters needs to be checked for tightness, if loose tighten the bolt to how many foot pounds of torque?
75 foot pounds
If the cutters have what they should be dressed with a file so that blades pass each other without any deflection?
“Mushrooming”
