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Traction Devices� by HC120915145934

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									    KFD Traction
        Devices
  …to be used when snow,
ice, or other conditions may
  cause a vehicle to skid.
Goals for Learning
• KFD employees will review SOG 2-II-8:
  Apparatus Operations: Traction Devices
• KFD employees will become familiar with
  the various types of traction devices
  available on KFD apparatus
• KFD employees will become familiar with
  the parts of cable tire chains
• KFD employees will understand the proper
  steps for installing tire chains on:
  – Fire Apparatus
  – Ambulance Apparatus
This Power Point has been updated with new
information regarding tire siping and new
apparatus with new technology.
When inclement weather strikes, it is the
responsibility of the on duty crews to
determine if traction devices are
necessary.
                                  Hey John!
                                  It’s slicker
                                than snot out
                                 here – how
                                about we put
                                  on the tire
                                    chains!
 Types of Traction Devices


• Studded or Siped
  Tires
• 4-wheel Drive
• Differential Lock
• Tire Chains
  – Cable Chains
     • With Cam-Fastener
     • Without Cam-Fastener
  – Traditional Chains
Studded Tires

• During the winter of 2008-
  2009 KFD switched from
  studded to siped tires. M64 is
  the only ambulance with
  studded tires.
• Vehicles with siped tires are:
   –   M61
   –   M62
   –   M63
   –   M65

• Staff vehicles, including the
  BC Suburban are not
  equipped with studded tires
4-Wheel Drive
                • The following vehicles
                  are equipped with 4-
                  wheel drive:
                  –   Chief 61
                  –   BC 61
                  –   Training 60
                  –   Training 62
                  –   Utility 60
                  –   All Grass Trucks
                  –   Medic 64
Fire Apparatus Traction Control




                  A62 & E63 are equipped
                     with this feature.
Tire Chains for Fire & EMS
Apparatus
              • The department
                uses three types of
                tire chains.
                – Cable Chains with a
                  cam-fastener
                – Cable Chains without
                  a cam-fastener
                – Traditional Tire
                  Chains
Cable Chains with Cam-Fasteners
• The cable chains that utilize a Cam-Fastener, (as
  seen below), are used on Fire Apparatus ONLY.
• The Cam-Fastener is the only “tightening” device
  used with these chains.
• DO NOT USE BUNGI’S TO TIGHTEN CABLE
  CHAINS! They are intended to have slack in them.


       Cam Fastener




                       Hook
Other Parts & Pieces of Cable Chains

      Adjustment Cable
    a.k.a “Nubbed Cable”
                                           Link


                           Hook End




      Adjustment Hook
                                  Chain Links
       SAFETY MESSAGE
 It is recommended you use leather gloves
while installing cable chains. Fine splinters of
  stranded cable make for seriously painful
slivers. Plus you won’t damage you recently
               manicured fingers.
Installation of Cable Chains




 1. Cable chains are identical. They will fit on
    either tire. However, you must change how
    you start the application depending on which
    side of the vehicle you are working on.
Step One:
                    1.   Lay the chains over the
                         tire in preparation for
                         installation.
                         •   On the drivers side the
                             cam-lock must be to the
                             rear of the tire.
                         •   On the passenger side
   Passenger Side            the cam-lock must be to
                             the front of the tire.
                    2.   Ensure that your chain
                         slack is to the front of the
                         tire.
                         •   Having slack to the rear
                             is OK for installation on
                             the Engines, however
                             with the Aerial you may
                             inadvertently drive onto
                             the slack of the cable
                             chain.
Step Two:
                      1. Make sure that
                         the chain links are
                         evenly spanning
                         the tire.
                      2. You are now
                         ready to move the
                         vehicle forward.
                      3. This is a two
                         person operation.
 * Note the lack of
 cable slack to the
 rear of the tire.
Step Three:
1. It is helpful to    Be sure that the cam fastener
   wedge the first     is positioned to the outside
   chain link under    of the tire.

   the tire before
   moving.
2. Slowly move the
   vehicle forward.
3. Stop the vehicle
   after the second
   chain link has
   cleared the tire.
Step Four:
             1. Connect “Nubbed
                Cable” to Adjustment
                Hook and Cam
                Fasteners.
             2. You must count the
                number of nubs that
                have passed through
                the Adjustment Hook
                and Cam Fastener.
             3. Ideally, the number
                of nubs should be
                equal. However, it is
                permissible to have a
                variance of 1.
Step Five:




 1. Lock the Cam Fastener into place, moving
    the hook into place so that it fastens to the
    cable itself.
 2. It is permissible to secure the hook with a
    wire tie. (Not provided by the manufacture.)
Step Six:
            1. Adjust the cable
               chains to ensure:
              – Cable Chains are
                as tight as
                possible – using
                hand strength
                only.
              – Chain links evenly
                span the tire
                tread.
              – If necessary: pull
                additional nubs
                through hooks /
                fasteners.
Step Seven:
1. Drive the
   apparatus for at
   least ¼ of a mile.
2. At the completion
   of the drive.
   Check the chains
   for:
  •   Tightness
      (Retightening if
      necessary.
  •   Proper spanning
      of the tire.
WARNING: Do no use bungee
  chords to tighten cable
         chains!




     Note: Bungee’s can be used to tighten traditional
  chains, but are not to be used with cable chains as they
        are designed to have slack around the tire.
WARNING:
Do not
exceed 35
mph while
driving with
chains!
The END


   Drive Safe

								
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