Determine how you are stuck.
· The terrain, e.g. water, mud, sand, rocks, etc.
· The depth.
· The easiest recovery route.
· Useful aids available from the surroundings.
Then determine what contributed to the vehicle getting stuck.
· Obstruction.
· The incorrect line.
· Gear selection and High or Low ratio.
· Momentum.
· Clearance.
· Tyre pressure.
· Steering direction.
·
Then decide on the best method of extricating the vehicle.
· What equipment do I have available to use.
· Any aids available from the surroundings.
· Gear selection or diff-lock.
· Direction.
· Speed/Momentum.
· Tyre pressures.
· Pull or Snatch Strap.
· Winch.
· High Lift Jack or Airbag.
· Sand Ladders.
· Spade clearing.
· Rock clearing.
· Vehicle rocking.
Once you have studied all your options and decided on your course of
action, proceed with your recovery plan BUT DO NOT FORGET THE SAFETY ASPECT.
You do not want to add an injury to your predicament!
RECOVERY EQUIPMENT
PULL STRAPS
Pull straps have no stretch and may be used when the recovery vehicle
has good traction. Pull straps are available in various lengths and it
is advisable to have one ten metres in length. They should never be shorter
than five metres. Remember, cheap straps of any kind are usually not worth
the money you pay for them. A quality strap could save both you and your
vehicle.
Procedure
· Secure the strap to a recovery point on the stuck vehicle by
means of a loop on the strap or with a bow shackle.
· Take up the slack in the strap by slowly moving the rescue vehicle.
· When the strap is taut, continue to pull the vehicle out using
1st gear low range without any sudden jerks or power application.
SNATCH STRAPS
Snatch/Kinetic Straps are extremely useful when the rescue vehicle has
minimal traction on sandy or muddy surfaces. A high quality strap of at
least nine metres in length is recommended. It should have a minimum stretch
of around 25%. A strap which snaps can be extremely dangerous as the speed
and force of the broken end can result in extreme damage, injury or worse.
The vehicles should be properly aligned in order to utilise the maximum
energy of the strap.
Procedure
· Line the vehicles up.
· Clear as much sand or mud as possible from the path of the wheels.
· Lay out the strap between the vehicles ensuring that there are
no loops or knots.
· The rescue vehicle stretches the strap and the added rebound
force of the strap pulls the stuck vehicle out.
· The rescue vehicle should only exert sufficient force required
to extricate the stuck vehicle. Avoid using maximum force wherever possible.
· The rescue vehicle should no be lighter than the stuck vehicle
in order to avoid the rescue vehicle being pulled back to the stuck vehicle
when the strap rebounds. This could cause the rescue vehicle to be pulled
backwards out of control.
· Both vehicles should be in the same low gear and the stuck vehicle
should rotate its wheels slowly in the direction of the pull.
· It is advisable that a third person should direct the recovery
from a safe distance by using hand signals. This allows the two drivers
to keep their heads inside the vehicles out of harms way.
· The rescue vehicle should pull away with sufficient speed to
stretch the strap and should not over accelerate at this point as it may
bog down itself especially if it is in sand. There will be a moments pause
before the strap recoils and extracts the stuck vehicle.
· The recovered vehicle must at this point in time be careful not
to drive into the rescue vehicle.
· Both vehicles should continue until they reach a pre-determined
safe area to stop.
Safety Precautions
· Never connect a strap to a tow hitch ball.
· The Kinetic Strap should be connected to the vehicle’s
recovery point by means of a loop or bow shackle.
· Never use a bow shackle if the vehicle only has an open hook
as the shackle could become a missile if it breaks loose.
· Always attach safety straps.
· Place a bag (e.g. a recovery bag) or blanket over the centre
of the Kinetic Strap in order to reduce the velocity of the strap in the
event of something breaking loose.
· Open the bonnet/s in order to protect the windscreen/s if the
recovery points are in the front of the vehicle/s.
WINCHING
Winching can be extremely hazardous to life and limb. The following safety
procedures should always be followed:-
· Industrial gloves should always be worn to protect ones hands
from the sharp wire fibres.
· A badly frayed or kinked cable should not be used.
· Connect the cable to the anchor point with as few connections
as possible in order to avoid mishaps. Use the loop of the cable and not
the recovery hook whenever possible.
· When using the hook, face the back of the hook to the ground
as this will be the direction it will travel should something break.
· Always use shackles with a load capacity sufficient to handle
the vehicle’s mass plus the additional force created by the suction
of the mud or sand on the vehicle.
· Always use a safety strap.
· Always use a blanket, strap or similar means to reduce the velocity
of the cable should something snap.
· All bystanders should be at a safe distance (more than one and
a half times the length of the cable).
· The vehicles bonnet should be opened to protect the windscreen
and driver.
· The engine of the stuck vehicle should be running in order to
charge the battery if an electric winch is being used and also to ensure
that the vehicles brakes remain functional.
· The winch remote control should only be connected when the person
operating the winch is ready. The remote control should be disconnected
when not in use.
· The operator must always be in positioned in a safe place either
in the vehicle or behind the open door of the vehicle.
· Winch in a straight line.
· The cable should be checked periodically to ensure that it is
running evenly onto the winch drum. The tension on the cable should always
be released before checking.
· Before winching, there should be a minimum of eight turns of
cable on the winch drum. The friction of the cable on the drum holds it
there rather than the small nut that attaches to the end.
· When anchoring a recovery vehicle prior to winching, rather connect
it to the winch bracket at the front of the vehicle by running a strap
underneath.
· Always use a tree protector if using a chain around a tree to
prevent damaging the bark and/or the tree itself.
· Never use the winch cable as a tow rope.
SNATCH BLOCK
A Snatch Block allows one to change the direction from which the recovery
is being made and also effectively doubles the winch pulling power which,
in turn, effectively halves the winching speed.
ROCKING
Rocking the vehicle is used when a vehicle is trapped between two obstacles.
When a point is reached that the vehicle will not proceed any further
in one direction, the direction is then reversed with the traction available.
This is repeated until sufficient momentum is obtained to overcome the
obstacle and continue on ones way.
HI-LIFT JACK
A Hi-Lift Jack should be part of your rescue equipment. It can be used
to elevate a vehicle so that material can be placed under the wheels to
assist traction. The Hi-Lift jack can be fitted under a bumper which is
a mere 10cm off the ground and is able to lift almost 100cm. This allows
you sufficient space to remove rocks or other obstacles from under the
vehicle.