Mud, Snow & Sand
Shift to
4WDH
range first gear when traversing without load.
Do not shift into any lower gear than is necessary to maintain
headway. Tyre pressure may be reduced by about 0.7 kg/
cm2 (10 psi), if additional floatation is required.
Up hill
Shift to
4WDL
range, second gear. Drop down to first gear
only when the steepness of the ascent requires the lower gear
to maintain headway.
Note
Over-reving the engine will cause the wheels to start spinning
& traction will be lost.
Getting over the Hump
If the wheels start to slip with only a few feet of the ascent
remaining, headway may be maintained by swinging the front
wheels sharply left & right. This will provide a fresh 'bite' into
the surface & will usually result in enough traction to
complete the climb.
Stall
If the vehicle stalls or loses headway when climbing a
steephill, make a fast shift to reverse or first gear. Do not
depress the clutch. Engine compression will hold the vehicle
on the hill. Do not try to back down with the clutch released
& only the brakes holding the vehicle. By shifting to reverse,
it is possible to start the engine without depressing clutch.
Let the vehicle move backward with the starter. When engine
starts, control the downward speed with the accelerator.
Down hill
Shift to
4WD
range, first gear. Do not use clutch & brakes.
Now the vehicle can proceed safely down a grade slowly with
all 4 wheels turning against engine compression.
Caution
z
As soon as the vehicle finishes, its traversing through the
hubs in sand, mud or water, clean the brake drums from
foreign abrasive materials sticking to it to avoid the
wearing of brake linings.
z
When negotiating across slopes or hill, choose as mild
an angle as possible (keep moving & make turns quickly).
Do not travel diagonally across a hill unless absolutely
necessary.
z
For normal driving on hard surfaced roads, 4WD should
not be used.
z
To relieve the build up of torsional stresses, due to
prolonged use of 4WD on hard surface roads, simply drive
the vehicle in reverse for several feet or drive off hard
surface momentary to allow tyres to slip.
Gear Shifting - 4 WD
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Mahindra THAR
Содержание THAR 2009
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