Dong Feng ZB 65, Руководство оператора

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Factory Direct Tractors
Mechanical Adjustment
5-2
Note: The main clutch should release when the
pedal is half way down its stroke and the PTO
clutch should release 30 – 40mm before the bottom
of the pedal stroke. Readjust as required.
5.3. Wheel adjustments
5.3.1 Toe-in adjustment
In normal operation the front wheels will periodically
require toe-in adjustment due to normal wear and
tear. If the adjustments are not carried out, rapid or
uneven tyre wear will occur.
Adjusting toe-in:
1. Steer the front wheels straight forward.
2. Measure the front and rear distances between
the steering wheels at axle height to the centre
of the tyre tread.
3.
Adjust the steering tie rod till the front distance is
4 to 12 mm less than the rear distance.
4.
Tighten the lock nuts on both ends of the
steering tie rod.
Note: One side of the steering tie rod has a left
hand thread.
5.3.2 Front axle pivot
The front axle pivot housing should have some
clearance with the front axle support bracket on
the tractor. This ensures the front axle can swing
through its limited range without slopping back
and forth on the pivot pin. Check and adjust the
clearance by removing the pivot pin and adding or
removing shims as required.
5.3.3 Rear wheel track – 4WD
The rear wheel track can be set to a number of
positions. Only use the maximum setting when
required. The front wheels should remain as
factory set or increased pressure will be applied
to the steering equipment and damage may result.
5.3.4 Rear wheel track
Rear wheels can be fitted with the concave side
of wheel disk facing either inward or outward. The
wheel track width is different for each of these
fitting positions.
Danger!
Only remove the rear wheels, when the tractor has
been stabilised with a suitable mechanical safety
stands, or an approved hoist.
Points for attention:
1.
After adjusting the wheel track make sure the
front and rear wheels are symmetrical about the
tractor centreline.
2.
Rear lug tyred wheels, can be swapped side to
side when adjusting the wheel tracks. (for rear
wheels only).
3.
Make sure that the direction of lugs are correct
for traction when moving forward.
5.3.5 Front drive axle
Oil is drained using three plugs. One at the diff
centre and the other two on the outside of the front
wheel hubs. The oil plug on the front wheel hubs
is also used as fill and oil level indicator by rotating
the front wheel hub to the required position. The
oil level should be half way up the hub. The front
axle oil is filled through the fill and dip stick plug
on the right hand side of the axle housing near the
breather tube.
5.4 Power steering structure and points for
attention
The power steering reservoir is located under the
bonnet near the radiator. As long as the engine
is running, the hydraulic pump will provide power
steering to the tractor which won’t be affected
when using the hydraulic linkage system.
1.
Power steering is provided through the hydraulic
steering orbital. It requires a light force of 4 – 5
Nm (2.5 – 3.5ftlb) to steer the tractor in normal
dry conditions. If the steering jambs or becomes
heavy do not use excessive force or wrench the
steering wheel as damage could result.
2. If moving the tractor manually by towing or
pushing, do not apply a force greater than
250Nm (180ftlb) to the steering wheel.
3. Servicing and maintaining the hydraulic orbital
gear should be carried out by a qualified trade’s
person.
4.
Ensure the nuts, bolts and hydraulic connections