Iran Tractor ITM 950, Operators Instruction Book

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4
Maintenance and adjustment
76
and the adjustment link bolt (2).
2. Change the position of the alternator
to give the correct tension. Tighten the
bolts.
3. Recheck the belt tension to ensure that
it is still correct.
Fig. 42:
1
2
NOTE
If a new belt is fitted, check/adjust
the tension again after 25 hours of op-
eration.
HEADLIGHTS
Headlight adjustment
To adjust the headlights, screw the
three screws (Fig. 43) in or out as re-
quired, this will deflect the beam up, down
or sideways.
Fig. 43: Headlight adjustment.
To adjust the beam:
1. Position the tractor facing a wall or
screen, 2m (6 ft) away (Fig. 44).
2. Mark a point on the wall or screen by
sighting down the hood centre line.
3. Draw a vertical line (1) through the
point.
4. Draw a horizontal line (2) through the
vertical line (1) at headlight height (4).
5. Mark two points (3) on the horizontal
line representing the distance between
the two headlights, spaced equally ei-
ther side of the vertical line (1).
Fig. 44: Headlight beam setting.
1
2
3
3
4
6. Adjust each headlight individually by
obscuring the other, so that the points
(3) marked on the wall or screen are
in the centre of the beam. The centre
of the headlight beam may be found by
marking the extremities of the beam
both vertically and horizontally, and
dividing by two.