7.6.3. ADJUSTING THE REAR AXLE
DIFFERENTIAL LOCK-UP CONTROL
(TRACTOR EQUIPPED WITH HSB)
To ensure normal operation of the differ-
ential lock-up controls, make proper ad-
justment of the relative position of the
handle (4) (see Fig. 51) and the lock-up
sensor valve (1). To do this:
Fig. 51
а) fix the free end of cable (2) in the
clamp by means of screw (3), the
cable end should be 5-10 mm, max.,
beyond the clamp;
б) set the handle (4) to position I (see
item 3 in Fig. 3а). Tighten the cable
before the valve turn is started and
fix the coupling with the screws (3);
bring the second clamp against the
coupling and lock it with the screw.
As a check on correctness of adjustment,
set the handle to position II. Now, the
mark on the screen (1) should be level
with the mark «Engaged» on the locking
sensor cover. The handle and the valve
should return from positions II and III to
position I under the force of the spring.
7.6.4. ADJUSTING THE BRAKE
CONTROLS
To adjust the brake controls, proceed as
follows:
а) unscrew locknuts (1) (see Fig. 52) of
bolts (2);
Fig. 52
Fig. 53
b) screw bolts (2) into the adjusting
forks or screw them out to the extent
where the full travel of the right-hand
brake pedal on tractors equipped
with small-size cabs to be 70…90
mm; on tractors equipped with a
unitized cab — 110…120 mm at a
force of 12 kgf applied, with the brak-
ing distance not more than 9.0 m at
a road speed of 25 km/h and a force
at the interlocked pedals of 600 N.
Also, non-coincidence of wheel brak-
ing commencement should be no
more than 1 m (by a tyre tread im-
print). The left-hand brake pedal
travel should be 5…20 mm shorter,
to ensure simultaneous operation of
the brakes when interlocked pedals
are activated. A pedal travel of less
than the above-stated values should
be inadmissible, since it results in a
premature wear of the linings and
brake overheating
c) fasten down the lock-nuts (1).
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