82.3-0000010 OM
81
The rear wheel track with the wheels of basic configuration 18.4R34 is changed by
moving the hub together with the wheel over the axle shaft and by re-placing the wheels
from one sideboard to the other one.
To change the rear wheel track perform the following operations:
- put the tractor on a level ground, put stops under the front and rear wheels, clean
the dirt off the axle shafts;
- jack up the corresponding axle tube;
- loosen the wheel retaining nuts and remove the wheel;
- release by three full revolutions two coupling bolts 1 (Figure 3.2.9) of the inserts 3
and 4 (one on each insert). Undo the other coupling bolts. Remove blind plugs from the
holes for disassembly. Screw in the bolts of the inserts into the thread holes for disassem-
bly;
- if it is impossible to squeeze the inserts out by means of disassembly bolts 1, fill
kerosene or other liquid penetrant in places where inserts are detached from the hub body,
wait for some time and then screw the disassembly bolts in, simultaneously knocking on
the hub body until the inserts fully squeeze out;
- move the hub to a required track (use Table 3.2.7 to determine track “K” (figure
3.2.6) by way of measuring the dimension “L” from the axle shaft end to the insert end
face);
- screw the coupling bolts out of the disassembly holes and screw them into the in-
serts. Tighten the bolts with a torque of 360 to 450 N·m in several stages until all bolts are
tightened with the required torque;
- mount the wheel on the hub, tighten the wheel retaining nuts with a torque from
300 to 350 N·m, place back the blind plugs;
- set the track for the other wheel by analogy;
- check and tighten the coupling bolts and wheel retaining nuts after the first opera-
tion hour, then after the first eight–ten operation hours and after every consecutive 125
hours of operation.
ATTENTION: AFTER TIGHTENING THE BOLTS, MAKE SURE THE END SUR-
FACES OF THE UPPER AND LOWER INSERTS DO NOT JUT OUT WITH RESPECT TO
EACH OTHER BY A VALUE OF OVER 1…2 MM!
Table 3.2.7 – Rear wheel track installation variants (taper hubs)
tires
Variant
(Figure 3.2.6)
Dimension of track
“K”, mm
Mounting dimension
from the hub end face to
the axle shaft end “H”,
18.4R34
ATTENTION: EX-WORKS DELIVERED REAR WHEELS ARE SET TO A TRACK
UNDER THE VARIANT A (FIGURE 3.2.6)!
Note – Contact your dealer for information on track formation rules for rear wheels
of different configuration.
3.2.10 Rear wheel twinning
With an aim to improve towing and gripping properties of the tractor when coupled
with heavy agricultural implements on soils with low bearing capacity, rear wheel twinning
with use of spacers is provided.
To receive information on the rules of rear wheel twinning and operating restrictions
for the tractors with rear wheels twinned, please, contact your dealer.
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