MTW BELARUS 952.5, Руководство оператора

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952.5-0000010 OM
84
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 replacing 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 the stops under the front and rear wheels, clean
the axle shafts from dirt;
- jack up the corresponding axle tube;
- loosen the wheel retaining nuts and remove the wheel;
- release by three full revolutions two tie bolts 1 (figure 3.2.6) of the inserts 3 and 4 (one
on each insert). The other bolts are to be screwed out. Remove blind plugs from the holes for
disassembly. Screw in the bolts of the inserts in the thread holes for disassembly;
- if it is impossible to squeeze the inserts out by means of disassembly bolts 1, fill kero-
sene 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 the table 3.5 to set the track “K” (figure 3.2.3) by
way of measuring the dimension “L” from the axle shaft end to the insert end face);
- screw the tie bolts out of the disassembly holes and screw them into the inserts.
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 Nm, place back the blind plugs;
- set the track for the other wheel by analogy;
- check and tighten the tie bolts and wheel retaining nuts after the first operation hour,
then after the first eight – ten operation hours and after every consecutive 125 hours of opera-
tion.
ATTENTION: AFTER TIGHTENING THE BOLTS MAKE SURE THE END SURFACES OF
THE UPPER AND LOWER INSERTS DON’T JUT OUT WITH RESPECT TO EACH OTHER BY A
VALUE OF 1…2 MM!
Table 3.5 – Rear wheel track installation variants (taper hubs)
Standard size of
tires
Variant
(Figure 3.2.3)
Dimension of track
“K”, mm
Mounting dimension
from the hub end face to
the axle shaft end “H”,
mm
А К ( А ) 1500…1600 69…19
18.4R34
B К (B) 1800…2100 183…33
ATTENTION: EX-WORKS DELIVERED REAR WHEELS ARE SET TO A TRACK UNDER THE
VARIANT A (FIGURE 3.2.3)!
3.2.10 Rear wheel twinning
With an aim to improve 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!