Zetor 86 41 forterra turbo, Operator'S Manual

Page: 152 / 257

152
CHANGING THE WHEEL TRACK
F_02_99 F218
CHANGING THE TRACK OF THE
REAR WHEELS
Depending on the rear tire width, the
wheel track within the following ranges:
Rear tire width Track
(mm)
18,4-38
480/70R38
520/70R38
1650 – 1800
1575 – 1800
1650 – 1800
16,9-34
16,9-38
18,4-34 1500 – 1800
1575 – 1800
1500 – 1800
The track of the rear wheels is adjust-
able by 75-mm intervals and it is per-
formed with changing the positions of
the rim and disk.
SETTING THE REAR WHEEL TRACK
Track of the rear wheels is adjustable by 75-mm intervals and it is carried out with
changing the positions of the rims and disks while the rear part of the tractor is lifted
for the wheels to be free for rotation.
Before the lifting, do not forget to assure the tractor against the spontaneous
move with putting chock blocks to the front wheels.
After changing the wheel track, tighten all the bolts joining the disks with the rims
with a torque between 230 and 250 Nm, and the nuts joining the disks with the
wheel axle, with a torque between 400 and 470 Nm.
−
After each release of the bead joint, tighten the bolts to the prescribed value.
−
After covering a 100-m distance with an unloaded tractor tighten the joints again
with the prescribed torque.
−
With the loaded tractor, tighten the joints after 3 operating hours.
−
After 10 operating hours, revise the disk and wheel rim beads tightening.
−
Until the first 100 operating hours are worked out, revise the tightening of nuts,
disks, and beads of the front and rear wheels frequently (at least 6 times in the
course of the first 100 operating hours.
−
Then revise the tightening of disk nuts and rim beads of the front and rear wheels
after each 100 operating hours performed.