WORKSHOP MANUAL
Map of functional units
TC 108 SD - TC 118 SD
B) Adjustment of the steering wheel
Firstly check the toe-in (point “A”) and align the front
wheels.
If the steering wheel is not straight, dismantle the ar-
ticulated joint (5) and screw or unscrew it on the tie-
rod (6) as much as necessary.
On assembly, fully tighten the locknut (7) and the fa-
stening nut (8) and check that the tie-rod, in its travel,
does not interfere with parts or accessories of the en-
gine even with the equaliser (9) angled in both direc-
tions.
NOTE Before any other action, check that the joint
fastenings have not worked loose.
A) Toe-in adjustment
An exact toe-in is achieved with a centre distance of
515 mm which is measured between the centres of
the articulated joints (1) of the wheel connection rod
(2).
If a dierent distance is found, dismantle one or both
the joints and screw or unscrew them on the rod (6) as
much as necessary.
On assembly, fully tighten the locknuts (3) and the fa-
stening nuts (4) of the joints.
General informations
The correct steering geometry is given by the va
lues of the centre distance between the joints of
the tension rod and the wheel connecting rod.
Any faults caused by knocks or accidents result
in re duced driving precision and increased wear
on the tyres. These can be overcome as follows:
– uneven or excessive wear on the front tyres =
toein adjustment
– the machine does not maintain a straight line
when the steering wheel is straight = adjust
ment of tierods.
Related topics
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Tightening torques
3-7
Locknuts for articulated joints ............ 25 ÷ 30 Nm
4-8 Nuts for articulated joints ..............45 ÷ 50 Nm
STEERING GEOMETRY ADJUSTMENT
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