Steering Geometry Adjustment - Global garden products 72 Serie Kundendienst Handbuch

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STEERING GEOMETRY ADJUSTMENT

4.8 STEERING GEOMETRY ADJUSTMENT
The correct steering geometry is given by the dis-
tances between centres of the two tie-rods con-
necting the wheels. Any faults caused by knocks
or accidents result in reduced driving precision
and increased wear on the tyres.
These can be overcome as follows:
– uneven or excessive wear on the front tyres =
toe-in adjustment,
– the machine does not maintain a straight line
when the steering wheel is straight = adjust-
ment of tie-rods.
NOTE
Before any other action, check that the ball joint
connections have not become loose.
A) Toe-in adjustment
The exact toe-in is obtained when there is a dis-
tance of 429 - 431 mm measured between the two
centres of the stub axle joints (1) which is obtained
when the distance between the joints of the two tie-
rods (1 – 2) is 200.5 - 201.5 mm [see 8.2.3].
If the amount is different to this, check if the error is
due to one or both of the tie-rods. Dismantle the
part concerned, loosen the locknut (3) and screw
the joint up or down on the rod (4) until achieving
the exact amount.
NOTE
The two tie-rods must always be adjusted to the
same length.
On fitting, fully tighten the locknuts (3) and the nuts
(5) fastening the joints.
B) Adjusting the steering wheel position
Firstly check the toe-in (point "A") and align the
front wheels.
If the steering wheel is not straight, check that both
tie-rods have the same distance between the joints
(1 – 2) (200.5 - 201.5 mm) [see 8.2.6].
Having identified the part that has a different length,
adjust as indicated in point «A».
© by GLOBAL GARDEN PRODUCTS
WORKSHOP MANUAL
4.8.
0
429 - 431 mm
200,5 - 201,5
mm
1 2
5
On fitting, fully tighten the locknuts (3) and the nuts (5)
fastening the joints.
When the adjustment has been made, check the toe-in
as described at point "A".
Tightening torques
3 Locknuts for articulated joints .......... 25 ÷ 30 Nm
5 Fastening nuts for articulated joints. 45 ÷ 50 Nm
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