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14 | TCE 422X | Adjustments
3.
Adjustments
�.1
Head group adjustments
Every machine is perfectly adjusted before being sent.
However, you could need to recalibrate the head (after
a long period of work, after substituting mechanical
members or according to particular uses of the tyre
changer).
You can adjust the head in three different directions:
R
Horizontal (distance between nail and circle);
R
vertical (distance between the body of the head and
the circle);
R
in a circle.
�.1.1
Check of the vertical position
1. Mount a circle with an average size from 15 to 17";
2. Block it on the self-centring plate;
3. Bring the tool (head) towards the circle;
4. Block through the suitable control;
5. Check the distance after locking (about 2mm be-
tween the wing of the tool and the circle).
Correction
1. Identify the two adjustment screws which are posi-
tioned in the front of the stilting column;
2. Loose the two locking lock nuts;
3. Loose totally one of the two adjustment screws;
4. Unblock the head and work on the screw that re-
mained in position:
$
If you turn it in a clockwise direction, you increase
the distance;
$
If you turn it in an anticlockwise direction, you
decrease the distance.
5. Turn the screw in the direction that you wish and
check the position again;
6. When the result that you obtained is suitable for you,
tighten the screw again;
7. Unblock the tool group and tighten the lock nuts
while keeping the screws in position.
�.1.2
Correction of the position of the head in
circle
You need to adjust the position when the tyre tends to
slide from the tool during the assembly.
Instructions:
1. Open the locking screw which is positioned under
the tool;
2. Loosen the two studs;
3. Position the tool correctly;
4. Tighten the first stud paying attention to maintain
the direction given;
5. Tighten the second stud;
6. Close the screw again.
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1 695 106 342
2008-10-17
�.2
Adjustment of the drive belt
To adjust the belt:
1. Disconnect the power supply;
2. Remove the closing carter on the left;
3. Open the lock nut positioned on the motor support;
4. Work on the tie rod to achieve the correct tension
(the correct excursion is about 50mm);
5. Tighten the lock nut again;
6. Close the protection carter;
7. Trial the correct functioning.
�.�
Substitution and adjustment of the
tie rod shock absorber column
In order to substitute the tie rod or to adjust the shock
absorber, follow these instructions:
1. Disconnect the power and the pneumatic supply;
2. Remove the closing carter on the left;
3. Overturn the column manually;
4. Remove the external ring;
5. Extract the control pivot;
6. Remove the defective tie rod;
7. Insert the new tie rod, and mount the shock absorb-
er, washer and the two nuts;
8. Help yourselves with a screwdriver to centre the rod
of the cylinder and the tie rod through the holes on
the column;
9. Insert the pivot;
10. Connect the pneumatic supply;
11. Start adjusting the first nut until the opening of the
column is absorbed;
12. Tighten the lock nut;
13. Close the carter on the left;
14. Connect the power supply.
Robert Bosch GmbH
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