19
07.12
Strapex STM 61
6.3 SETTING CLEARANCE BETWEEN TENSION
WHEEL AND TOOTHED PLATE
The tension wheel and toothed plate must
not touch (damage the teeth). If the spacing
is too great, the strap slips through before the final
tension is reached.
– Loosen set screw (10/1).
– Set toothed plate (10/2) with screwdriver, so that
the clearance between tensioning wheel and too
thed plate is 0.2–0.5 mm (.0079“–.02“).
Turning clockwise decreases the clearance, turning
counterclockwise increases the clearance.
– Turn toothed plate so that a notch of the toothed
plate points in the direction of the set screw (10/1).
– Tighten set screw (10/1).
– Check clearance, reset if necessary.
1
2
1
2
3
4
5
7
6
Fig. 10
Fig. 11
0,2–0,5 mm
.0079–.02“
6.4 REPLACING TENSION WHEEL
If the tension wheel spins before the re-
quired strap tension is reached, the wheel
must be replaced (precondition: clearance set correct-
ly, see chapter 6.3).
Removal
– Remove retaining ring (11/5) and spacer washer
(11/4).
– Press pawls (11/7) and draw out tension lever shaft
(11/6) approx. 3 cm (1.18“).
– Raise rocker lever (11/1).
– Remove tension wheel (11/2) with spacer washer
(11/3) and replace tension wheel.
Installation
– Install the parts in revers order.
Before inserting the tension lever shaft
(11/6) check that the compression springs of
the pawls (11/7) are positioned correctly. Press pawls
and insert tension lever shaft. Clamp pawls with tensi-
on lever shaft and insert tension wheel with disk. The
45° chamfer of the tension wheel must be outside.
– Set clearance between tension wheel and toothed
plate (see chapter 6.3).
