24
12.08
Strapex STB 63
7 PREVENTIVE AND CORRECTIVE MAINTENANCE
7.1 CLEANING/REPLACING TENSION WHEEL
Removal
– Remove battery from tool.
– Release three sunk screws (20/2) and remove cover
(20/3) with ball bearing.
– Lift rocker lever (20/4) and remove tension wheel
(20/1).
– Clean the tension wheel with compressed air (wear
goggles).
– If the tension wheel teeth are covered with heavy
dirt, they must be carefully cleaned with the wire
brush supplied.
– Check tension wheel for worn teeth. If a few teeth
are broken, replace tension wheel (observe rotating
direction, see arrow)
The tension wheel must not be cleaned
while it is rotating. There is a risk of
breaking teeth!
Installation
– Install the parts in reverse order.
– Grease gear teeth of tension wheel lightly with
Klüber grease GBU Y 131 (Microlube).
– When mounting tension wheel lift rocker lever.
7.2 CLEANING/REPLACING TOOTH PLATE
Removal
– Remove battery from tool.
– Release sunk screw (21/1) and remove tooth plate
(21/2).
– Clean tooth plate with compressed air (wear
goggles).
– If the tooth plate teeth are covered with heavy dirt,
they must be carefully cleaned with the wire brush
supplied or a sharp tool.
– Check tooth plate for worn teeth, if necessary
replace tooth plate.
Installation
– Install the parts in reverse order.
– Secure sunk screw (21/1) with Loctite 222.
7.3 REPLACING CUTTING KNIFE
Removal
– Remove battery from tool.
– Release sunk screw (22/2) and cylinder screw
(22/1) and remove cover (22/3).
– Release cylinder screw (22/6) and remove cutting
knife (22/4) with fl anged bushing (22/5). Replace
cutting knife.
Installation
– Install the parts in reverse order.
– Before install cutting knife, check that the compres-
sing spring on top of knife is still mounted.
– Secure screw (22/1), (22/2) and (22/6) with Loctite
222.
All preventive maintenance tasks can be
performed with a Phillips screw driver!
Fig. 22
1
2
3
4
5
6
Fig. 21
1
2
Fig. 20 (2 = Tension wheel type for STB 63)
2
1
3
2
4
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