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of 28
V 03.17
STRAPEX STB 71/73/75
ENGLISH
6
Preventive and corrective maintenance
WARNING
Unexpected startup during maintenance work, injuries possible.
Always remove the battery before performing cleaning or preventive and corrective
maintenance work.
6.1
Preventive maintenance schedule
Task
Interval (cycles)
Cleaning the tool (Section 6.2)
– Daily (for > 300 strappings/day)
– Weekly (for 100-300 strappings/day)
Re-greasing the tool (Section 6.3)
– Monthly (for 100-300 strappings/day)
Tool inspection (recommended)
– Every 2 years or 80,000 strappings, service
by specialist unit
6.2
Cleaning the tool
In the case of heavy dirt accumulation it is recommended that the tool be cleaned regularly (daily). In
particular, the tension wheel and the tooth plate should be checked for damage and kept clean.
WARNING
Wear eye protection when cleaning with compressed air!
►
In the rear housing shell beneath the motor the tool has an access hole (Ø 3 mm) through which
the welding device is first blown out with compressed air.
►
After this, clean the tension wheel and toothed plate with compressed air by blowing them out from
the sides.
►
If necessary, clean/replace the tension wheel / tooth plate (Section 6.4/6.5).
6.3
Re-greasing the tool
To ensure optimal stability it is recommended that the tool be re-greased regularly.
►
Remove battery from tool. Remove four cylin-
der screws Torx (2), strap guide rear (3) and
side cover (4).
►
Carefully spray welding device at the two
points (5) with a high-pressure-resistant
adhesive lubricating oil spray (e.g. Würth HHS
2000).
►
Below at the base plate, remove counter-
sunk screw Torx (1) and also spray into the
lubrication hole with the same spray.
Refit the
counter-sunk screw (1)
.
► Refit the side cover (4).
6.4
Cleaning/replacing the tension wheel
Required parts
Order number
STB 71 / STB 73: Tension wheel (1)
(wear part)
1821.047.033
STB 75: Tension wheel (1)
(wear part)
1821.047.036
Ball bearing, Ø35/47x7 (2)
1930.180.356
Cylinder screw Torx, M4 (4)
1821.027.063
Wire brush (6)
1821.901.004
STB 75
1
3
4
2
5
