5 Inspection and maintenance
LS Open Loop Vector Motor 4H42, 4H71, 4H72 Manual Supplement
za-o.2.8.41-us-1.1
August 2022
Page 22
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5.5
Replacing the pressure springs
CAUTION
Brake dust is hazardous to health.
Do not clean hoist motor brakes with compressed air, brushes or similar.
Use a vacuum system or a damp cloth to remove brake dust.
If dust develops, wear safety eyewear and a fine dusk mask.
(1) Fastening screws
(2) Coil carrier
(3) Pressure spring
(4) Anchor plate
(5) Shoulder screws
(6) O-ring
1.
For preparatory tasks, see the
Replacing the brake rotor
section.
2.
Set the coil carrier (2) down on a clean work surface.
It is recommended to mark the installation position of the anchor plate before
disassembly.
CAUTION
The pressure springs push against the anchor plate; injuries can result
from incorrect loosening.
In order to remove the shoulder screws, press the anchor plate against the coil carrier
(with larger sizes use a spindle press if necessary) to avoid sudden relief of the spring
pressure. Observe the installation position of the anchor plate.
3.
Unscrew both shoulder screws (5) uniformly in turn.
4.
Remove and set down the anchor plate (4) and shoulder screws (5).
NOTICE
When dampening the cloths,
only use
isopropyl alcohol. The use of brake
cleaner is
not
permitted.
–
Ensure sufficient drying time for the cleaned surfaces.
5.
Clean the anchor plate (4) with a damp cloth.
6.
Remove all old pressure screws (3) from the coil carrier (2).
7.
Clean the coil carrier (2) with a damp cloth.
Summary of Contents for 4H42
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