Maintenance Operating Mechanism Maintenance
14 1HSB515409-100 en rev2
4.5 Lubrication
The ball, roller and needle bearings in the operating mechanism are permanently
lubricated and require no maintenance. Therefore only the shafts in catch gears and
worm gear in the drive unit need to be lubricated.
• Check whether the chains in the operating mechanism are dry and corroded
and, if necessary, lubricate with Grease “G” or oil “A”.
Sliding surfaces for the spring yoke and dashpots should be lubricated during an
overhaul with Grease “G” .
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