VI - 9
Maintenance
6.9 Chain tension
6.9.1 Pick-up drive unit
The pick-up drive unit is located at the front on the left
hand side of the feeder wagon.
Spring length under tension X = 30 mm
6.9.2 Scraper-floor advance
The scraper floor of the feeder wagon is tensioned
automatically. The operation of the tensioning device must
be checked regularly.
After long periods of operation, the scraper-
floor chain may strech so that automatic
tensioning is no longer guaranteed. In this
case, the chain must be shortened by 2 or 4
links.
KDW0412
1
x
2
For separate scraper floors with 4 chains
• Hook in the spring clamp (2).
• Using a nut, draw the threaded spindle (1) out until the
scraper-floor tensioner can move freely.
The tension spring is under high tension.
Repair work on the automatic tensioning
device must only be carried out by specialists
using an assembly tool which is suitable for
the purpose.
KDW00100
2 1
3
Shortening the scraper-floor chain
• Remove the cotter pin (1) on the chain joint (3).
• Remove the locking piece (2)
• Shorten the chain by 2 or 4 links at a time.
• Join the chain with the chain joint (3).
• Secure the locking piece (2) and cotter pin (1).
Both scraper-floor chains must be
shortened by the same amount. In the case
of double scraper floors, the respective
associated pairs of chains must be
shortened.
Activate the automatic scraper-floor tensioner again
KDW05060
3
2 1
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