FIELD OPERATION
4-118
GRAIN LOSS MEASURING KIT -- Figure 174
(Part number 80456667 - can be ordered from your
local dealer).
LOSSES
Losses may occur at different stages:
a) Pre-combining losses (i.e. losses found in front
of the combine) are usually caused by adverse
weather conditions, poor crop conditions and crop
maturity.
b) Header losses: (i.e. losses found behind the
header and outside of the tyres) may be caused by
improper header adjustments.
c) Leakage losses may be caused by damaged
seals or holes in bottom auger covers.
d) Shoe losses may be caused by a poor sieve ad-
justment, or low cleaning fan speed, or when
working on slopes (exceeding the capacity of the
sieve levelling system [if fitted]).
e) Fan losses are caused by an excessive cleaning
fan speed.
f) Straw walkers losses. These can be unthreshed
ears (underthreshing) or grains, due to poor ad-
justment of drum and concave or excessive
ground speed.
20956
174
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