KUHN GMD 55, Руководство по сборке и эксплуатации

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BREAKAWAY LATCH
In rough field conditions the ground speed should be
reduced. The mower is protected with a breakaway
latch and if an obstruction is hit, the cutterbar must
swing back.
If the latch releases, stop the tractor immediately
and disengage the PTO.
To reset the cutterbar, back the mower until the
cutterbar is in its normal position. Do not raise the
cutterbar to relatch the breakaway. The latch is set
at the factory and in most conditions will be
satisfactory. Before using the mower the breakaway
linkage must be checked to make sure the
components are not rusted fast.
NOTE : Make sure all sliding areas are well greased.
Check for any cutterbar damage if an obstruction is
encountered.
If the cutterbar continues to break away, the spring
(R) (photo 34) can be tightened to increase the
breakaway pressure. Normally for the GMD 44 SE-
LECT the overall spring length (A) should be 76 mm
(3").
For the GMD 55/66 SELECT , the spring washer
length should be 94 mm (3 3/4") as shown at (Y) (fig.
35).
NOTE : DO NOT OVERTIGHTEN.
CUTTERBAR HEIGHT
1. Adjust the mower with the tractor hydraulic lift
system, to a height of 450 mm (18") at the center
of the hitch pins as shown on photo 33.
2. Attach the chain (D) (photo 33) to an upper hole on
the tractor clevis with the hook.
Completely lower the tractor linkage, height
adjustment is correct when :
- the cutterbar is resting on the ground
- the chain (D) is tight
- the distance between the hitch pins and
the ground is 400 mm (16").
After correct height is obtained the roll pin (dia. 5 x 45
mm) can be driven into the hook to retain hook in
correct link.