McHale Fusion 2 - Cut and Hold System

McHale Fusion 2 wrapper operation section
08- 5
McHale Fusion 2 round baler wrapper technical service manual
Issue 1: 0208
8.5 Cut and hold system
Warning! The cut and hold system utilises knives and accumulators in order to
function. Beware of serious injury when carrying out any maintenance in this
area, turn off tractor and remove key. Wear protective gloves and clothing at all
times. Also never carry out any work on the hydraulic hosing as even when the
machine is off, hosing remains under high pressure due to accumulators!
The cut and hold system on the McHale Fusion 2 is designed to operate in
conjunction with both the dispenser and table rollers to cut the plastic after a desired
amount of film wrap has been applied to the bale, as set on the control box, see
sections 8.2, 8.3 and 8.4 for more information on the wrapping process. The cut and
hold system operates by way of a slider (D) that slides in and out using a hydraulic
ram. The slider (D) then clasps the film and retracts to hold the film between (C) and
(D) and then is cut at knife point (B). Once the wrapping process resumes the film is
then released.
Warning: Before working on Cut & Hold rails, always release all oil pressure
from accumulators, by slowly opening pressure hose (Fig. 8.52) and allowing all
the oil to release. Accumulator pressure will reset automatically following the first
operation of the cut & hold cylinder in the fully out direction.
Never work on the Cut & Hold by holding out the rails against the oil pressure.
The cut and hold knife may be adjusted in and out by following the procedure below
and by referring to figure 8.51:
1. Remove the two M6 nyloc
nuts and bolts that hold knife
plate (A) using 10 mm spanners,
beware of cutting knife!.
2. Move knife plate to desired
position, factory set to fully out
position as shown.
3. Insert the two M6 bolts and
tighten nyloc nuts.
4. Repeat for other cut and
hold.
Fig. 8.51 Cut and hold knife adjustment and removal.
The cut and hold knife blade condition is very important for the proper
operation of the cut and hold system. A blunt blade may not cut the film cleanly or
possibly not at all, as such, the knives must be changed as soon as it becomes
blunt. New knives may be obtained under part number CKN00011. Ensure all safety
precautions are taken before carrying out the following procedure.