McHale Orbital Round Bale Wrapper
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5
Tractor requirements & preparation
5.1 Tractor requirements
The minimum recommended size of tractor for operating the machine comfortably is
35 kW. On hilly ground or difficult conditions, an additional 10 to 15 kW is advisable.
The following items on the tractor are required for attachment of the machine behind
the tractor:
1. Drawbar hitch suitable for a vertical load of at least 1,470 kg and a D value of
at least 38 kN
2. Two ½” female quick-releases (feed and return) for hydraulic power supply.
The return line must be freeflow to tank (check with a McHale dealer for details)
3. ⅜” female quick-release for load-sensing (Only required if tractor has a load-
sensing hydraulic system)
4. Two ½” female quick-releases (double-acting spool) for drawbar ram
5. 12 V/ 10 A socket or battery power cable
6. 12 V/ 7-pin lighting socket
7. Suitable location to attach safety chain. The safety chain must be attached in
such a way that if the coupling breaks, the hitch or drawbar cannot make
contact with the ground.
5.2 Connecting the control box
The electronic control box must be located inside the tractor cab in the operator’s field
of vision and within easy reach of the red emergency stop button. (See ‘Electronic
control system’). Secure the control unit in the tractor cab, using the V-brackets and
fasteners provided. The male half attaches to the control box and the female half
attaches to the tractor cab allowing for quick replacement/removal, every time it is
used. Ensure that the cable to the machine is not under tension and not near sharp
edges, etc. The control box is to be connected to a 12 V, 10 A power supply, using the
supplied power lead or the battery power cable. The control box is not waterproof, it
must be protected from rain.
NOTE: Use good quality oil
Ensure that the tractor has clean, good quality, hydraulic/universal oil to
avoid problems later on. Also, the hydraulic filters on the tractor should
be changed regularly, according to the manufacturer’s service
instructions. Avoid dirt getting into the hydraulic couplings.