Adjusting Twine Spacing-Manual Hydraulic Tie

Adjusting twine spacing on balers with hydraulic double twine wrap is a two part procedure that involves the following:

  • Setting distance (A) between twine arms to match desired twine spacing (A) on the bale. (Refer to decal located on left-hand side of tongue.)
  • Adjusting flow control valve to obtain appropriate sweep time (in seconds).

    NOTE: Sweep time is the time required for twine arms to travel from extreme right-hand side of baler (twine cylinder fully extended) to the home position (twine cylinder fully retracted). The flow control valve controls the sweep time and is adjusted by turning the valve knob clockwise or counterclockwise as necessary.

To adjust twine spacing:

1. Determine the desired twine spacing (A) on bale. There are four settings possible:

  • 50 mm (2 in.)
  • 100 mm (4 in.)
  • 150 mm (6 in.)
  • 200 mm (8 in.)

2. Set distance (A) between tips of twine arms to the desired setting by installing spring pin in the appropriate position.

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Decal on Left-Hand Side of Tongue


A-Twine Spacing Distance Between Arms

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NOTE: Distance between twine arms and sweep time must be synchronized or twine spacing will not be uniform.

Sweep times assume tractor is at rated PTO speed. If operating at less than rated PTO speed, increase sweep time. If operating at more than rated PTO speed, reduce sweep time.

Do not vary tractor PTO speed when tying bales. Bale rotation speed must be constant for consistent twine spacing from one bale to the next.

3. Set the sweep time as follows (refer to chart):

BALE HEIGHT TWINE SPACING
  50 mm
(2 in.)		 100 mm
(4 in.)		 150 mm
(6 in.)		 200 mm
(8 in.)
  SWEEP TIME (SECONDS)
1219 mm (48 in.) 21 10 7 6
1524 mm (60 in.) 25 12 8 7

 

a. On the twine spacing chart, locate the time (in seconds), bale height, and distance between twine arms.

b. Rotate adjusting knob (A) two complete turns clockwise from full open position. ( This will provide a starting point for adjusting the sweep time. )

c. Move twine arm to extreme right-hand side of baler (twine cylinder fully extended) using tractor hydraulics with tractor engine at rated PTO speed.

d. With tractor engine at rated PTO speed, move twine arms to home position while holding tractor SCV lever. Observe time for the arms to move from extreme right side of baler to home position.

  • If sweep time is too short, turn flow valve knob clockwise.
  • If sweep time is too long, turn flow valve knob counterclockwise.
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A-Adjusting Knob

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e. When desired sweep time has been obtained, turn knob locking ring clockwise and tighten.

For example: (Refer to chart) If making 1219 mm (48in.) bales with twine arm spacing set at 100 mm (4 in.), adjust valve knob (A) until sweep time equals 10 seconds.

  • If spacing between any two wraps on a bale is less than 100 mm (4 in.) apart, decrease sweep time by turning knob counterclockwise.
  • If spacing between any two wraps on a bale is more than 100 mm (4 in.) apart, increase sweep time by turning knob clockwise.

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