OMWZ72401: 724, 732 and 740 Trailed Crop Sprayers, Block File: WZ00085_00003DD_19

Steering Drawbar Pivot

Machines with a steering drawbar and automatic tracking system (B) are tracking accurately if the drawbar pivot is exactly halfway between the tractor rear axle and the sprayer axle (H1 = H2 = 2439 mm), with an acceptable tolerance of plus or minus 50 mm. To achieve this, the distance between the pivot of the drawbar and the rear axle of the tractor must be 2439 mm, (+/- 50 mm). With the steering drawbar, the horizontal distance of the drawbar pivot to the tow eye is adjustable. This drawbar length can be adjusted by repositioning the front end of the drawbar with tow eye which can be fixed into the drawbar with 8 bolts (C) at different positions (adjustment holes). In this way, the length of the drawbar can be changed up to 200 mm.

A-Distance rear axle-tow eye
B-Steering drawbar
C-Length adjustment

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A-Distance from tow hook to the rear axle of the tractor
B-Length of complete drawbar with tow eye

C-Length from flange - tow eye centerline

H1-2439 mm (+/- 50 mm)
H2-2439 mm (+/- 50 mm)

1-7-Adjustment positions of drawbar

Adjust drawbar length for accurate trailing

Adjust the distance between the drawbar pivot and the tow eye depending on the type of tractor (distance between rear axle and tow hook) being used for spraying. The length of the drawbar plus the distance from the tow hook to the rear axle of the tractor should be as close as possible to 2439 mm (+/- 50 mm). A well-fitting draw pin is essential for the proper functioning of the automatic tracking system.

The following table shows different drawbar length adjustments (B) matching best with different tractor tow hook positions (A) in order to ensure accurate trailing (H1 = 2439 +/- 50 mm).

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causym CAUTION: Always use all eight bolts to connect the drawbar adjusting support to the drawbar. Refer to "Metric Bolt and Cap

Screw Torque Values" for the required torque.

Sprayer drawbar tow eye configuration	Bolt Positions 1-3	Bolt Positions 2-4	Bolt Positions 3-5	Bolt Positions 4-6	Bolt Positions 5-7
Fixed tow eye 40 mm (with German TÜV approval) Length (C) 250 mm	A = 628 mm B = 1811 mm	A = 678 mm B = 1761 mm	A = 728 mm B = 1711 mm	A = 778 mm B = 1661 mm	A = 828 mm B = 1611 mm
Fixed tow eye 50 mm^a Length (C) 250 mm	A = 628 mm B = 1811 mm	A = 678 mm B = 1761 mm	A = 728 mm B = 1711 mm	A = 778 mm B = 1661 mm	A = 828 mm B = 1611 mm
Ring tow eye 50 mm^a Length (C) 292 mm	A = 586 mm B = 1853 mm	A = 636 mm B = 1803 mm	A = 686 mm B = 1753 mm	A = 736 mm B = 1703 mm	A = 786 mm B = 1653 mm
Ring tow eye 50 mm (with German TÜV approval) Length (C) 387 mm	A = 491 mm B = 1948 mm	A = 541 mm B = 1898 mm	A = 591 mm B = 1848 mm	A = 641 mm B = 1798 mm	A = 691 mm B = 1748 mm
K-80 Ball coupling (with German TÜV approval) Length (C) 240 mm	A = 638 mm B = 1801 mm	A = 688 mm B = 1751 mm	A = 738 mm B = 1701 mm	A = 788 mm B = 1651 mm	A = 838 mm B = 1601 mm
^aThis tow eye does not have a TÜV approval and is therefore not allowed in Germany

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