Rear Dual Wheel Row Crop Settings and Dual Hub Extensions—Cast Drive Wheels

IMPORTANT: Tractors equipped with tires narrower than 520 and have two 205 kg (452 lbs) inner wheel weights must not set rear treads narrower than 1676 mm (66 in.). Doing so will result in damage to tractor.

18.4 or 480 Section Dual Rear Tire and Hub Extension
Row Spacing - inch	20	22	30	32	34	36	38	40
Drive Wheel - inch	Not Available	Not Available	60	64	68	72	76	80
Dual Wheel - inch	Not Available	Not Available	120	128	136	144	152	160
Dual Extension (110.5 in. Axle) - inch	Not Available	Not Available	NR	5	10	10	15	Not Available
Dual Extension (118.5 in. Axle) - inch	Not Available	Not Available	NR	NR	5	10	10	15
520 or 20.8 Section Dual Rear Tire and Hub Extension
Row Spacing - inch	20	22	30	32	34	36	38	40
Drive Wheel - inch	Not Available	Not Available	Not Available	64	68	72	76	80
Dual Wheel - inch	Not Available	Not Available	Not Available	128	136	144	152	160
Dual Extension (110.5 in. Axle) - inch	Not Available	Not Available	Not Available	5	10	10	15	N/A
Dual Extension (118.5 in. Axle) - inch	Not Available	Not Available	Not Available	Not Available	5	10	10	15
620 or 710 Section Dual Rear Tire and Hub Extension
Row Spacing - inch	20	22	30	32	34	36	38	40
Drive Wheel - inch	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	80
Dual Wheel - inch	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	160
Dual Extension (110.5 in. Axle) - inch	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	15
Dual Extension (118.5 in. Axle) - inch	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	Not Available	13
NR = Dual hub extension, not required for tread setting