1-7
Transmission:
Standard 2-Wheel Drive:
Powershift transmission with four speeds in forward and reverse. Provides powershifts at
any engine speed in any gear. All shifting is done with a single lever electrical control
mounted on the steering column. Multiple-disc clutch packs operated by solenoid valves
provide reverse, neutral, forward and speed selection. Equipped with oil cooler and filter.
Optional 4-Wheel Drive Transmission:
Same as 2WD transmission with an additional output shaft to drive the rear axle. Rear
output shaft runs faster than front by a ratio of 1.58 to 1. Rear axle has more reduction than
front axle to match speed of front. Electrohydraulic control for shifting between 2WD and
4WD. This option includes the 4-wheel drive axle listed below. (Net Weight: 310 pounds
(141kg) for 4WD system)
Transmission gear ratios: Forward and Reverse (2WD & 4WD)
1st 5.72 to 1.0
2nd 3.23 to 1.0
3rd 1.77 to 1.0
4th 1.00 to 1.0
Torque Converter:
Standard:
Stall torque ratio of 2.2:1, attached to engine flywheel.
Front Axle:
Standard:
Planetary drive/steer front axle with 15.78 to 1.0 ratio. Differential equipped with "limited
slip" feature. Driving effort is applied to wheel that has traction. Front axle mounted rigidly
to frame.
Calculated Performance:
Gear Travel Speeds (MPH) Gradeability* Drawbar Pull
1st 3 65 18,100 pounds
(8200kg)
2nd 5 36 10,600 pounds
(4800kg)
3rd 10 19 6,000 pounds (2700kg)
4th 18 10 3,200 pounds (1450kg)
*Calculated, wheels may spin in 1st or 2nd gear before these values are reached with 2-
wheel drive.
Rear Axle:
Standard 2-Wheel Drive:
Steering axle with 1½° oscillation in either direction.
Optional 4-Wheel Drive:
Planetary drive/steer axle with 24.98 to 1.0 ratio. Differential is not “limited slip” in rear axle.
1½° oscillation in either direction. (Axle ratio compatible with 4WD transmission rear output
ratio to match front axle speed.)
Steering:
Standard:
Hydraulic steering unit with two 3-inch (7.6cm) cylinders attached to each axle. Allows
limited steering when engine is not running. A switch on the control panel is used to select
rear-wheel steering or four-wheel (round) steering or crab steering.
Summary of Contents for IC-250
Page 6: ...1 2 IC 250 3E DIMENSIONS...
Page 7: ...1 3 IC 250 3E TURNING DIMENSIONS...
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Page 51: ...3 9 IC 250 3E LUBRICATION CHART...
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Page 68: ...3 26 BOOM CHAIN ADJUSTMENT...
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