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Cnh Case Steyr 9000-Series Tractors Factory Service Manual

Cnh Case Steyr 9000-Series Tractors Factory Service Manual

CONTROL CIRCUIT TO THE MAIN CLUTCH FOR SHUTTLE OPERATION as well as starting with and without
the clutch pedal
General information
The software has 4 reversing characteristic curves for starting or reversing without the clutch pedal. Their pressure level depends on the gear selected in the 6-speed synchronized transmission (pressure level increases when a higher gear is selected), whereby the characteristic curves for the 1st and 2nd gear are almost identical. There is only one characteristic curve for the 5th and 6th gear.
If certain rotational speed signals fail, the A68 activates the proportional valve (Y3) according to a “default characteristic curve” whose pressure curve corresponds to the characteristic curve for the 5th and 6th gear. Cnh Case Steyr 9000-Series
Cnh Case Steyr 9000-Series Tractors Factory Service Manual

· If the clutch pedal is used to start, then activation of the proportional valve (Y3), and thus the main clutch, is not effected in
accordance with a characteristic curve but according to the current position of the clutch pedal.
Signal characteristic when “engaging the clutch without using the clutch pedal”
· The driver’s command to start or reverse is carried out by operating keys. This sends.

Cnh Case Steyr 9000-Series Tractors Factory Service Manual
Cnh Case Steyr 9000-Series Tractors Factory Service Manual
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Cnh Case Steyr 9000-Series Tractors Factory Service Manual

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