Printpartsummary
Symptoms:
  • Downshift clunk
  • Flare shifts
  • Harsh shifts
  • Shift concerns
Cause:

Springs break or fatigue from continuous cycling.

Correction:

Restore proper shift control due to fatigued or broken springs by installing Sonnax clutch control valve springs.

AS68RC

Clutch Control Valve Spring

Part No.

99740B-01

Clutch Control Valve Spring
  • 99740b-01_combo

  • Clutch Control Valve Spring

  • 99740b-01_vb-id1

Small_99740b-01_combo Small_99740b-01 Small_99740b-01_vb-id1

AS68RC

Clutch Control Valve Spring

Part No. 99740B-01

Package Quantity: 2

Fits Mitsubishi and Isuzu only. See valve body identification information.

Complaint:

  • Downshift clunk
  • Flare shifts
  • Harsh shifts
  • Shift concerns

Cause:

Springs break or fatigue from continuous cycling.


Correction:

Restore proper shift control due to fatigued or broken springs by installing Sonnax clutch control valve springs.

Vehicles equipped with an AS68RC transmission utilize two clutch control valve line-ups to control the application of the various clutches and brakes required for smooth gear changes. In Mitsubishi and Isuzu versions, a spring is used in conjunction with the clutch control plunger valve to aid in control of the clutch control valve. This spring is subject to fatigue and breakage, which can lead to a variety of shift complaints as the two clutch control valves stroke to apply and release the various clutches and brakes.

AS68RC cores are expensive and hard to come by, and there are no OE or aftermarket replacement options available. Replace broken or fatigued springs with Sonnax clutch control valve spring 99740B-01 to restore valve control and shift operation. The spring's unique design reduces stress and prolongs cycle life.

Related Parts

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