Symptoms:

  • Delayed Forward
  • No Forward
  • Gear ratio & solenoid codes
  • Failsafe mode
  • Slipping gears
  • Burnt Forward clutch
  • Overheated fluid

Cause:

Bore wear at the forward clutch regulator valve allows critical pressure loss that prevents proper clutch operation.

Correction:

Recover hydraulic control and renew forward clutch performance by reconditioning the bore and installing Sonnax oversized forward clutch regulator valve kit.

6R140

Oversized Forward Clutch Regulator Valve Kit
Part No. 126740-13K


You need this if... View Instructions Find a Distributor

Forward clutches in Ford 6R140 transmissions are applied in first through fourth gears in conjunction with other clutches. As the forward clutch regulator valve oscillates and strokes over time, bore deterioration results, allowing pressure loss that prevents proper hydraulic control of the forward clutches. This can cause no or delayed Forward, slipping, fluid overheat, burnt clutches, ratio or solenoid codes and failsafe operation.

Reconditioning the bore and installing Sonnax oversized forward clutch regulator valve kit 126740-13K restores normal shift action and clutch control for revived forward operation.

  • New spring matches OE calibration
  • Hard-coat anodized aluminum valve combats premature wear
  • Valve
  • Spring
  • End Plug
  • O-Rings (2) 1 Extra

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Ford 6R140 Valve Body Layout

Ford 6R140 Valve Body Layout
  • 6R140 Oversized Forward Clutch Regulator Valve Kit 126740-13K
  • 6R140 Oversized Forward Clutch Regulator Valve Kit 126740-13K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

6R140 Oversized Forward Clutch Regulator Valve Kit Vacuum Test Locations