Transmission Parts Ford 6R140 Valve Body Valve / Sleeve

Symptoms:

Low line pressure
Burnt Low/Reverse clutch
Delayed Reverse

Cause:

Bore wear at the low/reverse valve allows for critical pressure loss and results in continuous low line pressure.

Correction:

Restore line pressure and valve body performance by reconditioning the bore and installing Sonnax oversized low/reverse regulator valve kit.

6R140

Oversized Low/Reverse Regulator Valve Kit
Part No. 126740-27K

Tooling:

F-126740-TL27
VB-FIX

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The low/reverse clutches in Ford 6R140 transmissions are applied in Park, Neutral, Manual 1st and Reverse Gears. As the low/reverse regulator valve oscillates and strokes over time it results in bore deterioration, allowing pressure loss that prevents proper hydraulic control. This can cause delayed Reverse, burnt low/reverse clutch and/or low line pressure.

Reconditioning the bore and installing Sonnax oversized low/reverse regulator valve kit 126740-27K restores normal operation and clutch control for revived operation. The incorporation of annular grooves on the valve spools center the valve in the bore and the O-ringed end plug provides a positive seal and prevents critical signal fluid from leaking to exhaust.

New spring matches OE calibration
O-Ringed end plug provides a positive seal to prevent critical line pressure from exhausting from the circuit
Hardcoat anodized aluminum valve combats premature wear
Annular grooves help center the valve in the bore to reduce future side-load wear

Contents

Valve
Spring
End Plug
O-Rings (2) 1 Extra

Valve Body Layout

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.