Transmission Parts Toyota/Lexus U760E U760F Valve Body Valve / Sleeve

Symptoms:

1-2 Long slide
B1 Clutches burned
Clutch failure
Low line pressure

Cause:

Wear at the B1 apply control valve or boost valve/sleeve can cause improper function of the B1 apply control valve, leading to incorrect clutch pressure. Line pressure acts in multiple locations at this valve, so excessive wear can lower line pressure.

Correction:

Recondition the bore and installing Sonnax oversized B1 apply control valve kit reduces line pressure losses and restores proper function of the B1 apply control valve, restoring proper clutch pressure.

U760E, U760F

Oversized B1 Apply Control Valve Kit
Part No. 47740-44K

Tooling:

F-47740-TL44
VB-FIX

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In Toyota/Lexus U760E/F transmissions, the B1 brake clutch is applied in 2nd and 6th Gears. The B1 apply control valve redirects line pressure to the brake clutch. Wear at the valve and/or boost valve and sleeve can cause improper valve function, and in extreme cases, reduction in line pressure. Reconditioning the bore and installing Sonnax oversized B1 apply control valve kit 47740-44K will control line pressure losses and restore valve function.

Sleeve manufactured from highly wear-resistant aluminum
Hardcoat anodized aluminum valves combat premature wear
Annular grooves help center valve to reduce side-load wear
Properly calibrated spring to match OE pressures

Contents

B1 Apply Control Valve
Spring
Boost Valve
Boost Sleeve

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.