Symptoms:
- Delayed Forward
- Delayed Reverse
- Low line pressure
- High line pressure
- Pressure control out-of-range codes
- Burnt Forward clutch
- Burnt intermediate band
Cause:
Bore wear results in reduced feed pressure to overdrive, intermediate or low/reverse servos or the coast clutch.Correction:
Refurbish the valve bore and install the Sonnax oversized valve kit to restore proper hydraulic function and prevent future leakage. This Sonnax kit works in either modulator valve location.5R55N
Oversized PCA/PCB Modulator Valve Kit
Part No.56947J-49K
-
Tooling:
- F-56947J-TL49
- VB-FIX
You need this if... View Instructions 乐动ldsports
5R55N units commonly experience low line pressure and delayed engagements, typically resulting in pressure out-of-range codes, burnt forward clutches or intermediate bands. Bore wear at the VFS1 (PCA) and VFS2 (PCB) locations allows modulated line pressure to exhaust instead of feeding the overdrive, intermediate or low/reverse servos or the coast clutch, causing the complaints and damage. Install Sonnax PCA/PCB modulator valve kit 56947J-49K after refurbishing the bore to restore hydraulic control and optimum line pressure feed to affected circuits. Hard anodized material and annular grooves provide a long lasting repair that can beused in either location.
- Critical valve spools incorporate annular grooves for better hydraulic centering and reduced leakage and wear
- Works in either modulator valve location
- Valve
- Plug
- Spring
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 5R55N Valve Body Layout
