Product Description
5R55S 5R55W Reverse Engagement Valve Kit
Sonnax Part Number: 56947J-29K
TOOLING REQUIRED
- F-27741-TL13
- VB-FIX
In Ford 5R55S and 5R55W units, Reverse pressure from the manual valve is routed through the Reverse engagement valve prior to applying the direct clutch. Excessive wear at the valve bore can prevent solenoid feed oil pressure from correctly positioning the engagement valve, allowing reverse pressure to be reduced. Low Reverse pressure can result in slipping or loss of Reverse, burned direct clutches or delayed Reverse engagement.
- Sleeve manufactured from highly wear-resistant aluminum incorporates the end plug to prevent instability and wear, and provides more sleeve/valve contact for better hydraulic sealing
- Anodized aluminum valve incorporates annular grooves to hydraulically center valve and combat premature wear
- Tool kit can also be used in for 27741-13K, 56947J-23K, [56947J-56K] and 56947J-59K
PACKAGE CONTAINS
- Valve
- Sleeve
- Spring
SYMPTOMS
- Delayed Reverse
- No Reverse
- Slipping gears
- Direct clutch burned
CAUSE
Wear at the Reverse engagement valve bore can prevent proper valve positioning, allowing Reverse pressure, which applies the direct clutch, to be reduced.
CORRECTION
Refurbish the valve bore and install Sonnax Reverse engagement valve kit to restore proper hydraulic function and prevent future wear.
