December 30, 2013
Symptoms:
- Delayed engagement
- Low line rise & long shift duration
- Flare shifts
- Shift codes
Cause:
Bore wear reduces available pressure to both the pMod and pS control solenoids. Low pressure at these solenoids will reduce line boost and clutch feed pressure.Correction:
Oversize the bore and install Sonnax oversized regulating valve pressure control valve and calibrated spring to re-establish hydraulic integrity.722.6
Oversized Regulating Valve Pressure Control Valve Kit
Part No. 68942-17K
Fits early and late units.
-
Tooling:
- F-68942-TL14
- VB-FIX
You need this if... View Instructions Find a Distributor
In Mercedes 722.6 units, severe wear of the regulating valve pressure control valve bore results in shift quality and solenoid control issures. Sonnax oversized regulating valve pressure control valve kit 68942-17K salvages these valve bodies.
- Hardcoat anodized aluminum combats premature wear
- Replaces both early and late designs
- A new spring is included to allow proper calibration
- Valve
- Spring
- Plugs (2) .062"
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.
Mercedes 722.6 Valve Body Layout
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.
