Oversized Priming Valve Kit
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WARNING: Cancer and Reproductive Harm
Product Details
Description
ZF valve name: DR-RED-V (DR-V)
Chrysler valve name: PR-V
In Chrysler 845RE and ZF8HP45/55/70 units, the variable force solenoids control clutch apply/release, torque converter clutch apply/release and line pressure. The priming valve ensures proper flow and pressure to the solenoids and is especially crucial during hot conditions and low pressure. Low solenoid feed pressure at idle can create delayed engagement or wrong gear starts. This priming valve also limits the maximum pressure to all the solenoids. Excessive solenoid feed pressure can flood the solenoids causing gear ratio codes, harsh up/down shifts and excessive line pressure. Reconditioning the bore and installing Sonnax oversized priming valve kit 35740-21K eliminates bore wear and stops leakage for proper solenoid pressure control.
- Hardcoat anodized valve combats premature wear
- Annular grooves help center the valve in the bore to resist wear
- Valve
- Spring
- End plug
- O-Rings (3) 1 Extra
- Reamer F-Tool Kit Part No. F-35740-TL20
Symptoms:
- Delayed engagement
- Wrong gear starts
- Flare shifts
- Gear ratio & solenoid codes
- Harsh shifts
- Neutral shifts
- Gear loss
Cause:
Bore wear at the priming valve allows pressure escape that causes drivability problems.Correction:
Stop pressure loss and restore normal solenoid feed pressures by reconditioning the bore and installing Sonnax oversized priming valve kit.