Product Description
A4LD C4 Oversized Modulator Valve Kit
Sonnax Part Number: 56833-01K
TOOLING REQUIRED
- 56833-TL (NO LONGER IN PRODUCTION)
WARNING: REQUIRED TOOL KIT 56833-TL IS NO LONGER IN PRODUCTION
NOTE: A MODULATOR WITH AN ADJUSTMENT SCREW MUST BE USED WITH THIS OVERSIZED VALVE
In Ford A4LD and C3 units, the continuous oscillation of the modulator valve wears the case bore, allowing oil circuit leakage. Line pressure and modulated TV pressure can cross leak or go to exhaust, resulting in uncontrollable shift timing, delayed egagements, harsh or slide shifts, poor line rise, and/or no TV control. Sonnax offers an oversized modulator valve kit 56833-01K that restores thehydraulic integrity of the circuits. Reamer kit 56833-TL must be used to accommodate the oversized valve.
- Hardcoat anodized aluminum valve combats premature wear
- A longer modulator adjustment screw is included to properly preload the modulator spring and compensate for the oversized valve
PACKAGE CONTAINS
- Valve
- Adjustment Screw
SYMPTOMS
- Harsh shifts
- Uncontrollable shift timing
- Slide shifts
- Delayed engagement
- No TV control
- Low line rise
- Worn cases
CAUSE
The continuous oscillation of the modulator valve wears the case bore, allowing oil circuit leakage.
CORRECTION
Sonnax oversized modulator valve kit re-establishes the integrity of the circuit, preventing oil circuit leakage.
