Symptoms:

  • Slips & flares
  • Delayed engagement
  • Shift quality is not load sensitive
  • Harsh shifts
  • Slide shifts
  • Slip codes
  • Burnt clutches

Cause:

Wear in clutch latch valve bores causes feedback pressure instability, preventing normal shift operation.

Correction:

Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized clutch latch valve.

6F35 (Gen. 1), 6F35 (Gen. 2)

Oversized Clutch Latch Valve
Part No. 144740-21

Works in any of 4 locations


You need this if... View Instructions Find a Distributor

Ford 6F35 Gen. 1 and Gen. 2 clutch latch valves provide feedback pressure to their respective clutch regulator valves, balancing the regulators to assist with apply and release of the associated clutch. Pressure control solenoid fluid acts on the valve to precisely control the amount of oil delivered to the balance end of the clutch regulator valve. Wear in the latch valve bores can result in harsh shifts, slipping, burnt clutches, flares and delayed engagement. Installing Sonnax oversized clutch latch valve 144740-21 after reconditioning the bore restores the hydraulic control necessary for trouble-free shifting.

Proper operation of clutch latch valves depends on correct pressure being supplied by shift solenoids. If trouble is found with pressure supply to these solenoids, Sonnax offers oversized solenoid regulator valve 144740A-01

  • Hardcoat anodized aluminum valve combat premature wear
  • Oversized valve engineered to perform to OE specification

This valve is compatible with four separate bores in Ford 6F35 units. In the solenoid body casting, the direct, intermediate and low-reverse-overdrive clutch latch valve bores; the main valve body casting houses the forward clutch latch valve bore.

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 Gen. 1 & 2 6F35 Valve Body Layout

Ford Gen. 1 & 2 6F35 Valve Body Layout
  • 6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Clutch Latch Valve 144740-21
  • 6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Clutch Latch Valve 144740-21

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.

6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Clutch Latch Valve Vacuum Test Locations
6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Clutch Latch Valve Vacuum Test Locations