September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- Excess TCC slip
- TCC apply & release concerns
- TCC cycling
- High TCC release pressure
Cause:
Wear at the TCC control valve sleeve and limited contact area at the outer large spool bore allows line pressure leakage, preventing the valve from staying in the applied position.Correction:
Sonnax drop-in TCC valve kit provides significantly more hydraulic sealing capability with enhanced designs, and prevent future wear with upgraded materials.A5GF1, A5HF1, F4A41/42/51, F5A51, R4/V4A51, R5A51, V5A51
TCC Control Valve Kit
Part No. 41954-03K
Replaces OE valves with .405", .531" & .344" spool dia. Application units noted may look different than the two valve bodies pictured here. 41954-03K should fit all units with matching spool diameters, even if location of bore differs.
You need this if... View Instructions Find a DistributorIn listed Hyundai/Kia and Mitsubishi units, wear at the TCC control valve sleeve and limited contact area at the outer spool bore allows line pressure leakage. This prevents the valve from staying in the applied position, leading to converter apply and release issues, excess slip RPM, TCC cycling and high TCC release pressure. Sonnax TCC control valve kit 41954-03K is a drop-in repair featuring an enhanced design and increased sealing capability to stop line pressure leakage and prevent future wear.
- Hardcoat anodized aluminum valve combats premature wear
- Highly wear-resistant alloy aluminum sleeve incorporates an O-ring to provide positive sealing against valuable line pressure leakage to exhaust
- Critical valve spools are lengthened by almost 15%
- More than 80% more sealing contact area at the outboard line port area during TCC apply, while the critical outside diameter of the sleeve provides more than twice as much sealing capacity
- Drop-in Zip Valve™ parts install quickly and easily
Fits '96-later front wheel drive units. However, OE valve spool diameters must be measured to verify application.
- Valve
- Sleeve
- O-Ring
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.
Mitsubishi F4A, F5A Valve Body Layout
You need this if...
Valve repair is needed if with gauge on DR pressure tap damper release pressure does not drop and remain at zero when in full TCC supply.
