September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Required tool kit F-41954-TL is no longer in production. Check with your distributor for available inventory.
If wear in listed Hyundai/Kia and Mitsubishi transmissions occurs at the balance/inboard end, the valve will not stroke to reduce line pressure and reduces feed to the converter/lube circuits. This can result in high line pressure, harsh shifts, reduced converter pressure and loss of lube. Severe wear at the other pressure regulator valve circuits can allow line pressure to exhaust, resulting in low line pressure, soft shifts and burnt clutches and bands. Sonnax oversized pressure regulator valve 41954-01K restores the valve body to normal operating condition.
May be used in Mitsubishi front wheel drive, 96-later valve bodies including F4A41/42/51, F5A51 and Hyundai/Kia A5HF1 and A5GF1. However, OE valve spool diameters MUST be measured to verify application. This kit CANNOT be used in rear wheel or all wheel drive units.
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.
September 30, 2005
Gregg Nader