September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- TCC apply & release concerns
- Inadequate lubrication
- TCC codes
Cause:
A sticking lockup relay control sleeve prevents TCC apply or release. Sleeve wear reduces converter pressure, overheating the fluid and results in bushing and solenoid failure.Correction:
The tightly toleranced, drop-in replacement Sonnax lockup relay control valve kit restores proper hydraulic clearances, and uses upgraded materials to prevent wear.55-50SN, 55-51SN
Lockup Relay Control Valve Kit
Part No. 59947-01K
Also fits AF23/33 and RE5F22A units.
You need this if... View Instructions Find a DistributorAisin AW 55-50SN and AW-51SN transmissions can have TCC apply and release complaints, inadequate lubrication and TCC codes as a result of wear at the inside diameter of the lockup relay control sleeve due to continuous valve oscillation. This results in valuable converter feed pressure to flow directly to exhaust and prevents the relay control valve from properly positioning the inboard valve to control the flow of apply and release oil to the converter. Installing the Sonnax drop-in lockup relay control valve kit 59947-01K restores proper hydraulic control with a highly wear-resistant billet sleeve and hard-coat anodized aluminum valve.
- Sleeve is manufactured from highly wear-resistant billet aluminum.
- Hardcoat anodized aluminum valve combats premature wear
- Drop-in Zip Valve™ parts install quickly and easily
- Valve
- Sleeve
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.
Aisin AW 55-50SN, 55-51SN Valve Body Layout
December 22, 2014
The Art of the Silver Bullet
Tory Royce
December 22, 2014
