September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- No lockup
- TCC apply & release concerns
- Delayed lockup
- Burnt converter
- Inadequate lubrication
Cause:
Worn and/or sticking lockup relay and control valves can prevent full TCC apply or release, which can create multiple TCC symptoms.Correction:
Ream the bore and install Sonnax oversized lockup relay valve kit to restore hydraulic control of the TCC circuit.55-50SN,55-51SN
Oversized Lockup Relay Valve Kit
Part No.59947-77K
Also fits AF23/33 and RE5F22A.
-
Tooling:
- F-97741-TL20
- VB-FIX
You need this if... View Instructions Find a Distributor
Vehicles equipped with Aisin AW 55-50SN and 55-51SN transmissions often exhibit several common concerns related to wear in the lockup relay valve bore. Oscillation of the lockup relay valve and stroking of the lockup control relay valve in its sleeve results in wear, which creates a loss of hydraulic control of the lockup circuit. Various TCC apply/release related concerns develop in these cases. Sonnax oversized lockup relay valve kit 59947-77K allows the bore to be refurbished, restoring normal TCC operation.
- Sleeve is manufactured from highly wear-resistant aluminum
- Hardcoat anodized aluminum valves combat premature wear
- Control Valve
- Lockup Relay Valve
- Control 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.看到所有Sonnax阀体outs.
Aisin AW 55-50SN, 55-51SN Valve Body Layout
December 22, 2014
