September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- Burnt clutches
- Delayed engagement
- Inadequate lubrication
- Low pressure
- Slips & flares
- Soft shifts
- TCC apply & release concerns
- TCC codes
Cause:
Loss of oil pressure due to worn components in critical oil circuits.Correction:
Zip Kit seals critical pressure losses. Drop-in parts install quickly and easily.A340E, A340F
Zip Kit®
Part No. A340-LATE-ZIP
Fits '00-later V6 and V8 units, type 3 & 4.
View Instructions Find a DistributorSonnax Zip Kit A340-LATE-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in the Toyota/Lexus A340E/F, Type 3 and 4 valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, accumulator, EPC and lockup control circuits. The kit also seals multiple circuits known to suffer from end plug leakage or poor checkball sealing. No special tools are required for installing these parts.
The Zip Kit quick guide provides clear and easy instructions on one sheet to get the unit sealed up and back on the road fast. In addition to general rebuilding tips and technical information, the technical booklet included in this kit contains vacuum testing information and locations at other key areas of the valve body.
- Drop-in Zip Valve™ parts install quickly and easily, no reaming or special tools required
- Uniquely designed parts address root causes of valve body complaints by sealing critical pressure circuits
- Detailed technical booklet included with in-depth rebuild and inspection tips for comprehensive valve body repair
Shims and EPC boost valves are selective, follow instructions given in quick guide.
- Lockup Relay Control Valve & Sleeve
- Dual Ratio Boost Valve Kit
- Extra O-Rings (6) 1 Extra Large, 2 Large, 2 Medium, 1 Small
- Accumulator Control Valve End Plug & O-Ring Extra-Large O-Ring
- Secondary Regulator Valve & Reverse Control Valve End Plugs & O-Rings 2 Each, Large O-Rings
- 1-2, 2-3 & 3-4 Shift Valves End Plugs & O-Rings 3 Each, Medium O-Rings
- 2nd Coast Modulator Valve End Plug & O-Ring Small O-Ring
- Checkballs (2) Large, .250" dia.
- Checkballs (9) Small, .218" dia.
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.
Toyota/Lexus A340, A340E/F/H Valve Body Layout
January 16, 2014
Toyota A340E/F Identification Guide
August 21, 2013
Toyota/Lexus A340E/F, '00-Later Vacuum Test Guide
March 07, 2014
Transmission Report: Top Repair Solutions for All Rebuild Levels
May 15, 2023
Positive Sealing: The Benefits of O-Ringed End Plugs
Maura Stafford
-
Patent
- 8,955,533
Videos
Zip Kit® Video - The First Step in Correcting Common Shift Problems
The Sonnax ZIP KIT®
The First Step in Correcting Common Shift Problems
It's easy to restore and extend vehicle shift quality with Zip Kits. Uniquely designed, drop-in Sonnax parts target the root cause of valve body complaints and stop critical circuit pressure losses in the most common problem areas of the transmission.
