September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- Low line rise
- Low Reverse boost
- Soft shifts
- Maximum adapt
- Long shifts
- Converter shudder
- Overheated converter
- Code 741, 1811
- Falls out of lockup when hot
- No lockup
Correction:
The parts in this Sure Cure kit repair and restore key areas most prone to TCC-related transmission problems and other issues affecting shift quality.Warning:
A solid version, [84881], for 4T60 and 4T60E units with the brass orifice plug also is available. The correct style pin must be used or line pressure and pump performance will be adversely affected.
4T65-E
The Sure Cure® Kit
Part No. SC-4T65E
Enclosed pump slide pivot pin does not fit late-style, 3-piece pump.
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Tooling:
- 84754-TL3
- F-84596-TL
- VB-FIX
View Instructions Find a Distributor
Sonnax Sure Cure kit SC-4T65E, fully compatible with all GM 4T65-E units, is a comprehensive reconditioning package featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance. Sure Cure components are the same Sonnax parts sold individually to resolve common valve body complaints as well as other transmission problems. The high-quality Sonnax parts in each Sure Cure kit repair worn areas and protect the transmission against future damage. Plus, each kit comes with an easy-to-read, step-by-step installation guide that covers the inspection and repair of the most critical areas of the valve body
- Restore shift quality and reduce comebacks
- Repairs biggest trouble areas to reduce comebacks
- Includes step-by-step instructions for comprehensive valve/pump body restoration
- Get everything you need for restoring troublesome units in one place, at one cost
- Shim Input Clutch Hub .010"
- Shim Input Clutch Hub .020"
- Shim Differential Carrier-to-Case
- Pump Slide Pivot Pin
- TCC Relief Valve
- Differential Lube Tube Retainer Kit
- Boost Valve Kit
- TCC Apply Valve Kit
- AFL Valve Kit
- TCC Regulated Apply Valve Kit
- Checkballs (2) .375" Dia.
- Checkballs (8) .250" 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.
GM 4T65-E Valve Body Layout
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Patents
- 6,832,632
- 7,100,753
The Sure Cure®
Comprehensive Kit for Big Problems You Don't Want Back
Knowing exactly what parts to replace in troublesome transmissions is an ever-increasing challenge, but Sonnax Sure Cure kits solve this problem for you. Each kit is a comprehensive reconditioning package featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance.
Related Sonnax Parts
Required
Recommended
4T65-E
AFL Valve Kit 84596-02K
-
Helps cure:
- Erratic line pressure
- Maximum adapt
- Code 1811
- 2nd Gear starts
- Poor EPC control
- Long shifts
- TCC piston failure
Required
Recommended
3T40 (TH125C), 4T60, 4T60-E, 4T65-E
Differential Carrier-to-Case Shim 75410-10
- Material: Steel
- Thickness: 0.010"
- Inner Dia.: 1.445"
- Outer Dia.: 2.170"
-
Helps cure:
- Driveline noise
- Excess backlash
- Reduced differential bearing life
Required
Recommended
4T60-E, 4T65-E
Differential Lube Tube Retainer Kit 84532-01K
-
Helps cure:
- Differential lube failure
- Difficulty in retaining differential lube tube
Required
Recommended
Required
Recommended
Required
Recommended
Required
Recommended
4T65-E
TCC Relief Valve 84757-01K
Calibrated to prevent excessive apply pressure,
-
Helps cure:
- Repeated converter failure
- Overheating
- Low cooler flow
- TCC slip
- Loss of lube oil