It is common for the plastic accumulator piston to wear or crack and older aluminum piston bores to wear from repeated reciprocation. Use of a updated hardened spline sun shell helps prevent. Reconditioning the bore and installing Sonnax TCC regulator and isolator valve kit 77754-04K restores normal TCC operation by reestablishing the hydraulic integrity of this circuit.Ī chronic problem with both OE and thicker aftermarket shells is failure when splines continue to strip or the shells break under normal conditions. If this valve is not installed during the rebuild the transmission will exhibit diminishing line pressure, which can result in burnt clutches (transmission failure) and loss in TCC apply pressure and resulting in converter failure due to overheating.
Chevy silverado 4l60e shift kit code#
One indicator of this issue is the TCC-related slip code P1870. Sonnax TCC Regulator Valve #77754-04K/03K which requires a special reaming tool, that re-bores worn out aluminum 4L60E valve bodies which is an issue when time for a rebuild, and allows installation of this special high quality valve and sleeve, This problem is the NUMBER ONE most overlooked issue by other rebuilders. Updated TransGo Zinc Coated Separator Plate Late model 3/4 Clutch One Piece Apply Plate Master Rebuild Kit with all clutches and steels, name brand clutches such as Borg Warner or Raybestos TransTec Overhaul Kit – Rubber Seals, Metal Clad Seals, Sealing Rings, Paper Gaskets We ensure that all the current updates are performed, during reassembly each unit is ran through tests to ensure correct assembly and quality.
What this means to you is the fact you are getting a quality product that meets or exceeds the OEM standards, not just a part that is taken apart and “patched”. 4340 Billet Steel Pump Rotor and Slide Kit (Heat Treated)Īll of our transmissions are fully remanufactured and are held to the highest and strictest industry standards.Raybestos Blue Line Clutches and Kolene Steels.4L79 Heavy Duty/ HI-Performance Input Drum.
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8 Wide Clutch 3/4 Stack-Up with High Energy Wide 3/4 Frictions / Full Thickness Steels.Sonnax Input Drum Reinforcement Sleeve and Piston Kit.5 Pinion Front and Rear OEM GM (NOT AFTERMARKET) Planetary Carriers.Sonnax SmartShell, Heavy Duty Reaction Shell Kit.Late Model Dual Cage Borg Warner Front Sprag.Sonnax Teflon Coated Rear Stator Bushing.Billet Aluminum Forward Accumulator Piston.TransGo Unbreakable Hardened Pump Vane Ring Kit.TransGo 0.500″ Boost Valve Kit Installed.7 Clutch 3/4 Stack-Up with Raybestos GPZ High Energy 3/4 Frictions / Full Thickness Kolene Steels.
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