A rebuilt transmission involves disassembling the entire unit and replacing worn or damaged components with new or refurbished parts. This process restores the transmission to its optimal working condition.

Before reaping the benefits of a like-new transmission, you need to grasp what the process entails. Read on to learn the parts a rebuilt automatic transmission contains.

Gaskets and Seals

Gaskets and seals form the backbone of a rebuilt transmission. These components ensure the containment of the transmission fluid to prevent threatening leaks. New gaskets and seals replace old and worn-out ones to maintain a tight seal and efficient operation.

Valve Body and Solenoids

To properly regulate transmission fluid flow, rebuilt transmissions need a new valve body and solenoids. The valve body houses various channels and passages that direct fluid to different transmission parts.

Solenoids are electrically controlled valves that manage the fluid flow based on signals from the transmission control unit. Rebuilding this section involves cleaning, inspecting, and replacing damaged components.

Clutch Packs and Bands

Clutch packs and bands are vital for the transmission's ability to shift gears smoothly. Clutch packs consist of multiple friction plates and steel plates that engage and disengage to shift gears.

Bands wrap around the drum and tighten or loosen to control gear changes. During a rebuild, technicians replace worn friction materials and provide proper alignment and tension.

Gears and Shafts

Gears and shafts convey power from the engine to the drive wheels. Rebuilding involves inspecting these components for wear, cracks, or other damage. Technicians may replace or refurbish gears and shafts to increase power transmission.

Fluid Pump and Filter

A rebuild involves replacing the pump and filter for efficient fluid flow. The pump ensures fluid flows through the system, lubricating and cooling components. The filter removes contaminants that could damage the transmission.

Torque Converter

An essential component that a rebuilt automatic transmission must contain is a new torque converter. Unlike other parts that are easy to clean and refresh, you have to replace this part.

The torque converter links the engine and the transmission so that the vehicle can idle without stalling. It facilitates smooth power delivery and efficient engine performance.

Inside the torque converter, the turbine, stator, and impeller collaborate to transfer power from the engine to the transmission. The engine drives the impeller, pushes transmission fluid onto the turbine blades, and forces the turbine to spin to drive the transmission.

Transmission Case

The protection of all these elements is essential. The transmission case is the final piece required to complete a transmission rebuild.

The technician will closely inspect and clean the transmission case. It traditionally consists of cast iron, so it’s exceptionally durable. However, if it’s worn beyond repair, they’ll replace the part because any imperfections will hinder the vehicle’s lifespan and performance.

Automatic transmission repair kits are fundamental for a precise transmission rebuild. To make this project easier, Transparts Warehouse carefully creates transmission rebuild kits.

You can select aftermarket equipment based on vehicle make and model to ensure the best fit. Search our website to find the rebuild kit that will reinvigorate your vehicle!