Refurbished (road tested) AISIN WARNER TF-81SC Gen1 (2WD) transmission - transmission number 31256205

Краткое описание базовых узлов трансмиссии.
 

Количество зубьев на косозубых шестернях:

• Шестерня дифференциала — 53 зуба;
• Промежуточный вал — 15 | 48 зубьев;
• Шестерня Drive Transfer Gear — 53 зуба | 72 зуба — кольцевая шестерня задней планетарной передачи;
   

Гидротрансформатор — 70A040
 

Гідроблок - Gen1
 

Complete Volvo TF-80SC Transmission Overhaul Process

To restore the reliability and smooth shifting of your Volvo’s 6-speed TF-80SC transmission, we perform a comprehensive internal rebuild. Our process targets the exact root causes of wear, delayed engagements, and rough shifting.

1. Internal Friction & Seal Replacement Over thousands of miles, internal wear components degrade, leading to slipping gears and hydraulic pressure loss.

• Friction Plates & Brake Band: We replace all worn friction plates and the brake band with high-quality components to restore full gripping and holding capacity for every gear.

• Rubber Pistons: We install brand-new rubber apply pistons to guarantee a perfect hydraulic seal, preventing the internal fluid leaks that cause shifting issues.

2. K1 Clutch & Teflon Ring Precision Adjustment A very common complaint with the TF-80SC is a noticeable, annoying delay when shifting from Neutral or Park into Drive.

• To eliminate this, we meticulously adjust the internal clearance of the K1 clutch pack and install upgraded Teflon sealing rings. This precise calibration significantly reduces engagement time, ensuring an immediate, smooth, and predictable shift into Drive.

3. Valve Body (Hydraulic Control) Repair The valve body is the complex hydraulic "brain" that directs fluid pressure to change gears.

• We fully disassemble, clean, and rebuild the valve body to correct sticking valves and pressure losses. This prevents harsh upshifts, heavy downshift "clunks," and erratic shifting behavior.

4. Torque Converter Rebuild The torque converter acts as the fluid connection between your Volvo's engine and the transmission.

• We fully rebuild the torque converter, replacing its internal lock-up clutch mechanism. This eliminates acceleration shudder, reduces internal heat, and restores optimal fuel efficiency and power delivery.

5. Real-World Road Testing & Quality Assurance A rebuild is not truly finished until it performs flawlessly under actual driving conditions.

• After the transmission is fully assembled, installed, and filled with premium transmission fluid, we take the vehicle for a rigorous road test. We monitor shift timing, engagement smoothness, and torque converter operation on the road to ensure your Volvo drives perfectly before the keys are handed back to you.