🔧700R4 Transmission Overhaul Part - 1 | Full Rebuild скачать в хорошем качестве

🔧700R4 Transmission Overhaul Part - 1 | Full Rebuild

*700R4 Transmission Teardown - Part 1* *Introduction:* This is a summary of a 700R4 transmission teardown video (Part 1) by experienced mechanic Hiram. *Main Points:* *Detailed Disassembly:* The video shows the step-by-step process of disassembling a 700R4, emphasizing proper removal techniques. *Component Inspection:* Hiram inspects parts for wear and damage, including bushings, rings, and gears. *Common Issues:* The video highlights issues such as *water contamination* (causing friction linings to debond), cracked housings, and worn components. *Upgrades:* Planned upgrades include a sonnex bushing for the rear planet sun gear and a corvette servo. *Tools:* The video shows tools like screwdrivers, pliers, sockets, impacts, and picks. *Key Steps and Observations:* *Governor:* Cover removed by tapping with a screwdriver. Valve checked for free movement; tapping frees a stuck valve. Governor gear will be replaced, valve polished. *Speed Sensor & Extension Housing:* Speed sensor removed with 15mm wrench and 10mm bolt. Extension housing seal is a "square or leaf lathe cut seal". **The extension housing was cracked**. No-hole yokes are recommended over yokes with breathers. *Pan Removal:* Pan held by 10mm and 13mm bolts. **A missing check ball was found**. Water damage and burned clutches were noted. *Governor & Throttle Valve:* Governor works by speed, throttle valve by pedal, together determining shift points. *Accumulator & Valve Body:* A B&M shift kit blocks the accumulator with a tube and uses a double accumulator. Accumulator seals are crucial. Accumulator pinholes shouldn't be worn. Valve body may need a check ball based on spacer plate. *Center Support:* Center bolt with washer holds a harness. Center support snap ring is removed. Output shaft removed; noting two seals. *Pump:* Pump removed with a screwdriver. Stator tube/bushings checked for "ring cut". 10-vane rotor with expander ring (4L60s have 13). Vanes checked for wear. Rotor guide checked for cracks. **Front seal bushing was worn**. Flywheel checked for warpage and dial pins. *Water Damage:* Water causes friction linings to debond. *Reverse Drum:* Inspected for warping ('blossoming'). Frictions removed, cannot be reused. Large hole noted. Input shaft bearing and numbered spacers removed. *Sprag & Planetaries:* Double cage sprag is more heavy-duty than single sprag. Forward planet inspected; whole planet must be replaced if the bearing is bad. Rear planet had water evidence, still usable. Pinions checked for wobble. *Output Shaft & Center Support:* Anti-clunk spring removed from center support. *Servo:* Snap ring removed with screwdriver. O-ring stretched for removal. Corvette servo upgrade is recommended for trucks. *Case:* Case snap ring removed with pliers. Air compressor used to remove output shaft. *Additional Notes:* "Ring cut" refers to wear on the stator tube. Upgrades needed: rear sun gear bushing, servo. Magnet is important to prevent losing parts. *Conclusion:* This video provides a detailed look into the 700R4 transmission disassembly process, highlighting components and potential issues. Upgrades are needed due to wear and water damage. Rebuilding will be covered in the next video. #700R4, #transmission, #rebuild, #auto #repair, #DIY, #mechanic, , #autorepair