Differences
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transmissions:722.3 [2022/11/14 03:11] – john5788 | transmissions:722.3 [2022/11/14 03:29] (current) – [Main Valve Body] john5788 | ||
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=== Disassembly === | === Disassembly === | ||
- | === Reassembly === | ||
- | === Installation === | ||
- | === K1 / K2 Accumulators | + | === Reassembly |
- | + | ||
- | The K1 and K2 accumulators are located inside of the lower valve body behind covers which are easily accessible with the transmission pan removed. | + | |
- | + | ||
- | \\ | + | |
< | < | ||
<col sm=" | <col sm=" | ||
- | |||
- | <panel type=" | ||
- | ^ Part number ^ Description ^ | ||
- | | 126 270 03 35 | K1 Accumulator Kit, spring and piston | | ||
- | | 126 270 44 77 | K1 Spring Kit, springs only, stiffer spring | | ||
- | | 126 270 04 35 | K2 Accumulator Kit, springs and piston, 21.60mm piston | | ||
- | | 126 270 05 35 | K2 Accumulator Kit, springs and piston, 19.80mm piston | | ||
- | </ | ||
</ | </ | ||
- | </ | ||
- | |||
- | == K1 Accumulator == | ||
- | |||
- | The K1 accumulator is in charge of shifts between 2 and 3. Usually to help with shifting problems, the springs can be replaced with stiffer ones that are ordered from a Mercedes-Benz dealer. | ||
- | |||
- | Part number **126 270 44 77** provides only the stiffer replacement springs which mean you will need to reuse the old piston and seals. Part number **126 270 03 35** will provide a new K1 accumulator piston, seals, as well as the original springs. It is recommended to order both kits and replace the springs from **126 270 03 35** with the stiffer springs from **126 270 44 77** for reinstalling into the valve body. | ||
- | |||
- | \\ | ||
- | |||
- | < | ||
<col sm=" | <col sm=" | ||
- | < | ||
- | {{ parts: | ||
- | < | ||
- | </ | ||
- | </ | ||
- | <col sm=" | ||
- | < | ||
- | {{ parts: | ||
- | < | ||
- | </ | ||
- | </ | ||
- | </ | ||
- | |||
- | = Procedure = | ||
< | < | ||
- | <col sm=" | ||
- | - Drain transmission fluid | ||
- | - Remove transmission oil pan | ||
- | - Locate K1 spring cover on valve body towards front of transmission | ||
- | - Loosen the bottom left or right flat-head screw and remove the other 3 | ||
- | - Rotate cover and remove spring and bore | ||
- | - Assemble new K1 spring into existing bore | ||
- | - Place smallest diameter spring over white plastic thrust pin | ||
- | - Place plastic thrust pin assembly inside one end of the largest coil spring | ||
- | - Place black cap on the other end of the largest coil spring | ||
- | - Compress the springs together until white thrust pin is inserted into black cap | ||
- | - Short large coil spring goes on top of black cap | ||
- | - Insert K1 spring and close cover | ||
- | </ | ||
<col sm=" | <col sm=" | ||
< | < | ||
- | {{ transmissions: | + | {{ transmissions: |
- | < | + | < |
</ | </ | ||
</ | </ | ||
- | </ | ||
- | |||
- | == K2 Accumulator == | ||
- | |||
- | The K2 spring kit can be purchased and used to replace an existing part to help alleviate shift flares between gears 3 and 4. The part number **126 270 04 35** or **126 270 05 35** can be used at a Mercedes-Benz dealer for ordering a replacement kit. **126 270 04 35** has a 21.6 mm piston lip diameter and **126 270 05 35** has a 19.8 mm piston lip diameter. Be sure to order the matching piston size for your valve body. | ||
- | |||
- | \\ | ||
- | In the EPC, these parts are listed for a 722.4 transmission, | ||
- | |||
- | = Procedure = | ||
- | < | ||
- | <col sm=" | ||
- | - Drain transmission fluid | ||
- | - Remove transmission oil pan | ||
- | - [[ transmissions: | ||
- | - Locate K2 spring cover on valve body towards rear of transmission | ||
- | - Loosen the bottom left or right flat-head screw and remove the other 3 | ||
- | - Rotate cover and remove spring and bore | ||
- | - Insert new K2 spring and bore | ||
- | - Close cover | ||
- | </ | ||
- | <col sm=" | ||
- | < | ||
<col sm=" | <col sm=" | ||
< | < | ||
- | {{ transmissions: | + | {{ transmissions: |
- | < | + | < |
</ | </ | ||
</ | </ | ||
<col sm=" | <col sm=" | ||
< | < | ||
- | {{ transmissions: | + | {{ transmissions: |
- | < | + | < |
- | </ | + | |
- | </ | + | |
- | <col sm=" | + | |
- | < | + | |
- | {{ parts: | + | |
- | < | + | |
</ | </ | ||
</ | </ | ||
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</ | </ | ||
- | == B1 Accumulator | + | |
+ | === Installation === | ||
==== Secondary Valve Body ==== | ==== Secondary Valve Body ==== | ||
Line 610: | Line 529: | ||
- Remove bracket and detent leaf spring, 1x 10mm hex bolt | - Remove bracket and detent leaf spring, 1x 10mm hex bolt | ||
- Remove bolts securing lower cover to transmission case, 9x 10mm hex bolts | - Remove bolts securing lower cover to transmission case, 9x 10mm hex bolts | ||
- | - Pull lower cover along with large intermediate plate away from transmission | + | - Pull secondary valve body along with large intermediate plate away from transmission |
- Oil deflector piece may fall out from front side of transmission after intermediate plate is removed | - Oil deflector piece may fall out from front side of transmission after intermediate plate is removed | ||
</ | </ | ||
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< | < | ||
{{ transmissions: | {{ transmissions: | ||
- | < | + | < |
</ | </ | ||
</ | </ | ||
Line 654: | Line 573: | ||
{{ transmissions: | {{ transmissions: | ||
< | < | ||
+ | </ | ||
+ | </ | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ transmissions: | ||
+ | < | ||
</ | </ | ||
</ | </ | ||
Line 698: | Line 623: | ||
+ | ==== K1 / K2 Accumulators ==== | ||
+ | |||
+ | The K1 and K2 accumulators are located inside of the lower valve body behind covers which are easily accessible with the transmission pan removed. | ||
+ | |||
+ | \\ | ||
+ | |||
+ | < | ||
+ | <col sm=" | ||
+ | |||
+ | <panel type=" | ||
+ | ^ Part number ^ Description ^ | ||
+ | | 126 270 03 35 | K1 Accumulator Kit, spring and piston | | ||
+ | | 126 270 44 77 | K1 Spring Kit, springs only, stiffer spring | | ||
+ | | 126 270 04 35 | K2 Accumulator Kit, springs and piston, 21.60mm piston | | ||
+ | | 126 270 05 35 | K2 Accumulator Kit, springs and piston, 19.80mm piston | | ||
+ | </ | ||
+ | |||
+ | </ | ||
+ | </ | ||
+ | |||
+ | === K1 Accumulator === | ||
+ | |||
+ | The K1 accumulator is in charge of shifts between 2 and 3. Usually to help with shifting problems, the springs can be replaced with stiffer ones that are ordered from a Mercedes-Benz dealer. | ||
+ | |||
+ | Part number **126 270 44 77** provides only the stiffer replacement springs which mean you will need to reuse the old piston and seals. Part number **126 270 03 35** will provide a new K1 accumulator piston, seals, as well as the original springs. It is recommended to order both kits and replace the springs from **126 270 03 35** with the stiffer springs from **126 270 44 77** for reinstalling into the valve body. | ||
+ | |||
+ | \\ | ||
+ | |||
+ | < | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ parts: | ||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ parts: | ||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | </ | ||
+ | |||
+ | == Procedure == | ||
+ | < | ||
+ | <col sm=" | ||
+ | - Drain transmission fluid | ||
+ | - Remove transmission oil pan | ||
+ | - Locate K1 spring cover on valve body towards front of transmission | ||
+ | - Loosen the bottom left or right flat-head screw and remove the other 3 | ||
+ | - Rotate cover and remove spring and bore | ||
+ | - Assemble new K1 spring into existing bore | ||
+ | - Place smallest diameter spring over white plastic thrust pin | ||
+ | - Place plastic thrust pin assembly inside one end of the largest coil spring | ||
+ | - Place black cap on the other end of the largest coil spring | ||
+ | - Compress the springs together until white thrust pin is inserted into black cap | ||
+ | - Short large coil spring goes on top of black cap | ||
+ | - Insert K1 spring and close cover | ||
+ | </ | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ transmissions: | ||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | </ | ||
+ | |||
+ | === K2 Accumulator === | ||
+ | |||
+ | The K2 spring kit can be purchased and used to replace an existing part to help alleviate shift flares between gears 3 and 4. The part number **126 270 04 35** or **126 270 05 35** can be used at a Mercedes-Benz dealer for ordering a replacement kit. **126 270 04 35** has a 21.6 mm piston lip diameter and **126 270 05 35** has a 19.8 mm piston lip diameter. Be sure to order the matching piston size for your valve body. | ||
+ | |||
+ | \\ | ||
+ | In the EPC, these parts are listed for a 722.4 transmission, | ||
+ | |||
+ | == Procedure == | ||
+ | < | ||
+ | <col sm=" | ||
+ | - Drain transmission fluid | ||
+ | - Remove transmission oil pan | ||
+ | - [[ transmissions: | ||
+ | - Locate K2 spring cover on valve body towards rear of transmission | ||
+ | - Loosen the bottom left or right flat-head screw and remove the other 3 | ||
+ | - Rotate cover and remove spring and bore | ||
+ | - Insert new K2 spring and bore | ||
+ | - Close cover | ||
+ | </ | ||
+ | <col sm=" | ||
+ | < | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ transmissions: | ||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ transmissions: | ||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | <col sm=" | ||
+ | < | ||
+ | {{ parts: | ||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | </ | ||
+ | </ | ||
+ | </ | ||
+ | === B1 Accumulator === | ||
===== Kickdown Solenoid ===== | ===== Kickdown Solenoid ===== |