Differences

This shows you the differences between two versions of the page.

--- transmissions:722.3 [2022/11/14 02:38] – john5788
+++ transmissions:722.3 [2022/11/14 03:29] (current) – [Main Valve Body] john5788
@@ Line 209: / Line 209: @@
 </grid>
-===== 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.
-\\
-<grid>
-<col sm="6">
-<panel type="default" title="Valve body springs" no-body="true">
-^ 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 |
-</panel>
-</col>
-</grid>
@@ Line 465: / Line 446: @@
 === Removal ===
 <grid>
@@ Line 484: / Line 464: @@
 <caption>Main valve body removed on the bench</caption>
 </thumbnail>
+</col>
+</grid>
+=== Disassembly ===
+=== Reassembly ===
+<grid>
+<col sm="6">
+</col>
+<col sm="6">
+<grid>
+<col sm="6">
+<thumbnail>
+{{ transmissions:7223_upper_valve_body_check_balls.jpg?300 }}
+<caption>Upper valve body check balls</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ transmissions:7223_upper_valve_body_springs_valves.jpg?300 }}
+<caption>Upper valve body springs and valves</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ transmissions:7223_lower_valve_body_valves.jpg?300 }}
+<caption>Lower valve body valves</caption>
+</thumbnail>
+</col>
+</grid>
 </col>
 </grid>
@@ Line 512: / Line 526: @@
 <grid>
 <col sm="6">
-  - Remove shift valve housing
+  - Remove main valve body housing
   - Remove bracket and detent leaf spring, 1x 10mm hex bolt
   - 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
 </col>
@@ Line 522: / Line 536: @@
 <thumbnail>
 {{ transmissions:7223lowercoverintermediateplate.jpg?300 }}
-<caption>Lower cover and intermediate plate</caption>
+<caption>Secondary valve body and intermediate plate</caption>
 </thumbnail>
 </col>
@@ Line 546: / Line 560: @@
 <thumbnail>
 {{ transmissions:7223lowercover.jpg?300 }}
-<caption>Lower cover</caption>
+<caption>Secondary Valve Body</caption>
 </thumbnail>
 </col>
@@ Line 552: / Line 566: @@
 <thumbnail>
 {{ transmissions:7223lowercovergasketaligned.jpg?300 }}
-<caption>Lower cover gasket aligned</caption>
+<caption>Secondary valve body gasket aligned</caption>
 </thumbnail>
 </col>
@@ Line 559: / Line 573: @@
 {{ transmissions:7223intermediateplateandgasketinstalled.jpg?300 }}
 <caption>Intermediate plate and gasket installed</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ transmissions:7223_reverse_lockout.jpg?300 }}
+<caption>Removing reverse lockout plunger</caption>
 </thumbnail>
 </col>
@@ Line 571: / Line 591: @@
   - Clean transmission case of any pieces of the old gasket
   - Install oil deflector if it was removed
-  - Mount lower cover with intermediate plate against transmission case while aligning oil pipe
+  - Mount secondary valve body with intermediate plate against transmission case while aligning oil pipe
   - Secure bolts holding lower cover to transmission case, 9x 10mm hex bolts, torque to 8 Nm
   - Mount detent leaf spring and bracket
@@ Line 584: / Line 604: @@
 </grid>
-==== K1 Accumulator ====
+=== Screen filters ===
+Some valve bodies are equipped with 2 small screen filters which can become clogged and cause shifting problems.
+<grid>
+<col sm="6">
+<thumbnail>
+{{ parts:1402700298.jpg?500 }}
+<caption>140 270 02 98 - Screen filters</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ transmissions:7223_valvebody_cloggedfilters.jpg?500 }}
+<caption>Clogged screen filters</caption>
+</thumbnail>
+</col>
+</grid>
+==== 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.
+\\
+<grid>
+<col sm="6">
+<panel type="default" title="Valve body springs" no-body="true">
+^ 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 |
+</panel>
+</col>
+</grid>
+=== 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.
@@ Line 607: / Line 666: @@
 </grid>
-=== Procedure ===
+== Procedure ==
 <grid>
 <col sm="6">
@@ Line 631: / Line 690: @@
 </grid>
-==== K2 Accumulator ====
+=== 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.
@@ Line 638: / Line 697: @@
 In the EPC, these parts are listed for a 722.4 transmission, but they seem to be functional for 722.3 transmissions.
-=== Procedure ===
+== Procedure ==
 <grid>
 <col sm="6">
@@ Line 674: / Line 733: @@
 </grid>
-==== B1 Accumulator ====
+=== B1 Accumulator ===
 ===== Kickdown Solenoid =====