Technical modifications Automatic transmission 722.3 I 09/88 - RA2703722TA00X

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Designation	Type and reason for change	Introduced	Op. No.
Upshift delay	No-throttle upshift 2 - 3 retarded so that catalytic converter can reach operating temperature more quickly.	04/89	27-115
Transmission housing, vehicles with 8-cylinder engines	Enlarged feed B1 (cross-section change in oil distributor plate.	04/89	27-430 27-640
Transmission housing	Oil pipe to governor lubrication omitted, except vehicles with 4MATIC	04/89 Phased in on trans. no. 3 234 346	27-640
Pressure converter and 50°C switch 722.357 omitted (Turbo)	Memory springs used in shift valve housing, valves (38) and (47) to improve 1-2 shift. 50°C switch also omitted.	09/89 Trans. no. 3 223 000	27-400
Thrust member B2	Spring force increased (320 Nm), improved H-3 downshift.	10/89 Trans. no. 3 305 965 M117/119 Trans no. 3 307 060 other transmissions	27-640
Brake band B2 with Raybestos	Used to improve shift quality	10/89	27-640
Cable control	Solenoid valve replaced by cable so that TWC heats up faster, except with M103.	06/91	27-115
Secondary pump	Secondary pump and accompanying valves and sliders no longer fitted.	06/91	27-530
Primary pump	Use of primary pump with reinforced housing.	08/91	27-530 27-630
Feed B1	Cross-section of feed B1 in oil distributor plate enlarged for improved 3-2/4-2 downshift.	08/91	27-640
Damper, regulating valve	Damper, regulating valve no function.	02/92 Trans. no 3 447 000	27-400
Disk spring LB3	Additional plastic washer for disk spring LB3 to prevent breakage of reverse gear plunger and increased wear.	04/92 Trans. no 3 716 425	27-640
Cut-in damper "R"	Cut-in damper at "R" no function, large intermediate plate modified. Also ball 14a (figure P27-5340-57) omitted.	06/92 Trans. no 3 747 000	27-400
Brake band plunger B1	Use of self-adjusting plunger B1	06/92 Trans. no. 3 746 852	27-640
Modulating pressure unit	Use of modified vacuum unit for modulating pressure adjustment.	08/92	27-350 27-640
Transmission air-oil cooler	Transmission oil-air cooler omitted in all vehicles with 8-cylinder engines except 124.034.	06/93	27-550
Control pressure cable with vacuum actuator	Introduction of control pressure cable with 2 vacuum actuators in plastic housing	Phased in as of 07/93	27-115
Brake band plunger B2	Use of improved molded T-ring for brake band plunger B2	09/93 Trans. no. 3 915 083	27-640
Transmission tuning	For improved shifting quality in the partial-load range, a modified modulating pressure valve is fitted.	09/93 Model 129.076 140.056/057 140.076 Trans. no. 3 917 454	27-001
Disk spring plunger B1	Disk spring plunger B1 stroke altered.	10/93 Trans. no. 3 931 462	27-640
Brake band plunger B1	Use of Teflon sealing ring with three oil grooves in brake band plunger B1.	03/94 Trans. no. 3 969 173	27-640
Disk spring LB3	Use of modified disk spring LB3 with increased stroke.	03/94 Trans. no. 3 991 611	27-640
Small intermediate plate	Use of modified small intermediate plate, and plastic valve in shift valve housing omitted, to improve cut-in at "D".	3/94 Model 124/129/140 M104 E32 Trans. no. 3 979 844 Model 124/140 M119 E42 Trans. no. 3 973 740 Model 124/129/140 M119 E50 Trans. no. 3 983 224 Model 129/140 M120 E60 Trans. no. 3 990 454	27-400
Supporting ring clutch K2	Use of an axial bearing and omission of supporting ring K2	08/94	27-640
Shift rod	Use of shift rods with stepless adjustment	06/95 Model 210	27-120