AUTO TRANS DIAGNOSIS - 722 SERIES Article Text (p. 2) 1996 Mercedes-Benz C220 Copyright © 1998 Mitchell Repair Information Company, LLC Wednesday, January 26, 2000 12:03PM TRANSMISSION Transmissions are fully automatic 4 or 5-speed consisting ofa 3-element welded torque converter, 2 or 3 compound planetary gearsets, 2 or 3 multiple-disc clutches, one overrunning clutch and 3brake bands. See Figs. 1 and 2. Brake bands control function ofplanetary gear sets. A hydraulic system, pressurized by a primary geartype pump and a secondary piston type pump provide working pressurerequired to operate friction elements and automatic controls. 1st Gear In 1st gear, brake band B-2 is applied and one-way converterclutch is locked. In selector lever position "2", clutch K-2 is alsoengaged. Both planetary gear sets are involved in gear reduction. 2nd Gear In 2nd gear, brake band B-1 and brake band B-2 are applied.Both planetary gear sets are involved in gear reduction.