41TE & 62TE Automatic Transmission Workshop Service Manual

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country DESCRIPTION DESCRIPTION Fig. 1: 62TE Transmission Courtesy of CHRYSLER LLC The planetary gear train for the 62TE transaxle provides six forward gear ratios, including two fourth gear ratios. One reverse gear ratio is also provided. Underdrive (UD) Compounder Assembly  Low Clutch (LC)  Direct Clutch (DC) 1 - Underdrive Clutch (UD) 6 - Overrunning Clutch (ORC) 2 - Overdrive Clutch (OD) 7 - Low Clutch (LC) 3 - Reverse Clutch (R) 8 - Direct Clutch (DC) 4 - 2/4 Clutch 9 - Planetary Gear Set 5 - L/R Clutch 10 - Remote Pinion Gear

 Overrunning Clutch (ORC)  Planetary gear set Fore-Mounted Valve Body/Solenoid/Pressure Switch Assembly  DC solenoid  LC solenoid  DC pressure switch  LC pressure switch  Torque Converter Clutch (TC) and pressure control Solenoids  Line Pressure Sensor (LPS)  An additional (third) speed sensor  A "squashed," or flatter, torque converter  A flatter oil pump  A new cover for valve body access  23-way connector for the Solenoid/Pressure Switch Assembly  Redesigned transfer gears with an oil scavenger  A remote pinion gear  A 2-piece, closed differential case with structural clamshell housing. The addition of the underdrive compounder assembly components improves low-end torque multiplication, enhancing low-end power capability. TRANSAXLE IDENTIFICATION

Fig. 2: Case Stamp & Bar Code Label Location Courtesy of CHRYSLER LLC The 62TE transaxle is identified by a barcode label (1) that is fixed to the transaxle or the "PK" number (2). Fig. 3: Identification Label Breakdown Courtesy of CHRYSLER LLC The label contains a series of digits that can be translated into useful information such as transaxle part number, date of manufacture, manufacturing origin, plant shift number, build sequence number, etc. Refer to for identification label breakdown. If the tag is not legible or missing, the "PK" number, which is stamped into the transaxle case behind the transfer gear cover, can be referred to for identification. This number differs slightly in that it contains the entire 1 - T=TRACEABILITY 2 - SUPPLIER CODE (PK=KOKOMO) 3 - COMPONENT CODE (TK=KOKOMO TRANSMISSION) 4 - BUILD DAY (344=DEC. 9) 5 - BUILD YEAR (9=1999) 6 - LINE/SHIFT CODE (3=3RD SHIFT) 7 - BUILD SEQUENCE NUMBER 8 - LAST THREE OF P/N 9 - ALPHA 10 - TRANSAXLE PART NUMBER 11 - P=PART NUMBER

transaxle part number, rather than the last three digits. OPERATION OPERATION ELEMENTS IN USE AT EACH POSITION OF SELECTOR LEVER  A = Applied  H = Holding  * = Limp-in Mode  ^ = Applied in coast only In total, the 62TE provides seven forward ratios and one reverse. The underdrive compounder assembly has two modes of operation: direct and reduction. Notice in the "What's On When" chart, the 2-3, 3-2, and 4-2 shifts require a "double swap" shift. This occurs when two elements are turned off while two different elements are engaged. This clutch-to-clutch synchronization takes place within 40 - 70 milliseconds, producing a smooth shift. If the underdrive compounder assembly shifts too early (in relation to the shifts taking place in the main centerline), a shudder or harsh shift results. If the underdrive assembly shifts too late, the driver experiences a "double bump" sensation. To avoid a double swap shift in a 6-4 downshift, the transaxle shifts into 4th prime, which requires the deactivation of the OD clutch and the simultaneous application of the UD clutch. REVERSE GEAR 62TE ELEMENTS APPLIED GEAR RATIO UD OD R 2-4 L-R LC DC ORC 1 4.127 A - - - A A ^ - H 2 2.842 A - - - A - A - 3* 2.284 A - - A - A ^ - H 4 1.573 A - - A - - A - 4 1.452 A A - - - A ^ - H 5 1.000 A A - - - - A - 6 0.689 - A - A - - A - R 3.215 - - A - A A - -

Fig. 4: Reverse Gear Power Flow Courtesy of CHRYSLER LLC In Reverse, the Reverse Clutch (R) (1) is applied to provide input torque. The reverse clutch drives the front sun gear. The L/R clutch (2) is applied to hold the front carrier/rear annulus assembly. The rear carrier/front annulus assembly rotates as an output member in reverse with a reduction gear ratio of 2.21:1. Power from the main centerline transfers to the underdrive compounder annulus by way of the transfer gears and the underdrive shaft. The Low Clutch (LC) (3) is applied to hold the underdrive compounder sun gear. With the sun gear held, the annulus drives the underdrive compounder carrier, and a reduction gear ratio of 1.45:1 is achieved The main centerline ratio of 2.21:1 is multiplied by the underdrive compounder centerline ratio of 1.45:1. As a result, the ratio through the entire gear train to the final drive in Reverse is 3.215:1. FIRST GEAR

41TE & 62TE Automatic Transmission Workshop Service Manual

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