Chrysler 62TE Istruzioni per l'uso e l'installazione

2009 AUTOMATIC TRANSMISSION

62TE - Service Information - Grand Caravan, Town & Country

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

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

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

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

. 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

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

transaxle part number, rather than the last three digits.

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.

otice 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 R2-4 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 - -

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

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

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

Fig. 5: 1st Gear Power Flow

Courtesy of CHRYSLER LLC

In First gear, the UD clutch (1) is applied to provide input torque. The UD hub is splined to the rear sun gear.

When the UD clutch is applied, the UD hub and rear sun gear are driven. The L/R clutch (2) is applied to hold

the front carrier/rear annulus assembly. By doing so, the rear planet gears are forced to rotate around the inside

of the stationary rear annulus. The rear carrier/front annulus assembly rotates as an output member with a

reduction gear ratio of 2.84:1.

Power from the main centerline transfers to the underdrive compounder annulus by way of the transfer gears

and the underdrive shaft. The Overrunning Clutch (ORC) holds the underdrive sun gear. The LC (3) is also

applied during coast in first gear. With the sun gear held, the annulus drives the underdrive compounder carrier,

and a reduction gear ratio of 1.45:1 is achieved by the underdrive compounder gear set.

The main centerline ratio of 2.84:1 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 First gear is 4.127:1.

SECOND GEAR

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

Fig. 6: 2nd Gear Power Flow

Courtesy of CHRYSLER LLC

In Second gear, the UD clutch (1) is applied to provide input torque. The UD hub is splined to the rear sun gear.

When the UD clutch is applied, the UD hub and rear sun gear are driven. The L/R clutch (2) is applied to hold

the front carrier/rear annulus assembly. By doing so, the rear planet gears are forced to rotate around the inside

of the stationary rear annulus. The rear carrier/front annulus assembly rotates as an output member with a

reduction gear ratio of 2.84:1.

Power from the main centerline transfers to the underdrive compounder gear set annulus by way of the transfer

gears and the underdrive shaft. The direct clutch (3) is applied to drive the underdrive compounder sun gear at

the same speed as the underdrive annulus. With two members driven, the underdrive compounder gear set

operates in direct, or 1:1.

The main centerline ratio of 2.84:1 is multiplied by the underdrive compounder centerline ratio of 1:1. As a

result, the ratio through the entire gear train to the final drive in Second gear is 2.84:1.

THIRD GEAR

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

Fig. 7: 3rd Gear Power Flow

Courtesy of CHRYSLER LLC

In Third gear, the UD clutch (1) is applied to drive the rear sun gear. The UD hub is splined to the rear sun gear.

When the UD clutch is applied, the UD hub and rear sun gear are driven. The 2/4 clutch (2) is applied to hold

the front sun gear. The rear carrier/front annulus rotates as an output member with a reduction gear ratio of

1.573:1.

Power from the main centerline transfers to the underdrive compounder annulus by way of the transfer gears

and the underdrive shaft. The Overrunning Clutch (ORC) holds (4) the underdrive sun gear. The LC (3) is also

applied during coast in first gear. With the sun gear held, the annulus drives the underdrive compounder carrier,

and a reduction gear ratio of 1.45:1 is achieved by the underdrive compounder gear set.

The main centerline ratio of 1.57:1 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 Third gear is 2.28:1.

Third gear is also the default (limp-in) gear position.

FOURTH GEAR PRIME

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

Fig. 8: 4th Gear Prime Power Flow

Courtesy of CHRYSLER LLC

In Fourth Prime, the UD clutch (1) is applied to drive the rear sun gear. The UD hub is splined to the rear sun

gear. When the UD clutch is applied, the UD hub and rear sun gear are driven. The 2/4 clutch (2) is applied to

hold the front sun gear. The rear carrier/front annulus rotates as an output member with a reduction gear ratio of

1.57:1.

Power from the main centerline transfers to the underdrive compounder gear set annulus by way of the transfer

gears and the underdrive shaft. The direct clutch (3) is applied to drive the underdrive compounder sun gear at

the same speed as the underdrive annulus. With two members driven, the underdrive compounder gear set

operates in direct, or 1:1.

The main centerline ratio of 1.57:1 is multiplied by the underdrive compounder centerline ratio of 1:1. As a

result, the ratio through the entire gear train to the final drive in Fourth Prime is 1.573:1.

FOURTH GEAR

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

steve

Fig. 9: 4th Gear Power Flow

Courtesy of CHRYSLER LLC

In Fourth gear, the UD (1) and OD clutches (2) are applied to provide input torque. The UD hub is splined to

the rear sun gear. When the UD clutch is applied, the UD hub and rear sun gear are driven. The OD hub

assembly is splined to the front carrier/rear annulus assembly. When the OD clutch is applied, the OD hub and

front carrier/rear annulus assembly are also driven. With the rear sun gear and the rear annulus driven at the

same speed and in the same direction, the entire front/rear planetary gear train is locked and rotating as one unit.

The rear carrier/front annulus rotates as an output member in direct, or 1:1.

Power from the main centerline transfers to the underdrive compounder annulus by way of the transfer gears

and the underdrive shaft. The Overrunning Clutch (ORC) (4) holds the underdrive sun gear. The LC (3) is also

applied during coast in first gear. With the sun gear held, the annulus drives the underdrive compounder carrier,

and a reduction gear ratio of 1.45:1 is achieved by the underdrive compounder gear set.

The main centerline ratio of 1:1 is multiplied by the underdrive compounder centerline ratio of 1:45. As a result,

the ratio through the entire gear train to the final drive in Fourth gear is 1.45:1.

FIFTH GEAR

2009 Chrysler Town & Country LX

2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country

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