Page 92 - Hydra-matic 6 Speed RWD Technician's Guide (October 2005)

66
(51)
CONVERTER
ASSEMBLY
1-2-3-4 AND 3-5
REVERSE CLUTCH
➤
➤
➤
1-2-3-4
APPLIED
CLUTCH
(52)
INPUT
DRIVEN
CARRIER
2
➤
(61)
ASSEMBLY
1-2-3-4
GEAR
INPUT
ASSEMBLY
INTERNAL
CLUTCH HUB
➤
(53)
HELD
INPUT
SUN GEAR
➤
6
➤
CLUTCH
Figure 61
GEAR
INPUT
DRIVING
INTERNAL
➤
(68)
➤
OUTPUT
ASSEMBLY
CARRIER
OUTPUT
DRIVING
ASSEMBLY
(489)
REAR
OUTPUT
DRIVING
CARRIER
SUN GEAR
4-5-6
➤
APPLIED
CLUTCH
GEARS
PINION
DRIVEN
➤
OUTPUT
➤
CARRIER
REAR OUTER
➤ approximately 1.152:1. gearsets continue to operate in reduction at a gear ratio of ➤ ➤ shift the transmission into 4th gear. In 4th gear the planetary DRIVING ➤ (489) SUN GEAR (TP) sensor, and other vehicle sensors are sent to the TCM. The REAR ➤ transmission speed sensors (input and output), throttle position CARRIER ➤ DRIVEN (497) 4 DRIVING GEAR (68) APPLIED DRIVING REAR (1) APPLIED APPLIED INTERNAL SPRAG CARRIER CLUTCH CLUTCH CARRIER TORQUE 4-5-6 1-2-3-4 OUTPUT
➤
(56)
4-5-6
SHAFT)
CLUTCH
ASSEMBLY
(w/TURBINE
OUTPUT
DRIVING
CARRIER
REAR INNER
PINION GEARS
➤
(58)
5a
(497)
REAR
GEAR
REAR
DRIVEN
OUTER
PINION
GEARS
OUTPUT
DRIVEN
CARRIER
OUTPUT
4-5-6 CLUTCH
INTERNAL
CARRIER
HUB ASSEMBLY
5
(w/OUTPUT CARRIER
SHAFT AND DAMPENER)
OUTPUT
DRIVING
CARRIER
REAR INNER
PINION GEARS
POWER TO
ASSEMBLY
OUTPUT
DIFFERENTIAL
(70)
SHAFT
OUTPUT
ASSEMBLY
2
3
4
7
1
8
6
5/5a
1-2-3-4
1.152:1.
assembly.
CLUTCH
3-5 REV.
rear sun gear (489).
4-5-6 Clutch Applied
4-5-6
CLUTCH
APPLIED
1-2-3-4 Clutch Applied
by the converter turbine.
direction of the sun gear.
2-6
Input Internal Gear Driving
CLUTCH
Power from Torque Converter
Output Carrier Assembly Driving
shift to an overdrive gear ratio, or 5th gear.
CLUTCH
Output Carrier Rear Sun Gear Driving
LOW & REV.
until the transmission downshifts into 3rd gear.
Output Carrier Internal Rear Gear Driven
Output Carrier Rear Pinion Gears Driving
LOW
CLUTCH
The output carrier is now driving at turbine speed.
DRIVE RANGE – 4TH GEAR
assembly (58), which is now rotating at turbine speed.
the same direction as the turbine shaft but in reduction.
3-4 clutch hub assembly (61) and rotates at the same speed
The 4-5-6 clutch (w/ output carrier shaft and dampener) hub
outer pinion gears, which in turn drive the output carrier
and the same direction as the 1-2-3-4 and 3-5 reverse clutch
assembly (58) is splined to the output carrier assembly (68).
elements to overrun to allow the vehicle to coast freely. Therefore,
The output carrier rear sun gear (489) is splined to the 1-2-
engine compression slows the vehicle when the throttle is released
to operate the engine efficiently. Therefore, it is desirable to
pinion gears of the rear carrier assembly in the opposite
carrier driving, the rear inner pinion gears drive the rear
The output carrier rear sun gear drives the inner planetary
clutch assembly (56). When applied, the clutch plates engage
the 4-5-6 clutch (w/ output carrier shaft and dampener) hub
As vehicle speed increases, less torque multiplication is required
The 4-5-6 clutch is located within the 4-5-6 (w/turbine shaft)
hub assembly (61), which is splined to the output carrier
5-6 clutch assembly (56). The input internal gear drives the
The input internal gear is located in the turbine shaft with 4-
input sun gear (53), thus driving the input carrier assembly
input carrier pinion gears which rotate around the stationary
The turbine shaft with 4-5-6 clutch assembly (56) is driven
TCM uses this information to determine the precise moment to
As vehicle speed increases further, input signals from the
With the output carrier rear sun gear driving and the output
used in driving the vehicle during acceleration, there are no
and 3-5 reverse clutch assembly (51), which is rotating in
internal rear gear with a 4th gear ratio of approximately
The 1-2-3-4 clutch is applied and holds the 1-2-3-4 clutch
When the throttle is released in 4th gear, the vehicle is allowed
to coast brake. Because the low clutch sprag assembly is not
(52) in reduction. The input carrier is splined to the 1-2-3-4
66A