Page 99 - Hydra-matic 6 Speed RWD Technician's Guide (October 2005)

70

➤
(67)
CENTER
SUPPORT
ASSEMBLY

2-6
➤
CLUTCH
APPLIED
4-5-6
CLUTCH
APPLIED
4
2-6
CLUTCH
APPLIED
(56)
4-5-6
(487)
HELD
➤
SHAFT)
CLUTCH
ASSEMBLY
(w/TURBINE
FRONT SUN GEAR
OUTPUT CARRIER
Figure 65
(58)
➤
4-5-6 CLUTCH
HUB ASSEMBLY
(w/OUTPUT CARRIER
SHAFT AND DAMPENER)
(68)
OUTPUT
DRIVING
CARRIER
6
ASSEMBLY
➤
FRONT
OUTPUT
CARRIER
INTERNAL
➤ ➤ ASSEMBLY The turbine shaft with 4-5-6 clutch assembly (56) is driven DIFFERENTIAL 1 ➤ drive shaft. ratio of 0.667:1 through the transmission gearset to the vehicle gear calibrations, a 6th gear is used to achieve an approximate To maximize engine performance and fuel economy beyond 5th DRIVEN (495) DRIVING GEAR APPLIED (68) (1) APPLIED ASSEMBLY CONVERTER SPRAG CLUTCH CLUTCH CARRIER TORQUE CLUTCH 4-5-6 OUTPUT POWER FROM LOW 2 3 1 (T orque Converter Clutch Applied) (Tor
➤
5
(487)
HELD
GEAR
OUTPUT
CARRIER
FRONT SUN
➤
(64)
HELD
2-6 AND
ASSEMBLY
3-5 REVERSE
CLUTCH HUB
(495)
GEAR
FRONT
DRIVEN
OUTPUT
CARRIER
INTERNAL
(70)
SHAFT
OUTPUT
POWER TO
ASSEMBLY
5
2
3
4
6
1-2-3-4
CLUTCH
3-5 REV.
2-6 Clutch Applied
4-5-6 Clutch Applied
approximately 0.667:1.
4-5-6
by the converter turbine.
CLUTCH
clutch hub assembly (64).
carrier front sun gear is held.
2-6
APPLIED
CLUTCH
Power from Torque Converter
Output Carrier Assembly Driving
Output Carrier Front Sun Gear Held
until the transmission downshifts into 5th gear.
CLUTCH
LOW & REV.
Output Carrier Internal Front Gear Driven
The output carrier is now driving at turbine speed.
DRIVE RANGE – 6TH GEAR
assembly (58), which is now rotating at turbine speed.
around the stationary front sun gear and drive the output
carrier internal front gear in a 6th gear overdrive ratio of
With the output carrier front sun gear held and the output
carrier driving, the output carrier front pinion gears walk
When the throttle is released in 6th Gear, the vehicle is allowed
elements to overrun to allow the vehicle to coast freely. Therefore,
engine compression slows the vehicle when the throttle is released
to coast brake. Because the low clutch sprag assembly is not
used in driving the vehicle during acceleration, there are no
the 4-5-6 clutch (w/ output carrier shaft and dampener) hub
The 4-5-6 clutch (w/ output carrier shaft and dampener) hub
The 4-5-6 clutch is located within the 4-5-6 (w/turbine shaft)
clutch assembly (56). When applied, the clutch plates engage
assembly (58) is splined to the output carrier assembly (68).
The 2-6 and 3-5 reverse clutch hub assembly is splined to
the output carrier front sun gear (487). Therefore, the output
The 2-6 clutch, which is located within the center support
assembly (67), is applied and holds the 2-6 and 3-5 reverse
70A