torque DODGE RAM SRT-10 2006 Service Repair Manual

ASSEMBLY
1. Lubricate pump gears (9, 10) with transmission fluid and install them inpump body (3).
2. Install thrust washer (8) on reaction shaft (5) support hub. Lubricate washer with petroleum jelly or transmission
fluid before installation.
3. If reaction shaft seal rings (6) are being replaced, install new seal rings on support hub. Lubricate seal rings with
transmission fluid or petroleum jelly after installation. Squeeze each ring until ring ends are securely hooked
together.
CAUTION: The reaction shaft support seal rings will break if overspread, or twisted. If new rings are being
installed, spread them only enough forinstallation. Also be very sure thering ends are securely hooked
together after installation. Otherwise, the rings will either prevent pump installation, or break during instal-
lation.
4. Align and install reaction shaft support (5) on pump body (3).
5. Install bolts (7) attaching reaction shaft support to pump. Tighten bolts to 20 Nꞏm (175 in. lbs.) torque.
6. Install new o-ring (11) on pump body. Lubricate oil seal and o-ring with petroleum jelly.
Oil Pump Assembly
1 - OIL SEAL 7 - BOLTS (6)
2 - VENT BAFFLE 8 - #1 THRUST WASHER (SELECTIVE)
3 - OIL PUMP BODY 9 - INNER GEAR
4 - GASKET 10 - OUTER GEAR
5 - REACTION SHAFT SUPPORT 11 - “O” RING
6 - SEAL RINGS 12 - TORQUE CONVERTER SEAL RING

CLUTCH-OVERDRIVE
DESCRIPTION
The overdrive clutch is composed of the pressure plate (2), clutch plates,holding discs, overdrive piston retainer,
piston, piston spacer, and snap-rings. The overdrive clutch is the forwardmost component in the transmission over-
drive unit and is considered a holding component. The overdrive piston retainer, piston, and piston spacer are
located on the rear of the main transmission case.
NOTE: The number of discs and plates may vary with each engine and vehicle combination.
OPERATION
To apply the clutch, pressure is applied between the piston retainer and piston. The fluid pressure is provided by the
oil pump, transferred through the control valves and passageways, and enters the clutch through passages at the
lower rear portion of the valve body area. With pressure applied between the piston retainer and piston, the piston
moves away from the piston retainer and compresses the clutch pack. This action applies the clutch pack, allowing
torque to flow through the intermediate shaft into the overdrive planetary gear set. The overdrive clutch discs are
attached to the overdrive clutch hub while the overdrive clutch plates, reaction plate, and pressure plate are lugged
to the overdrive housing. This allows the intermediate shaft to transfer the engine torque to the planetary gear and
overrunning clutch. This drives the planetary gear inside the annulus, which is attached to the overdrive clutch drum
and output shaft, creating the desired gear ratio. The waved snap-ring is used to cushion the application of the
clutch pack for the 5 disc version of the overdrive clutch. The 6 disc overdrive clutch does not use a waved snap-
ring.
Overdrive Clutch
1 - REACTION PLATE 2 - PRESSURE PLATE

GEAR CASE
1. Position park pawl and spring in case and install
park pawl shaft. Verify that end of spring with 90°
bend is hooked to pawl and straight end of spring
is seated against case.
2. Install pawl shaft retaining bolt. Tighten bolt to 27
Nꞏm (20 ft. lbs.) torque.
3. Install park lock reaction plug (3). Note that plug
has locating pin (2) at rear. Be sure pin is seated in
hole in case before installing snap-ring (1).
4. Install reaction plug snap-ring (1). Compress snap-
ring only enough for installation; do not distort it.
5. Verify that tab ends of rear bearing locating ring (2)
extend into access hole (1) in gear case.

14. Position overdrive piston retainer (1) on transmis-
sion case and align bolt holes in retainer (1), gas-
ket (2), and case. Then install and tighten retainer
bolts (3)to 17 Nꞏm (13 ft. lbs.) torque.
15. Install new seals on overdrive piston.
16. Stand transmission case upright on bellhousing.
17. Position Guide Ring 8114-1 on outer edge of
overdrive piston retainer.
18. Position Seal Guide 8114-3 on inner edge of over-
drive piston retainer.
19. Install overdrive piston in overdrive piston retainer
by: aligning locating lugs on overdrive piston to
the two mating holes in retainer.
a. Aligning locating lugs on overdrive piston to the
two mating holes in retainer.
b. Lubricate overdrive piston seals with Mopar
Door Ease, or equivalent.
c. Install piston over Seal Guide 8114-3 and
inside Guide Ring 8114-1.
d. Push overdrive piston into position in retainer.
e. Verify that the locating lugs entered the lug bores in the retainer.

CLUTCH-REAR
DESCRIPTION
The rear clutch assembly is composed of the rear clutch retainer (1), pressure plate (8), clutch plates (12), driving
discs (9), piston (15), Belleville spring (7), and snap-rings (10). The Belleville spring acts as a lever to multiply the
force applied on to it by the apply piston. The increased apply force on the rear clutch pack, in comparison to the
front clutch pack, is needed to hold against the greater torque load imposed onto the rear pack. The rear clutch is
directly behind the front clutch and is considered a driving component.
NOTE: The number of discs and plates may vary with each engine and vehicle combination.
OPERATION
To apply the clutch, pressure is applied between the clutch retainer and piston. The fluid pressure is provided by the
oil pump, transferred through the control valves and passageways, and enters the clutch through the hub of the
reaction shaft support. With pressure applied between the clutch retainer and piston, the piston moves away from
the clutch retainer and compresses the clutch pack. This action applies the clutch pack, allowing torque to flow
through the input shaft into the driving discs, and into the clutch plates and pressure plate that are lugged to the
clutch retainer. The waved spring is used to cushion the application of theclutch pack. The snap-ring is selective
and used to adjust clutch pack clearance.
When pressure is released from the piston, the spring returns the piston toits fully released position and disen-
gages the clutch. The release spring also helps to cushion the applicationof the clutch assembly. When the clutch
is in the process of being released by the release spring, fluid flows through a vent and one-way ball-check-valve
located in the piston. The check-valve is needed to eliminate the possibility of plate drag caused by centrifugal force
acting on the residual fluid trapped in the clutch piston retainer.
Rear Clutch Components
1 - REAR CLUTCH RETAINER 11 - REACTION PLATE
2 - TORLON™ SEAL RINGS 12 - CLUTCH PLATES
3 - INPUT SHAFT 13 - WAVE SPRING
4 - PISTON RETAINER 14 - SPACER RING
5 - OUTPUT SHAFT THRUST WASHER 15 - PISTON
6 - INNER PISTON SEAL 16 - OUTER PISTON SEAL
7 - PISTON SPRING 17 - REAR SEAL RING
8 - PRESSURE PLATE 18 - FIBER THRUST WASHER
9 - CLUTCH DISCS 19 - RETAINING RING
10 - SNAP-RING (SELECTIVE)

CONVERTER-TORQUE
DESCRIPTION
The torque converter is a hydraulic device that cou-
ples the engine crankshaft to the transmission. The
torque converter consists of an outer shell with an
internal turbine (1), a stator (4), an overrunning clutch,
an impeller (2), and an electronically applied converter
clutch (6). The converterclutch provides reduced
engine speed and greater fuel economy when
engaged. Clutch engagement also provides reduced
transmission fluid temperatures. The torque converter
hub drives the transmission oil (fluid) pump.
The torque converter is a sealed, welded unit that is
not repairable and is serviced as an assembly.
CAUTION: The torque converter must be replaced
if a transmission failure resulted in large amounts
of metal or fiber contamination in the fluid.

TURBINE
The turbine is the output, or driven, member of the converter. The turbine is mounted within the housing opposite
the impeller, but is not attached to the housing. The input shaft is inserted through the center of the impeller and
splined into the turbine. The design of the turbine is similar to the impeller, except the blades of the turbine are
curved in the opposite direction.
STATOR
The stator assembly is mounted on a stationary shaft
which is an integral part of the oil pump. The stator
contains an over-running clutch (1-4), which allows the
stator to rotate only in a clockwise direction. When the
stator is locked against theover-runningclutch,the
torque multiplication feature of the torque converter is
operational.
Turbine
1 - TURBINE VANE 4 - PORTION OF TORQUE CONVERTER COVER
2 - ENGINE ROTATION 5 - ENGINE ROTATION
3 - INPUT SHAFT 6 - OIL FLOW WITHIN TURBINE SECTION

The stator (1) is located between the impeller (2) and
turbine (4) within the torque converter case.
TORQUE CONVERTER CLUTCH (TCC)
The TCC was installed to improve the efficiency of the
torque converter that is lost to the slippage of the fluid
coupling. Although the fluid coupling provides smooth,
shock-free power transfer, it is natural for all fluid cou-
plings to slip. If the impeller and turbine were mechan-
ically locked together, a zero slippage condition could
be obtained. A hydraulic piston (6) was added to the
turbine (5), and a friction material (7) was added to
the inside of the front cover (1) to provide this
mechanical lock-up.

OPERATION
The converter impeller (driving member), which is integral to the converter housing and bolted to the engine drive
plate, rotates at engine speed. The converter turbine (driven member), which reacts from fluid pressure generated
by the impeller, rotates and turns the transmission input shaft.
TURBINE
As the fluid that was put into motion bythe impeller blades strikes the blades of the turbine, some of the energy and
rotational force is transferred into the turbine and the input shaft. Thiscauses both of them (turbine and input shaft)
to rotate in a clockwise direction following the impeller. As the fluid is leaving the trailing edges of the turbine’s
blades it continues in a “hindering” direction back toward the impeller. If the fluid is not redirected before it strikes
the impeller, it will strike the impeller in a direction that would tend to slow it down.
Torque Converter Fluid Operation
1 - APPLY PRESSURE 3 - RELEASE PRESSURE
2 - THE PISTON MOVES SLIGHTLY FORWARD 4 - THE PISTON MOVES SLIGHTLY REARWARD

STATOR
Torque multiplication is achieved by locking the sta-
tor’s over-running clutch to its shaft. Under stall condi-
tions the turbine is stationary and the oil leaving the
turbine blades strikes the face of the stator blades and
tries to rotate them in a counterclockwise direction.
When this happens the overrunning clutch of the sta-
tor locks and holds the stator from rotating. With the
stator locked, the oil strikes the stator blades (1) and
is redirected into a “helping” direction before it enters
the impeller. This circulation of oil from impeller to tur-
bine, turbine to stator, and stator to impeller, can pro-
duce a maximum torque multiplication of about 1.75:1.
As the turbine begins to match the speed of the impel-
ler, the fluid that was hitting the stator in such as way
as to cause it to lock-up is no longer doing so. In this
condition of operation, the stator begins to free wheel
and the converter acts as a fluid coupling.
TORQUE CONVERTER CLUTCH (TCC)
The torque converter clutch is hydraulically applied or released when fluid is feed or vented from the hydraulic circuit
by the torque converter control (TCC) solenoid on the valve body. The torque converter clutch is controlled by the
Powertrain Control Module (PCM). The torque converter clutch engages in FOURTH gear, and in THIRD gear under
various conditions, such as when the O/D switch is OFF, or when the vehicle is cruising on a level surface after the
vehicle has warmed up. The torque converter clutch can also be engaged in the MANUAL SECOND gear position
if high transmission temperatures are sensed by the PCM. The torque converter clutch may disengage momentarily
when an increase in engine load is sensed by the PCM, such as when the vehiclebegins to go uphill or the throttle
pressure is increased.
REMOVAL
1. Remove transmission and torque converter from vehicle. (Refer to 21 - TRANSMISSION/AUTOMATIC - 45RFE/
545RFE - REMOVAL)
2. Place a suitable drain pan under the converter housing end of the transmission.
CAUTION: Verify that transmission is secure on the lifting device or work surface, the center of gravity of
the transmission will shift when the torque converter is removed creatingan unstable condition. The torque
converter is a heavy unit. Use caution when separating the torque converter from the transmission.
3. Pull the torque converter forward until the center hub clears the oil pumpseal.
4. Separate the torque converter from the transmission.
Stator Operation
1 - DIRECTION STATOR WILL FREE WHEEL DUE TO OIL
PUSHING ON BACKSIDE OF VANES
2-FRONTOFENGINE
3 - INCREASED ANGLE AS OIL STRIKES VANES
4 - DIRECTION STATOR IS LOCKED UP DUE TO OIL PUSHING
AGAINST STATOR VANES