2002 DODGE RAM differential lubrication

The higher engine speed and line pressure would
open the vent too far and reduce line pressure too
much. Throttle pressure, which increases with engine
speed (throttle opening), is used to oppose the move-
ment of the pressure valve to help control the meter-
ing passage at the vent. The throttle pressure is
combined with spring pressure to reduce the force of
the throttle pressure plug on the pressure valve. The
larger spring at the right closes the regulator valve
passage and maintains or increases line pressure.
The increased line pressure works against the reac-
tion area of the line pressure plug and the reaction
area left of land #3 simultaneously moves the regu-
lator valve train to the right and controls the meter-
ing passage.
The kickdown valve, along with the throttle valve,
serve to delay upshifts until the correct vehicle speed
has been reached. It also controls downshifts upon
driver demand, or increased engine load. If these
valves were not in place, the shift points would be at
the same speed for all throttle positions. The kick-
down valve is actuated by a cam connected to the
throttle. This is accomplished through either a link-
age or a cable. The cam forces the kickdown valve
toward the throttle valve compressing the spring
between them and moving the throttle valve. As the
throttle valve land starts to uncover its port, line
pressure is ªmeteredº out into the circuits and viewed
as throttle pressure. This increased throttle pressure
is metered out into the circuits it is applied to: the
1-2 and 2-3 shift valves. When the throttle pressure
is high enough, a 3-2 downshift will occur. If the
vehicle speed is low enough, a 2-1 downshift will
occur.
SWITCH VALVE
When the transmission is in Drive Second before
the TCC application occurs (Fig. 258), the pressure
regulator valve is supplying torque converter pres-
sure to the switch valve. The switch valve directs
this pressure through the transmission input shaft,
into the converter, through the converter, back out
between the input shaft and the reaction shaft, and
back up to the switch valve. From the switch valve,
the fluid pressure is directed to the transmission
cooler, and lubrication pressure returns from the
cooler to lubricate different portions of the transmis-
sion.Once the TCC control valve has moved to the right
(Fig. 259), line pressure is directed to the tip of the
switch valve, forcing the valve to the right. The
switch valve now vents oil from the front of the pis-
ton in the torque converter, and supplies line pres-
sure to the (rear) apply side of the torque converter
piston. This pressure differential causes the piston to
apply against the friction material, cutting off any
further flow of line pressure oil. After the switch
valve is shuttled right allowing line pressure to
engage the TCC, torque converter pressure is
directed past the switch valve into the transmission
cooler and lubrication circuits.
MANUAL VALVE
The manual valve (Fig. 260) is a relay valve. The
purpose of the manual valve is to direct fluid to the
correct circuit needed for a specific gear or driving
range. The manual valve, as the name implies, is
manually operated by the driver with a lever located
on the side of the valve body. The valve is connected
mechanically by either a cable or linkage to the gear-
shift mechanism. The valve is held in each of its
positions by a spring-loaded roller or ball that
engages the ªroostercombº of the manual valve lever.
CONVERTER CLUTCH LOCK-UP VALVE
The torque converter clutch (TCC) lock-up valve
controls the back (ON) side of the torque converter
clutch. When the PCM energizes the TCC solenoid to
engage the converter clutch piston, pressure is
applied to the TCC lock-up valve which moves to the
right and applies pressure to the torque converter
clutch.
CONVERTER CLUTCH LOCK-UP TIMING VALVE
The torque converter clutch (TCC) lock-up timing
valve is there to block any 4-3 downshift until the
TCC is completely unlocked and the clutch is disen-
gaged.
BR/BEAUTOMATIC TRANSMISSION - 47RE 21 - 405
VALVE BODY (Continued)

DIAGNOSIS AND TESTING - TIRE NOISE OR
VIBRATION
Radial-ply tires are sensitive to force impulses
caused by improper mounting, vibration, wheel
defects, or possibly tire imbalance.
To find out if tires are causing the noise or vibra-
tion, drive the vehicle over a smooth road at varying
speeds. Note the noise level during acceleration and
deceleration. The engine, differential and exhaust
noises will change as speed varies, while the tire
noise will usually remain constant.
STANDARD PROCEDURE - REPAIRING LEAKS
For proper repairing, a radial tire must be removed
from the wheel. Repairs should only be made if the
defect, or puncture, is in the tread area (Fig. 16). The
tire should be replaced if the puncture is located in
the sidewall.
Deflate tire completely before removing the tire
from the wheel. Use lubrication such as a mild soap
solution when dismounting or mounting tire. Use
tools free of burrs or sharp edges which could dam-
age the tire or wheel rim.
Before mounting tire on wheel, make sure all rust
is removed from the rim bead and repaint if neces-
sary.Install wheel on vehicle, and tighten to proper
torque specification, (Refer to 22 - TIRES/WHEELS/
WHEELS - SPECIFICATIONS).
SPECIFICATIONS
TIRE REVOLUTIONS PER MILE
TIRE SIZE SUPPLIER REVOLUTIONS PER MILE
P225/75/R16 XL GOODYEAR 716
P245/75R16
WRT/SGOODYEAR 692
P245/75R16
LTX A/SMICHELIN 691
P265/75R16
WRT/SGOODYEAR 668
LT245/75R16 LTX A/S MICHELIN 679
LT245/75R16 LTX M/S MICHELIN 678
LT265/75R16 LTX A/S MICHELIN 648
LT265/75R16 LTX M/S MICHELIN 652
LT275/70R17
WGSAGOODYEAR 650
LT235/85R16
WAPGOODYEAR 650
LT235/85R16
LTX M/SMICHELIN 650
Fig. 16 Tire Repair Area
1 - REPAIRABLE AREA
BR/BETIRES/WHEELS 22 - 9
TIRES (Continued)

AXLE BEARINGS - INSTALLATION . . . 3-123,3-62,
3-94
AXLE BEARINGS - REMOVAL . . . 3-123,3-62,3-94
AXLE LUBRICATION - DESCRIPTION.......0-5
AXLE SHAFT SEALS - INSTALLATION......3-31
AXLE SHAFT SEALS - REMOVAL.........3-31
AXLE SHAFTS - INSTALLATION . 3-123,3-29,3-62,
3-94
AXLE SHAFTS - INTERMEDIATE -
REMOVAL...........................3-30
AXLE SHAFTS - REMOVAL . 3-123,3-29,3-62,3-94
AXLE, SPECIAL TOOLS - FRONT..........3-27
AXLE VACUUM MOTOR - ASSEMBLY......3-34
AXLE VACUUM MOTOR - DESCRIPTION....3-31
AXLE VACUUM MOTOR - DISASSEMBLY . . . 3-34
AXLE VACUUM MOTOR - INSTALLATION . . . 3-34
AXLE VACUUM MOTOR - OPERATION.....3-31
AXLE VACUUM MOTOR - REMOVAL.......3-34
BACKLITE - INSTALLATION............23-145
BACKLITE - REMOVAL................23-145
BACKLITE LATCH AND KEEPER -
INSTALLATION......................23-146
BACKLITE LATCH AND KEEPER -
REMOVAL.........................23-146
BACKLITE VENT GLASS - INSTALLATION . 23-146
BACKLITE VENT GLASS - REMOVAL.....23-146
BAFFLE - INSTALLATION, HVAC
HOUSING INLET.....................24-36
BAFFLE - REMOVAL, HVAC HOUSING
INLET..............................24-35
BALANCE - STANDARD PROCEDURE,
TIRE AND WHEEL.....................22-4
BALL JOINT - DIAGNOSIS AND TESTING,
LOWER.............................2-10
BALL JOINT - DIAGNOSIS AND TESTING,
UPPER..............................2-12
BAND OPERATION - DIAGNOSIS AND
TESTING, AIR TESTING
TRANSMISSION CLUTCH.......21-100,21-272
BANDS - ADJUSTMENT.........21-151,21-321
BANDS - DESCRIPTION.........21-150,21-320
BANDS - OPERATION..........21-151,21-321
BAR - DIAGNOSIS AND TESTING, TRACK . . . 2-24
BAR - INSTALLATION, STABILIZER . . . 2-12,2-23,
2-29
BAR - INSTALLATION, TRACK............2-24
BAR - REMOVAL, STABILIZER . . . 2-12,2-23,2-29
BAR - REMOVAL, TRACK...............2-24
BARRELS - INSTALLATION, PANEL
OUTLET............................24-31
BARRELS - REMOVAL, PANEL OUTLET . . . 24-31
BASE BRAKE, SPECIFICATIONS............5-2
BASE BRAKE SYSTEM - DIAGNOSIS AND
TESTING.............................5-5
BASE BRAKES, SPECIAL TOOLS...........5-4
BASE COAT/CLEAR COAT FINISH -
DESCRIPTION......................23-129
BASE COAT/CLEAR COAT FINISH -
OPERATION........................23-129
BATTERIES - STANDARD PROCEDURE,
REMOTE KEYLESS ENTRY
TRANSMITTER.......................8N-8
BATTERY - DESCRIPTION...............8F-7
BATTERY - DIAGNOSIS AND TESTING.....8F-7
BATTERY CABLE - DESCRIPTION........8F-18
BATTERY CABLE - OPERATION..........8F-18
BATTERY CABLES - DIAGNOSIS AND
TESTING...........................8F-19
BATTERY CHARGING - STANDARD
PROCEDURE.........................8F-8
BATTERY HOLDDOWN - DESCRIPTION
....8F-17
BATTERY HOLDDOWN - INSTALLATION
. . . 8F-18
BATTERY HOLDDOWN - OPERATION
.....8F-17
BATTERY HOLDDOWN - REMOVAL
.......8F-17
BATTERY, SPECIFICATIONS
..............8F-6
BATTERY SYSTEM - CLEANING
...........8F-5
BATTERY SYSTEM - DESCRIPTION
........8F-1
BATTERY SYSTEM - DIAGNOSIS AND
TESTING
............................8F-2
BATTERY SYSTEM - INSPECTION
.........8F-6
BATTERY SYSTEM - OPERATION
.........8F-2
BATTERY TEMPERATURE SENSOR -
DESCRIPTION
.......................8F-27
BATTERY TEMPERATURE SENSOR -
INSTALLATION
.......................8F-28
BATTERY TEMPERATURE SENSOR -
OPERATION
.........................8F-27BATTERY TEMPERATURE SENSOR -
REMOVAL..........................8F-27
BATTERY TRAY - DESCRIPTION.........8F-23
BATTERY TRAY - INSTALLATION.........8F-24
BATTERY TRAY - OPERATION...........8F-23
BATTERY TRAY - REMOVAL............8F-23
BEAM INDICATOR - DESCRIPTION, HIGH . . 8J-21
BEAM INDICATOR - DIAGNOSIS AND
TESTING, HIGH......................8J-21
BEAM INDICATOR - OPERATION, HIGH....8J-21
BEARING - ADJUSTMENT, CENTER.........3-8
BEARING - INSTALLATION, CENTER........3-8
BEARING - INSTALLATION, CLUTCH
RELEASE............................6-12
BEARING - INSTALLATION, HUB.......2-17,2-9
BEARING - INSTALLATION, OUTPUT
SHAFT FRONT................21-171,21-342
BEARING - INSTALLATION, OUTPUT
SHAFT REAR.................21-172,21-343
BEARING - INSTALLATION, PILOT........6-14
BEARING - INSTALLATION, PITMAN......19-23
BEARING - REMOVAL, CENTER...........3-8
BEARING - REMOVAL, CLUTCH RELEASE . . . 6-12
BEARING - REMOVAL, HUB..........2-16,2-9
BEARING - REMOVAL, OUTPUT SHAFT
FRONT......................21-171,21-342
BEARING - REMOVAL, OUTPUT SHAFT
REAR.......................21-171,21-343
BEARING - REMOVAL, PILOT..............6-14
BEARING - REMOVAL, PITMAN..........19-22
BEARING AND CRANKSHAFT JOURNAL
CLEARANCE - STANDARD
PROCEDURE, CONNECTING ROD........9-158
BEARING CLEARANCE - STANDARD
PROCEDURE, MAIN...................9-159
BEARING FITTING - STANDARD
PROCEDURE, CONNECTING ROD.....9-29,9-87
BEARING FITTING - STANDARD
PROCEDURE, CRANKSHAFT MAIN........9-31
BEARINGS - DESCRIPTION,
CRANKSHAFT MAIN...................9-31
BEARINGS - INSTALLATION, AXLE . . . 3-123,3-62,
3-94
BEARINGS - INSTALLATION, CAMSHAFT . . 9-157,
9-28,9-86
BEARINGS - INSTALLATION,
CRANKSHAFT MAIN...............9-32,9-88
BEARINGS - INSTALLATION,
DIFFERENTIAL CASE.....3-102,3-129,3-41,3-72
BEARINGS - OPERATION, CRANKSHAFT
MAIN...............................9-31
BEARINGS - REMOVAL, AXLE . . . 3-123,3-62,3-94
BEARINGS - REMOVAL, CAMSHAFT . 9-152,9-27,
9-85
BEARINGS - REMOVAL, CRANKSHAFT
MAIN...........................9-31,9-88
BEARINGS - REMOVAL, DIFFERENTIAL
CASE.................3-102,3-129,3-40,3-72
BEARINGS - STANDARD PROCEDURE,
FITTING CRANKSHAFT MAIN............9-88
BELT / CHAIN COVER(S) -
INSTALLATION, TIMING...........9-110,9-54
BELT / CHAIN COVER(S) - REMOVAL,
TIMING........................9-110,9-53
BELT - DIAGNOSIS AND TESTING,
ACCESSORY DRIVE............7-24,7-27,7-30
BELT & RETRACTOR - INSTALLATION,
REAR SEAT.........................8O-26
BELT & RETRACTOR - REMOVAL, REAR
SEAT ..............................8O-26
BELT BUCKLE - INSTALLATION, FRONT
SEAT ..............................8O-20
BELT BUCKLE - INSTALLATION, REAR
SEAT ..............................8O-27
BELT BUCKLE - REMOVAL, FRONT SEAT . . 8O-20
BELT BUCKLE - REMOVAL, REAR SEAT . . . 8O-27
BELT SWITCH - DESCRIPTION, SEAT.....8O-28
BELT SWITCH - DIAGNOSIS AND
TESTING, SEAT......................8O-28
BELT SWITCH - OPERATION, SEAT.......8O-28
BELT TENSIONERS - 5.9L -
DESCRIPTION
........................7-19
BELT TENSIONERS - 5.9L -
INSTALLATION
........................7-20
BELT TENSIONERS - 5.9L - OPERATION
....7-19
BELT TENSIONERS - 5.9L - REMOVAL
.....7-19
BELT TENSIONERS - 5.9L DIESEL -
DESCRIPTION
........................7-23BELT TENSIONERS - 5.9L DIESEL -
INSTALLATION........................7-23
BELT TENSIONERS - 5.9L DIESEL -
OPERATION..........................7-23
BELT TENSIONERS - 5.9L DIESEL -
REMOVAL...........................7-23
BELT TENSIONERS - 8.0L -
DESCRIPTION........................7-20
BELT TENSIONERS - 8.0L -
INSTALLATION........................7-22
BELT TENSIONERS - 8.0L - OPERATION....7-21
BELT TENSIONERS - 8.0L - REMOVAL.....7-21
BELT TURNING LOOP ADJUSTER -
INSTALLATION, SEAT.................8O-29
BELT TURNING LOOP ADJUSTER -
REMOVAL, SEAT.....................8O-29
BELT WEATHERSTRIP - INSTALLATION,
FRONT DOOR INNER.................23-153
BELT WEATHERSTRIP - INSTALLATION,
FRONT DOOR OUTER................23-153
BELT WEATHERSTRIP - REMOVAL,
FRONT DOOR INNER.................23-153
BELT WEATHERSTRIP - REMOVAL,
FRONT DOOR OUTER................23-153
BELT/CHAIN AND SPROCKETS -
INSTALLATION, TIMING...........9-111,9-55
BELT/CHAIN AND SPROCKETS -
REMOVAL, TIMING...............9-111,9-54
BELTS - 5.9L - INSTALLATION, DRIVE.....7-26
BELTS - 5.9L - REMOVAL, DRIVE.........7-26
BELTS - 5.9L DIESEL - INSTALLATION,
DRIVE..............................7-32
BELTS - 5.9L DIESEL - REMOVAL, DRIVE . . 7-32
BELTS - 8.0L - INSTALLATION, DRIVE.....7-29
BELTS - 8.0L - REMOVAL, DRIVE.........7-29
BENCH - INSTALLATION, SEAT - SPLIT . . 23-134
BENCH - INSTALLATION, SEAT BACK -
SPLIT.............................23-136
BENCH - INSTALLATION, SEAT BACK
COVER - SPLIT.....................23-137
BENCH - INSTALLATION, SEAT CUSHION
COVER - SPLIT.....................23-140
BENCH - INSTALLATION, SEAT TRACK -
SPLIT.............................23-142
BENCH - REMOVAL, SEAT - SPLIT......23-133
BENCH - REMOVAL, SEAT BACK - SPLIT . 23-135
BENCH - REMOVAL, SEAT BACK COVER
- SPLIT...........................23-137
BENCH - REMOVAL, SEAT CUSHION
COVER - SPLIT.....................23-139
BENCH - REMOVAL, SEAT TRACK -
SPLIT.............................23-142
BENCH SEAT - INSTALLATION, SEAT....23-133
BENCH SEAT - INSTALLATION, SEAT
BACK.............................23-135
BENCH SEAT - REMOVAL, SEAT........23-133
BENCH SEAT - REMOVAL, SEAT BACK . . . 23-135
BEZEL - INSTALLATION, CLUSTER......23-108
BEZEL - REMOVAL, CLUSTER..........23-108
BIN - INSTALLATION, CUBBY..........23-109
BIN - INSTALLATION, STORAGE........23-114
BIN - REMOVAL, CUBBY..............23-108
BIN - REMOVAL, STORAGE............23-114
BLADE - DESCRIPTION, WIPER.........8R-12
BLADE - INSTALLATION, WIPER.........8R-13
BLADE - OPERATION, WIPER...........8R-13
BLADE - REMOVAL, WIPER............8R-13
BLEED - STANDARD PROCEDURE, AIR....14-61
BLEEDING - STANDARD PROCEDURE......5-19
BLEEDING - STANDARD PROCEDURE,
MANUAL.............................5-7
BLEEDING - STANDARD PROCEDURE,
MASTER CYLINDER...................5-27
BLEEDING - STANDARD PROCEDURE,
PRESSURE...........................5-8
BLEEDING ABS BRAKE SYSTEM -
STANDARD PROCEDURE................5-36
BLEND DOOR - INSTALLATION..........24-37
BLEND DOOR - REMOVAL.............24-37
BLEND DOOR ACTUATOR -
INSTALLATION.......................24-25
BLEND DOOR ACTUATOR - REMOVAL
....24-25
BLOCK - CLEANING, ENGINE
........9-27,9-85
BLOCK - DESCRIPTION, BLOWER
MOTOR RESISTOR
...................24-23
BLOCK - DESCRIPTION, JUNCTION
....8W-97-6
BLOCK - DIAGNOSIS AND TESTING,
BLOWER MOTOR RESISTOR
............24-23
BR/BEINDEX 3
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