1999 DODGE RAM transmission fluid

Relief Pressure Test
1) Close gauge shutoff valve completely 3 times. Record
highest pressure attained each time. All 3 readings must be greater
than specifications and within 50 psi (3.5 kg/cm

) of each other. See
POWER STEERING PUMP PRESSURE TEST SPECIFICATIONS table. If pressures
are not as specified, replace pump. See POWER STEERING PUMP (GASOLINE)\
or VACUUM/POWER STEERING PUMP (DIESEL) under REMOVAL & INSTALLATION.
CAUTION: DO NOT hold steering wheel against stops more than 4 seconds,
or pump damage may result.
2) Open test valve and turn steering wheel to left and right
stops. Record highest pressure attained at each stop. If output
pressures are not equal against each stop, gear is leaking internally
and must be replaced. See STEERING GEAR under REMOVAL & INSTALLATION.
Shut off engine, remove test gauge, and connect pressure hose.
LUBRICATION
CAPACITY
CAPACITY\
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Models Pts. (L)\
Dakota (4WD) ............................................. 2.5 (1.2\
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Ram Pickup & Ram Van/Wagon ............................... 2.7 (1.3)\
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FLUID TYPE
CAUTION: DO NOT use Automatic Transmission Fluid (ATF).
Use Mopar Power Steering Fluid (4318055).
FLUID LEVEL CHECK
Check fluid level with engine cold and not running. Remove
fluid level dipstick on pump reservoir. Dipstick should indicate FULL
COLD with fluid temperature of 70-80
F (21-27C). If needed, add fluid
through dipstick opening, and recheck. DO NOT overfill.
HYDRAULIC SYSTEM BLEEDING
Fill power steering pump reservoir to specified level. Start
engine and slowly turn steering wheel to left and right, but DO NOT
contact steering stops in either direction. Stop engine. Inspect
reservoir fluid level and add fluid if necessary. Bleeding process may
have to be repeated several times to completely purge all air from
system.
ADJUSTMENTS
POWER STEERING PUMP BELT
Vehicles are equipped with dynamic tensioner. No adjustment
is required.
POWER STEERING PUMP PULLEY

Transmission speed sensor may also be referred to as
transmission output shaft speed sensor. Transmission speed sensor is
located on overdrive case at rear of transmission. Transmission speed
sensor delivers input signal to Powertrain Control Module (PCM) to
indicate transmission output shaft speed.
Overdrive Switch (A/T Models)
Transmission overdrive switch may be referred to as
overdrive/override switch, OD switch or overdrive off switch.
Transmission overdrive switch is located on end of gearshift lever.
When vehicle operator depresses transmission overdrive switch, an
input signal is delivered to the Powertrain Control Module (PCM). The
PCM uses input signal for controlling transmission overdrive shifts by
use of transmission overdrive solenoid on transmission valve body.
Transmission overdrive switch is normally in the ON position, allowing
transmission overdrive operation. If transmission overdrive switch is
depressed once, switch is in OFF position, allowing no transmission
overdrive upshift. If transmission overdrive switch is depressed
again, switch returns to the ON position, allowing transmission
overdrive operation.
Park/Neutral Switch (A/T Models)
Park/neutral switch delivers input signal to Powertrain
Control Module (PCM) to indicate if transmission is in Park, Neutral
or Drive. PCM uses input signal for controlling cruise control system,
transmission torque converter clutch operation and transmission
overdrive solenoid. When park/neutral switch is in Park or Neutral,
switch also provides a ground circuit for the engine starting system.
Park/neutral switch is located on the driver's side of transmission,
near shift linkage.
Transmission Governor Pressure Sensor (A/T Models)
Transmission governor pressure sensor delivers input signal
to Powertrain Control Module (PCM) to indicate transmission governor
pressure. PCM uses input signal for controlling governor pressure by
use of governor pressure solenoid on transmission valve body.
Transmission Temperature Sensor (A/T Models)
Transmission temperature sensor monitors transmission fluid
temperature and delivers input signal to Powertrain Control Module
(PCM). PCM uses input signal for controlling transmission torque
converter clutch operation, transmission overdrive shifts and governor
pressure. Transmission temperature sensor is located on transmission
valve body, incorporated into governor pressure sensor.
PCM prevents torque converter clutch engagement and
transmission overdrive operation when transmission fluid temperature
is less than 50
F (10C). If transmission fluid temperature is more
than 260F (126C), PCM forces a 4-3 downshift and engages torque
converter clutch until transmission fluid cools down. Once
transmission fluid cools to less than 230
F (110C), PCM allows a 3-4
shift again.
Vehicle Speed & Distance
Vehicle speed sensor is no longer used. The vehicle speed and
distance traveled are determined by rear wheel speed sensor. Rear
wheel speed sensor is mounted on top of rear axle housing, above the
ring gear. Rear wheel speed sensor delivers an input signal to
Controller Anti-Lock Brake (CAB) to indicate vehicle speed and
distance traveled. The CAB then delivers input signal to Powertrain
Control Module (PCM) to indicate vehicle speed and distance traveled.
PCM uses input signal for controlling control cruise control system
and fuel system. The CAB is mounted on top of the hydraulic control
unit. Hydraulic control unit contains the pump assembly that

signal to the transmission solenoid assembly for transmission
temperature sensor.
Generator Field
Engine Control Module (ECM) provides output signals to
generator field for regulating charging system voltage at 12.9-15.0
volts. ECM contains an internal electronic voltage regulator for
controlling the charging system voltage.
Generator Light
If Engine Control Module (ECM) senses a low charging system
condition, generator light on instrument panel (if equipped) will be
turned on. Generator light may also come on momentarily at low idle
speed when all accessories are on.
Malfunction Indicator Light (MIL)
The MIL is located on the instrument panel, just below
tachometer and may also be referred to as the CHECK ENGINE light. MIL
comes on for a short period and then goes off as a bulb and wiring
circuit test each time ignition switch is turned to the ON position.
If Engine Control Module (ECM) receives an incorrect signal or
receives no signal from certain sensors or components, ECM will turn
on the MIL to warn the driver that a malfunction exists in the
electronic system.
Overdrive Indicator Light (A/T Models)
Engine Control Module (ECM) delivers output signal to operate\
transmission overdrive indicator (O/D OFF) light in accordance with
position of the transmission overdrive switch. If overdrive is turned
off with transmission overdrive switch, transmission overdrive
indicator light will be turned on. Transmission overdrive indicator
light is located on instrument panel, just below the speedometer.
Tachometer
Engine Control Module (ECM) delivers output signal to operate\
tachometer on instrument panel to indicate engine RPM.
Transmission Overdrive Solenoid (A/T Models)
Engine Control Module (ECM) delivers output signal to
transmission overdrive solenoid for controlling transmission overdrive
shifts. Transmission overdrive solenoid is located on transmission
valve body.
Transmission Relay (A/T Models)
Transmission relay may be referred to as transmission control
relay or transmission 12-volt supply relay. Transmission relay ground
circuit is controlled by the Engine Control Module (ECM). When ground
circuit is completed, transmission relay supplies voltage to solenoid
assembly on the transmission. Transmission relay is located in power
distribution center at driver's side front corner of engine
compartment, near the battery.
Transmission Temperature Warning Light (A/T Models With
Heavy-Duty Transmission)
Engine Control Module (ECM) delivers output signal to turn on\
transmission temperature warning light if transmission fluid
temperature is determined to be greater than 280
F (138C) by the
transmission temperature sensor. Transmission temperature warning
light is located on instrument panel, just below the tachometer.
Transmission Torque Converter Clutch Solenoid (A/T Models)
Engine Control Module (ECM) delivers an output signal to
operate transmission torque converter clutch solenoid for torque

Power Steering Pressure Switch
On 2.5L Dakota only, power steering pressure switch sends a
signal to PCM. PCM will raise idle speed to prevent stalling during
high power steering pressure (375-575 psi), low RPM conditions.
Serial Communication Interface (SCI) Receive
SCI receive circuit is a serial communication link used when
diagnosing vehicle using scan tool. PCM receives data and device
activation commands from scan tool on this circuit.
Throttle Position (TP) Sensor
TP sensor monitors opening angle of throttle blade. TP sensor
will vary output voltage from about .26 volt at minimum throttle
opening (idle), to about 4.5 volts at Wide Open Throttle (WOT). PCM
uses this information and other sensor inputs to determine engine
operation. In response, PCM will adjust fuel injection pulse width and
ignition timing.
Transmission Governor Pressure Sensor (A/T Models)
Sensor sends PCM a signal indicating governor pressure. PCM
uses signal as feedback for governor solenoid control.
Transmission Overdrive/Override (OD/OR) Switch (A/T Models)
On models with Overdrive (OD), PCM regulates 3-4 OD upshift
and downshift through OD solenoid. Transmission OD/OR switch is
mounted in instrument panel.
OD/OR switch is normally closed. If OD/OR switch is depressed
and it opens, transmission will not enter OD. Transmission will
downshift if it is in OD and OD/OR switch is depressed.
OD/OR switch circuit includes a transmission fluid
temperature sensor. If this sensor opens, transmission will not shift
into overdrive, or will downshift if already in overdrive.
Transmission Temperature Sensor (A/T Models)
Transmission temperature sensor monitors transmission fluid
temperature and sends an input signal to PCM. Input signal is used for
controlling torque converter clutch operation, overdrive shifts, low
temperature shift compensation, wide open throttle shift strategy and
governor pressure. Transmission temperature sensor is located in
transmission valve body, incorporated into governor pressure sensor.
If transmission fluid temperature is more than 260
F (126C),
PCM forces a 4-3 downshift and engages torque converter clutch until
fluid cools. Once fluid cools to less than 230
F (110C), PCM allows a
3-4 shift. PCM prevents torque converter clutch engagement and
overdrive operation when fluid temperature is less than 50
F (10C).
Vehicle Speed Sensor (VSS)
VSS generates 8 pulses per sensor revolution. VSS input is
used by PCM to determine vehicle speed and distance traveled, and to
maintain set speed during cruise control operation.
PCM interprets speed sensor input along with TP sensor closed
throttle input. This enables PCM to determine if a closed throttle
deceleration or normal throttle idle (vehicle stopped) condition
exists. During deceleration, PCM controls IAC motor to maintain a
desired MAP value. During idle (vehicle stopped), PCM controls IAC
motor to maintain a desired idle speed.
OUTPUT SIGNALS
NOTE: Each vehicle may be equipped with different combinations of
computer-controlled components. The following components may
NOT be used on all models. To determine component location
and output usage on a specific model, see appropriate wiring

Fig. 2: Identifying Oil Pan Gasket (36RH, 46RE & 47RE)
LUBRICATION
SERVICE INTERVALS
Transmission
Check transmission fluid level when performing other
underhood services. Under normal service conditions or severe service
conditions change transmission fluid, adjust bands and replace
transmission filter at specified interval. See TRANSMISSION SERVICING
INTERVALS table. Severe service conditions are conditions such as long
periods of engine idling, trailer towing, off-highway operation, snow
removal, or operating in dusty or excessively hot conditions.
TRANSMISSION SERVICING INTERVALS









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Application Months Miles
Dakota & Durango
Normal Service ........................ 30 .............. 37,500
Severe Service ........................ ( 1) ............. 12,000

CHECKING FLUID LEVEL
Transmission
1) Drive vehicle until engine and transmission are at normal
operating temperature. Park vehicle on level surface. Apply parking
brake.
2) With engine idling, move shift lever through all gear
ranges, ending in Neutral. Check fluid level. Fluid level should be at
the MAX arrow mark area on dipstick with transmission fluid
temperature at 180
F (82C). Add appropriate type of transmission
fluid if necessary. See RECOMMENDED FLUID. DO NOT overfill
transmission.
Transfer Case
Park vehicle on level surface. Remove transfer case fill plug
from rear of transfer case. Fluid level should even with bottom of
transfer case fill plug hole on rear of transfer case. Add appropriate
type of transfer case fluid if necessary. See RECOMMENDED FLUID.
Install and tighten transfer case fill plug to specification. See
TORQUE SPECIFICATIONS.
Power Take-Off (PTO) Adapter (Ram Pickup 2WD 2500 & 3500)
Park vehicle on level surface. Remove fill plug from rear of
PTO adapter. See Fig. 3. Fluid level should even with bottom of fill
plug hole on rear of PTO adapter. Add appropriate type of fluid if
necessary. See RECOMMENDED FLUID. Install and tighten fill plug to
specification. See TORQUE SPECIFICATIONS.
Fig. 3: Locating Fill Plug & Drain Plug On PTO Adapter (Ram
Pickup 2WD 2500 & 3500)
Courtesy of Chrysler Corp.
RECOMMENDED FLUID

Transmission
Manufacturer recommends using Mopar ATF Plus Type 7176.
Manufacturer does not recommend using additives with transmission
fluid.
Transfer Case
Manufacturer recommends using Mopar ATF Plus Type 7176.
Power Take-Off (PTO) Adapter (Ram Pickup 2WD 2500 & 3500)
Manufacturer recommends using Mopar ATF Plus Type 7176.
FLUID CAPACITIES
TRANSMISSION REFILL CAPACITIES ( 1)








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Application Refill Dry Fill
Qts. (L) Qts. (L\
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Dakota & Durango
42RE, 44RE & 46RE ... ( 2) 1.5 (1.4) .... ( 3) 9.5-11.4 (9.0-10.8)
Ram Pickup
42RE ................ ( 2) 1.5 (1.4) .... ( 3) 8.5-11.0 (8.0-10.4)
46RE ................ ( 2) 1.5 (1.4) .... ( 3) 8.7-13.0 (8.2-12.3)
47RE ................ ( 2) 1.5 (1.4) .... ( 3) 8.7-16.9 (8.2-16.0)
Ram Van/Wagon
32RH & 36RH ......... ( 2) 1.5 (1.4) ...... ( 3) 8.5-9.0 (8.0-8.5)
46RE ................ ( 2) 1.5 (1.4) .. ( 3) 11.4-11.6 (10.8-11.0)
( 1) - Approximate quantity listed.
( 2) - Add fluid until fluid level is at MIN arrow mark on dipstick.
Start engine and allow engine to idle. With brakes applied,
shift transmission through all gears and back to Neutral. Add
additional fluid to bring fluid level to MIN mark on dipstick.
Recheck fluid level with transmission at normal operating
temperature. Adjust fluid level to MAX arrow mark on dipstick.
( 3) - Quantity may vary by type of oil cooler and oil cooler lines.









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TRANSFER CASE REFILL CAPACITIES ( 1)








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Application Pts. (L)\
Dakota & Durango
NV231 .................................................... 2.5 (1.2)\
NV242 .................................................... 2.8 (1.4)\
Ram Pickup
1500 ..................................................... 2.5 (1.2)\
2500 & 3500
2WD With Power Take-Off (PTO) Adapter ................. 9.0 (4.3\
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5.9L Diesel & V10 ..................................... 6.5 (3.1)\
All Others ............................................ 5.0 (2.4)\
(1) - Approximate quantity listed.









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POWER TAKE-OFF (PTO) ADAPTER REFILL CAPACITIES ( 1)








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Application Pts. (L)\
Ram Pickup
2WD 2500 & 3500 ........................................ 4.6 (2.2)\

(1) - Approximate quantity listed.








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DRAINING & FILLING
Transmission
1) Raise and support vehicle. Loosen oil pan bolts, allowing
fluid to drain from oil pan. Remove oil pan bolts, oil pan and gasket.
Remove oil filter bolts and oil filter from valve body.
2) Adjust kickdown band and low-reverse bands if necessary.
See KICKDOWN BAND and LOW-REVERSE BAND under ADJUSTMENTS.
3) Clean oil pan, magnet and all sealing surfaces. Install
NEW oil filter. Install and tighten oil filter bolts to specification.
See TORQUE SPECIFICATIONS.
4) Using NEW gasket, install oil pan. Install and tighten oil
pan bolts to specification. See TORQUE SPECIFICATIONS.
5) Add Mopar ATF Plus Type 7176 fluid until fluid level is at
MIN arrow mark on dipstick. Start engine and allow engine to idle.
With brakes applied, shift transmission through all gears and back to
Neutral.
6) Add additional fluid to bring fluid level to MIN mark on
dipstick. Recheck fluid level with transmission at normal operating
temperature. Adjust fluid level to MAX arrow mark on dipstick. DO NOT
overfill transmission.
Transfer Case
1) Ensure vehicle is parked on level surface. Remove transfer
case drain plug. Transfer case drain plug is located on rear of
transfer case at driver's side corner of transfer case. Allow fluid to
drain from transfer case.
2) Reinstall transfer case drain plug. Tighten transfer case
drain plug to specification. See TORQUE SPECIFICATIONS. Remove
transfer case fill plug from rear of transfer case. Transfer case fill
plug is located on rear of transfer case, just below identification
tag.
3) Fill transfer case with appropriate type of transfer case
fluid until fluid level is even with bottom of fill plug hole on
transfer case. See RECOMMENDED FLUID. Install and tighten transfer
case fill plug to specification. See TORQUE SPECIFICATIONS.
Power Take-Off (PTO) Adapter (Ram Pickup 2WD 2500 & 3500)
1) Ensure vehicle is parked on level surface. Remove drain
plug from rear of PTO adapter. See Fig. 3. Allow fluid to drain from
PTO adapter.
2) Reinstall drain plug. Tighten drain plug to specification.
See TORQUE SPECIFICATIONS. Remove fill plug from rear of PTO adapter.
See Fig. 3 .
3) Fill PTO adapter with appropriate type of fluid until
fluid level is even with bottom of fill plug hole on PTO adapter. See
RECOMMENDED FLUID. Install and tighten fill plug to specification. See
TORQUE SPECIFICATIONS.
ADJUSTMENTS
KICKDOWN BAND
1) Kickdown band is front band on transmission. Raise and
support vehicle. Loosen kickdown band adjusting screw lock nut while
preventing kickdown adjusting screw from rotating. Kickdown band
adjusting screw is located on side of transmission, near manual lever
shaft. See Fig. 4.
2) Back off kickdown band adjusting screw lock nut 5 turns.