1999 DODGE RAM oil type

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)








\









\









\









\









\









\









\







Application Refill Dry Fill
Qts. (L) Qts. (L\
)
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.









\









\









\









\









\









\









\







TRANSFER CASE REFILL CAPACITIES ( 1)








\









\









\









\









\









\









\







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\
)
5.9L Diesel & V10 ..................................... 6.5 (3.1)\
All Others ............................................ 5.0 (2.4)\
(1) - Approximate quantity listed.









\









\









\









\









\









\









\







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








\









\









\









\









\









\









\







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

(1) - Approximate quantity listed.








\









\









\









\









\









\









\







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.

1) Low-reverse band is rear band on transmission. Oil pan
must be removed from transmission to adjust low-reverse band. Raise
and support vehicle. Loosen oil pan bolts. Allow fluid to drain from
oil pan. Remove oil pan bolts, oil pan and gasket.
2) Loosen low-reverse band adjusting screw lock nut while
preventing low-reverse band adjusting screw from rotating. Low-reverse
band adjusting screw lock nut and low-reverse band adjusting screw are
located inside transmission, near low-reverse band. See Fig. 5.
3) Back off low-reverse band adjusting screw lock nut 5
turns. Ensure low-reverse band adjusting screw rotates freely in
transmission case.
4) Tighten low-reverse band adjusting screw to 72 INCH lbs.
(8.1 N.m). Back off low-reverse band adjusting screw specified amount
of turns. See LOW-REVERSE BAND ADJUSTMENT table. Hold low-reverse band
adjusting screw and tighten low-reverse band adjusting screw lock nut
to specification. See TORQUE SPECIFICATIONS.
LOW-REVERSE BAND ADJUSTMENT









\









\









\









\









\









\









\







Application Back Off Adjusting Screw
32RH ....................................................... 4 Turns
36H ........................................................ 2 Turns
42RE ....................................................... 4 Turns
44RE ....................................................... 4 Turns
46RE ....................................................... 2 Turns
47RE ....................................................... 3 Turns









\









\









\









\









\









\









\







5) Clean oil pan, magnet and all sealing surfaces. Using NEW
gasket, install oil pan. Install and tighten oil pan bolts to
specification. See TORQUE SPECIFICATIONS.
6) 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.
7) 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.
Fig. 5: Locating Low-Reverse Band Adjusting Screw & Low-Reverse
Band Adjusting Screw Lock Nut
Courtesy of Chrysler Corp.
SHIFT CABLE

Transmission (Dakota)
Check transmission fluid level when performing other
underhood services. Under normal service conditions, change
transmission fluid at 30 months or 37,500 miles. Under severe service
conditions, change transmission fluid at 18,000 miles. Severe service
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 (Ram Pickup)
Check transmission fluid level when performing other
underhood services. Fluid change service interval information is not
available from manufacturer.
Transfer Case
Check transfer case fluid level when performing other
underhood services. On Dakota and Light-Duty Pickup, change transfer
case fluid at 37,500 miles or 30 months. On Medium-Duty and Heavy-Duty
Pickup, change transfer case fluid at 36,000 miles or 36 months.
CHECKING FLUID LEVEL
Transmission (Dakota)
1) Park vehicle on level surface. Remove transmission fill
plug from side of transmission. On AX-15 transmission, transmission
fill plug is located on driver's side of transmission. On NV3500
transmission, transmission fill plug is located near front of
transmission on passenger's side of transmission.
2) On all transmissions, fluid level should even with bottom
of fill plug hole on side of transmission. Add appropriate type of
transmission fluid if necessary. See RECOMMENDED FLUID. Install and
tighten transaxle fill plug to specification. See TORQUE
SPECIFICATIONS.
Transmission (Ram Pickup)
1) Park vehicle on level surface. Remove transmission fill
plug from side of transmission. On NV3500 transmissions, transmission
fill plug is located near front of transmission on passenger's side of
transmission. On NV4500 transmissions, transmission fill plug is
located near rear of transmission on passenger's side of transmission.
2) On all transmissions, fluid level should even with bottom
of fill plug hole on side of transmission. Add appropriate type of
transmission fluid if necessary. See RECOMMENDED FLUID. Install and
tighten transaxle fill plug to specification. See TORQUE
SPECIFICATIONS.
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.
RECOMMENDED FLUID
Transmission (Dakota)
On AX-15 transmissions, use API 75W-90 GL-3 gear oil. On
NV1500 and NV3500 transmissions, use ONLY Mopar M/T Lube Part No.
4761526.
Transmission (Ram Pickup)

the types of injector circuits that your noid lights are designed for.
There are three. They are:
* Systems with a voltage controlled injector driver. Another
way to say it: The noid light is designed for a circuit with
a "high" resistance injector (generally 12 ohms or above).
* Systems with a current controlled injector driver. Another
way to say it: The noid light is designed for a circuit with
a low resistance injector (generally less than 12 ohms)
without an external injector resistor.
* Systems with a voltage controlled injector driver and an
external injector resistor. Another way of saying it: The
noid light is designed for a circuit with a low resistance
injector (generally less than 12 ohms) and an external
injector resistor.
NOTE: Some noid lights can meet both the second and third
categories simultaneously.
If you are not sure which type of circuit your noid light is
designed for, plug it into a known good car and check out the results.
If it flashes normally during cranking, determine the circuit type by
finding out injector resistance and if an external injector resistor
is used. You now know enough to identify the type of injector circuit.
Label the noid light appropriately.
Next time you need to use a noid light for diagnosis,
determine what type of injector circuit you are dealing with and
select the appropriate noid light.
Of course, if you suspect a no-pulse condition you could plug
in any one whose connector fit without fear of misdiagnosis. This is
because it is unimportant if the flashing light is dim or bright. It
is only important that it flashes.
In any cases of doubt regarding the use of a noid light, a
lab scope will overcome all inherent weaknesses.
OVERVIEW OF DVOM
A DVOM is typically used to check injector resistance and
available voltage at the injector. Some techs also use it check
injector on-time either with a built-in feature or by using the
dwell/duty function.
There are situations where the DVOM performs these checks
dependably, and other situations where it can deceive you. It is
important to be aware of these strengths and weaknesses. We will cover
the topics above in the following text.
Checking Injector Resistance
If a short in an injector coil winding is constant, an
ohmmeter will accurately identify the lower resistance. The same is
true with an open winding. Unfortunately, an intermittent short is an
exception. A faulty injector with an intermittent short will show
"good" if the ohmmeter cannot force the short to occur during testing.
Alcohol in fuel typically causes an intermittent short,
happening only when the injector coil is hot and loaded by a current
high enough to jump the air gap between two bare windings or to break
down any oxides that may have formed between them.
When you measure resistance with an ohmmeter, you are only
applying a small current of a few milliamps. This is nowhere near
enough to load the coil sufficiently to detect most problems. As a
result, most resistance checks identify intermittently shorted
injectors as being normal.
There are two methods to get around this limitation. The
first is to purchase an tool that checks injector coil windings under

3800 engines were suffering from exactly this. The point is that a
lack of detail could cause misdiagnosis.
As you might have guessed, a lab scope would not miss this.
RELATIONSHIP BETWEEN DWELL & DUTY CYCLE READINGS TABLE (1)









\









\









\









\









\









\







Dwell Meter (2) Duty Cycle Meter
1
.................................................... 1%
15 .................................................. 25%
30 .................................................. 50%
45 .................................................. 75%
60 ................................................. 100%
( 1) - These are just some examples for your understanding.
It is okay to fill in the gaps.
( 2) - Dwell meter on the six-cylinder scale.









\









\









\









\









\









\







THE TWO TYPES OF INJECTOR DRIVERS
OVERVIEW
There are two types of transistor driver circuits used to
operate electric fuel injectors: voltage controlled and current
controlled. The voltage controlled type is sometimes called a
"saturated switch" driver, while the current controlled type is
sometimes known as a "peak and hold" driver.
The basic difference between the two is the total resistance
of the injector circuit. Roughly speaking, if a particular leg in an
injector circuit has total resistance of 12 or more ohms, a voltage
control driver is used. If less than 12 ohms, a current control driver
is used.
It is a question of what is going to do the job of limiting
the current flow in the injector circuit; the inherent "high"
resistance in the injector circuit, or the transistor driver. Without
some form of control, the current flow through the injector would
cause the solenoid coil to overheat and result in a damaged injector.
VOLTAGE CONTROLLED CIRCUIT ("SATURATED SWITCH")
The voltage controlled driver inside the computer operates
much like a simple switch because it does not need to worry about
limiting current flow. Recall, this driver typically requires injector
circuits with a total leg resistance of 12 or more ohms.
The driver is either ON, closing/completing the circuit
(eliminating the voltage-drop), or OFF, opening the circuit (causing \
a
total voltage drop).
Some manufacturers call it a "saturated switch" driver. This
is because when switched ON, the driver allows the magnetic field in
the injector to build to saturation. This is the same "saturation"
property that you are familiar with for an ignition coil.
There are two ways "high" resistance can be built into an
injector circuit to limit current flow. One method uses an external
solenoid resistor and a low resistance injector, while the other uses
a high resistance injector without the solenoid resistor. See the left
side of Fig. 1.
In terms of injection opening time, the external resistor
voltage controlled circuit is somewhat faster than the voltage
controlled high resistance injector circuit. The trend, however, seems
to be moving toward use of this latter type of circuit due to its
lower cost and reliability. The ECU can compensate for slower opening

times by increasing injector pulse width accordingly.
NOTE: Never apply battery voltage directly across a low resistance
injector. This will cause injector damage from solenoid coil
overheating.
Fig. 1: Injector Driver Types - Current and Voltage
CURRENT CONTROLLED CIRCUIT ("PEAK & HOLD")
The current controlled driver inside the computer is more
complex than a voltage controlled driver because as the name implies,
it has to limit current flow in addition to its ON-OFF switching
function. Recall, this driver typically requires injector circuits
with a total leg resistance of less than 12 ohms.
Once the driver is turned ON, it will not limit current flow
until enough time has passed for the injector pintle to open. This
period is preset by the particular manufacturer/system based on the
amount of current flow needed to open their injector. This is
typically between two and six amps. Some manufacturers refer to this

will need to shift your Lab Scope to five volts per division.
You will find that some systems have slight voltage
fluctuations here. This can occur if the injector feed wire is also
used to power up other cycling components, like the ignition coil(s).
Slight voltage fluctuations are normal and are no reason for concern.
Major voltage fluctuations are a different story, however. Major
voltage shifts on the injector feed line will create injector
performance problems. Look for excessive resistance problems in the
feed circuit if you see big shifts and repair as necessary.
Note that circuits with external injector resistors will not
be any different because the resistor does not affect open circuit
voltage.
Point "B" is where the driver completes the circuit to
ground. This point of the waveform should be a clean square point
straight down with no rounded edges. It is during this period that
current saturation of the injector windings is taking place and the
driver is heavily stressed. Weak drivers will distort this vertical
line.
Point "C" represents the voltage drop across the injector
windings. Point "C" should come very close to the ground reference
point, but not quite touch. This is because the driver has a small
amount of inherent resistance. Any significant offset from ground is
an indication of a resistance problem on the ground circuit that needs
repaired. You might miss this fault if you do not use the negative
battery post for your Lab Scope hook-up, so it is HIGHLY recommended
that you use the battery as your hook-up.
The points between "B" and "D" represent the time in
milliseconds that the injector is being energized or held open. This
line at Point "C" should remain flat. Any distortion or upward bend
indicates a ground problem, short problem, or a weak driver. Alert
readers will catch that this is exactly opposite of the current
controlled type drivers (explained in the next section), because they
bend upwards at this point.
How come the difference? Because of the total circuit
resistance. Voltage controlled driver circuits have a high resistance
of 12+ ohms that slows the building of the magnetic field in the
injector. Hence, no counter voltage is built up and the line remains
flat.
On the other hand, the current controlled driver circuit has
low resistance which allows for a rapid magnetic field build-up. This
causes a slight inductive rise (created by the effects of counter
voltage) and hence, the upward bend. You should not see that here with
voltage controlled circuits.
Point "D" represents the electrical condition of the injector
windings. The height of this voltage spike (inductive kick) is
proportional to the number of windings and the current flow through
them. The more current flow and greater number of windings, the more
potential for a greater inductive kick. The opposite is also true. The
less current flow or fewer windings means less inductive kick.
Typically you should see a minimum 35 volts at the top of Point "D".
If you do see approximately 35 volts, it is because a zener
diode is used with the driver to clamp the voltage. Make sure the
beginning top of the spike is squared off, indicating the zener dumped
the remainder of the spike. If it is not squared, that indicates the
spike is not strong enough to make the zener fully dump, meaning the
injector has a weak winding.
If a zener diode is not used in the computer, the spike from
a good injector will be 60 or more volts.
Point "E" brings us to a very interesting section. As you
can see, the voltage dissipates back to supply value after the peak of
the inductive kick. Notice the slight hump? This is actually the
mechanical injector pintle closing. Recall that moving an iron core
through a magnetic field will create a voltage surge. The pintle is