Page 353 of 2492
AUTOMATIC TRANSMISSION
Use
23
DRIVING
The automatic transmission is lubricated under
pressure and therefore this only occurs if the en-
gine is running.
As a result, and with the risk of serious damage,
the following instructions must be complied with:
- never drive with the ignition off
(going down-
hill for example), we cannot stress enough how
dangerous this practice is.
- never push a vehicle (eg. : to reach a petrol
pump), except by following the instructions in
the "Towing" paragraph.
In addition, the vehicle is only driven if the engine
is running. It is therefore impossible to start the
engine of a vehicle with automatic transmission
by pushing it.
TOWING
In all cases, it is preferable to tow the vehicle on a
trailer or with the front wheels off the ground.
However, if this is not possible, the vehicle can be
towed at a speed below 25 mph (40 km/
h and
over a maximum distance of 30 miles (50 km) (le-
ver in N).
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AUTOMATIC TRANSMISSION
Identification
23
* For identifying with the XR25 test kit, see MR TA.A.
Gear ratios
Gear 1st 2nd 3rd 4th Reverse
Gear reduction2.71 1.55 1 0.68 2.11
Overall reduction10.35 5.92 3.82 2,6 8.06
Speed in km/h at 1000 rpm. with
1.76 m tyres10.19 17.83 27.66 40.79 13.11
VEHICLETRANS-
MISSION
TYPE ENGINE CONVERTERSTEP
DOWNRATIO SPEEDOELECTRONIC
UNIT*
BA0 AD4 013 K7M 227 69/77 19/65 22/20 114
23-3
Page 355 of 2492
VEHICLES
AUTOMATIC TRANSMISSION
Gear change thresholds
23
The figures given in the table represent the average theoretical speed values for changing gear in km/h
tolerances = ± 10 %.
PL: No load.
PF: Full load.
RC: Kickdown (changing to a lower gear).
A: Gear change thresholds are set lower down. Gears change at a lower speed. Switch (1) is not activated
and the warning light EXC is extinguished.
B: Gear change thresholds are set higher up. Gears change at a higher speed. Switch (1) is activated and the
warning light
EXC is illuminated.
1 22 33 44 33 22 1
ABABABABABAB
5059PL
ACCELER-
ATOR
POSITION
TRANS-
MISSION TYPE
BA0AD4PF
RC
4149
52
7695
96
126149
158
10712765812832
162040466473
14690
7153234
48
98597R
23-4
Page 356 of 2492
AUTOMATIC TRANSMISSION
Consumables
23
Parts to be replaced after they have been
removed :
- roll pin,
- lock nuts,
- copper seals.
AD4 automatic transmission uses two grades of oil and has two levels.
MECHANISM : ELF RENAULTMATIC D2 (D20104).
In emergency, use:
- MOBIL ATF 220 D (D 20104 or D 21412).
-
TEXAMATIC 4011.
FINAL DRIVE: TRANSELF TRX 75W 80W.
DESCRIPTION COMPONENT AFFECTED
RHODORSEAL 5661
(Eg : CAF 4/60 THIXO)
Seals the driveshaft pins
MOLYKOTE BR2 grease
- Sunwheel splines
- Converter centrer
Loctite FRENBLOCBrake caliper mounting bolt
Parts to be systematically replaced
Oil
23-5
Page 357 of 2492

AUTOMATIC TRANSMISSION
Oil change frequencies
23
The mechanism is drained during the major service.
The oil level must be checked every 10000 miles (15 000 km) in case there is a slight oil leak.
The final drive is never drained ; it is filled for life.
The strainer is no longer replaced (NT 2261A).
Only the level may change due to a slight leak.
Oil capacity
NOTE :if the automatic transmission is replaced, only check the oil level since the transmission is supplied by
the Parts Department full of oil.
TOTAL volume
MECHANISM
5.7 l
FINAL DRIVE1 l
Fault warning light
MESSAGE FROM THE ELECTRONIC FAULT
WARNING LIGHT
Normal operation :
• The warning light is not illuminated during
normal operation whether the vehicle is being
started, engine running or when the vehicle is
stationary.
Presence of a fault :
• Vehicle stopped, engine running, or when
driving, warning light permanently illuminated
• Vehicle moving, warning light illuminates and
extinguishes without action at the ignition key.
• Vehicle moving, warning light illuminates
briefly.Oil temperature < - 20 °C or > + 140 °C
• Vehicle moving or stationary, warning light
flashes at a rate of approximately 1 flash per
second, in this case, reduce the performance
requirement by moderating acceleration.
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AUTOMATIC TRANSMISSION
Draining
23
DRAINING
Mechanism :
Mechanism sump with two plugs:
A: Top-up plug.
B: Drain plug (triangular socket).
Draining is performed by removing plug (B).
SPECIAL TOOLING REQUIRED
B.Vi.1213Automatic transmission drain
spanner
MS 1019-10XR25 test kit
Final drive:
Filling and topping up are performed through
plug (C) which overflows when the level is
exceeded.
Reminder:
The final drive is never drained, it is filled for life.
94882R2
94882R
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Page 359 of 2492

Oil pressure
Before starting:
- if the gearbox has been drained, fill it with 3.5
litres of oil,
- if you are simply checking the level, you must
add 0.5 litre of the recommended type of oil.
1-Vehicle on a 4 post lift, transmission at am-
bient temperature.
2-Start the engine with the selector lever in the
Park position.
3-Connect the
XR25 test kit and enter:
D14then
#0 4
4-Raise the vehicle and allow the engine to run
until it reaches a temperature of 60 °C.
5-When the desired temperature has been rea-
ched, open the top-up plug; allow the excess
oil to overflow (must be more than 0.1 litre)
for approximately 20 seconds. Replace the
plug
6-If the volume of oil which flowed out is less
than 0.1 litre, the level is not correct. Repeat
the operation.
In this case, add 1 litre of the recommended oil
and allow the transmission to cool down between
successive operations.
AUTOMATIC TRANSMISSION
Filling - Levels
23
FILLING - TOPPING UP
Filling is performed though tube (D).
Use a funnel fitted with a 15/100 filter so as to
prevent any impurities entering.
The level
MUST be checked in accordance with the
following method:
94845R1
The transmission is fitted with an oil pressure
take-off. Connect the B.Vi. 1215 to check the
automatic transmission pressure sensor only.
The oil pressure cannot be altered.
Its value is determined by the electronic compu-
ter.
94845-1R
23-8
Page 360 of 2492

Strainer mounting bolts 0.5
Sump mounting bolts1
Mounting bolts for engine mounting
dampers on side member2
Rear support mounting bolts6.5
Wheel bolts9
Strainer mounting bolts0.5
Distributor mounting bolts0.5
AUTOMATIC TRANSMISSION
Hydraulic Distributor
23
REMOVAL
Put the vehicle on a 2 post lift.
Put the lever in the "P" (Park) position.
Drain the automatic transmission (mechanismsec-
tion;
drain plug with triangular socket).
Remove:
- the expansion bottle,
- the air filter,
- the two upper bolts (A) of the engine moun-
ting damper and slacken the other two (B), wi-
thout removing them.
TIGHTENING TORQUES (In daN.m)For versions with ABS
Remove the mounting nut (C) from the ABS
electro-pump assembly on the rubber mounting.
Remove the front left hand wheel and remove the
plastic shield from the wheel arch (in order to be
able to remove the two rear mounting bolts of
the automatic transmission sump at a later stage).
Using the component jack, raise the automatic
transmission.
94933-1R
94933R
94887S
23-9