2006 MERCEDES-BENZ SPRINTER automatic transmission

To avoid overfilling transmission after a fluid
change or overhaul, perform the following procedure:
(1) Verify that the vehicle is parked on a level sur-
face.
(2) Remove locking pin (1) (Fig. 152). Remove the
plate of the locking pin with a suitable tool and press
out the pin remaining in the cap downwards.
(3) Remove cap (2).
(4) Add following initial quantity of required fluid
(Refer to LUBRICATION & MAINTENANCE/FLUID
TYPES - DESCRIPTION) to transmission:
(a) If only fluid and filter were changed, add7.4
L (14.8 pts.)of transmission fluid to transmission.
(b) If transmission was completely overhauled,
torque converter was replaced or drained, and
cooler was flushed, add7.7 L (16.3 pts.)of trans-
mission fluid to transmission.
(5) Check the transmission fluid (Refer to 21 -
TRANSMISSION/AUTOMATIC - NAG1/FLUID AND
FLUID - STANDARD PROCEDURE - CHECK OIL
LEVEL) and adjust as required.
FLUID / FILTER SERVICE
(1) Run the engine until the transmission oil
reaches operating temperature.
(2) Raise and support vehicle.
(3) Remove the torque converter drain plug access
plug from the bottom of the torque converter hous-
ing.
(4) Rotate the engine clockwise until the torque
converter drain plug (8) (Fig. 153) is aligned with the
access hole.
NOTE: Clean the area around the drain plug to pre-
vent dirt from entering the torque converter.
(5) Using a suitable drain pan to catch the fluid,
remove the torque converter drain plug (8) and allow
the torque converter to drain completely.
(6) Inspect the torque converter drain plug seal (9)
(Fig. 153). Replace the seal if necessary.
(7) Install the torque converter drain plug (8).
Tighten the drain plug to 14 N´m (10 ft.lbs.).
(8) Install the torque converter drain plug access
plug into the bottom of the torque converter housing.
(9) Using a suitable drain pan to catch the fluid,
remove the transmission oil pan drain plug (6) (Fig.
153) and allow the oil pan to drain completely.
(10) Inspect the transmission oil pan drain plug
seal (7). Replace the seal if necessary.
(11) Install the transmission oil pan drain plug (6).
Tighten the drain plug to 20 N´m (15 ft.lbs.).
(12) Remove the bolts (5) and retainers (4) (Fig.
153) holding the oil pan to the transmission.
(13) Remove the transmission oil pan (3) and gas-
ket (2) from the transmission.
Fig. 152 Remove Dipstick Tube Cap Lock
1 - LOCKING PIN
2 - TUBE CAP
3 - DIPSTICK TUBE
Fig. 153 Fluid/Filter Service Points
1 - OIL FILTER
2 - OIL PAN GASKET
3 - OIL PAN
4 - RETAINER
5 - BOLT
6 - OIL PAN DRAIN PLUG
7 - SEAL
8 - TORQUE CONVERTER DRAIN PLUG
9 - SEAL
21 - 134 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATIONVA

(14) Remove the transmission oil filter (1) and
o-ring from the electrohydraulic control unit.
(15) Clean the inside of the oil pan (3) of any
debris. Inspect the oil pan gasket (2) and replace if
necessary.
(16) Install a new oil filter (1) and o-ring into the
electrohydraulic control unit.
(17) Install the oil pan (3) and gasket (2) onto the
transmission.
(18) Install the oil pan bolts (5) and retainers (4).
Torque the bolts to 8 N´m (70 in.lbs.).
(19) Lower the vehicle and add 7.0 L (7.4 qts.) of
transmission fluid to the transmission.
(20) Check the oil level (Refer to 21 - TRANSMIS-
SION/AUTOMATIC - NAG1/FLUID AND FILTER -
STANDARD PROCEDURE - CHECK OIL LEVEL).
FREEWHEELING CLUTCH
DESCRIPTION
Freewheeling clutches (Fig. 154) are installed in
the front planetary gear set between the sun gear
and the stator shaft, and in the rear planetary gear
set between the sun gear and the intermediate shaft.
The freewheel consists of an outer race (4), an
inner race (7), a number of locking elements (3) and
a cage (6) for these locking elements.
OPERATION
The freewheeling clutch (Fig. 155) optimizes indi-
vidual gearshifts. They lock individual elements of a
planetary gear set together or against the transmis-
sion housing in one direction of rotation to allow the
torque to be transmitted.
If the inner race (7) of the freewheeling clutch is
locked and the outer race (4) turns counter-clockwise
(1), the locking elements (3) adopt a diagonal position
on account of their special contours, allowing the
freewheel function. The inner race (4) slides under
the locking elements (3) with minimal friction. If the
rotation of the outer race (4) changes to clockwise (2),
the locking elements (3) stand up and lock the outer
and inner races (4, 7) together.
Fig. 154 Freewheeling Clutch
1 - ROTATION DIRECTION ªA9
2 - ROTATION DIRECTION ªB9
3 - LOCKING ELEMENTS
4 - OUTER RACE
5 - FRONT OR REAR SUN GEAR
6 - LOCKING ELEMENT CAGE
7 - INNER RACE
Fig. 155 Freewheeling Clutch
1 - ROTATION DIRECTION ªA9
2 - ROTATION DIRECTION ªB9
3 - LOCKING ELEMENTS
4 - OUTER RACE
5 - FRONT OR REAR SUN GEAR
6 - LOCKING ELEMENT CAGE
7 - INNER RACE
VAAUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 135

DISASSEMBLY
(1) Remove retaining ring (5) (Fig. 156) from hol-
low shaft (1).
(2) Remove rear sun gear (4) with the K3 inter-
nally toothed disk carrier and rear freewheeling
clutch F2 (3).
(3) Remove snap-ring (2) (Fig. 156) for freewheel.
(4) Press freewheeling clutch (3) out of sun gear.
(5) Check O-rings (6), replace if necessary.
Fig. 156 Freewheeling Clutch F2
1 - HOLLOW SHAFT 4 - K3 INNER DISC CARRIER AND REAR PLANETARY SUN
GEAR
2 - F2 CLUTCH SNAP-RING 5 - RETAINING RING
3 - FREEWHEELING CLUTCH F2 6 - O-RINGS
21 - 136 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATIONVA

(6) Check the anti-friction bearing (2) (Fig. 157) in
the rear planetary sun gear for damage. Replace as
necessary.
Fig. 157 Freewheeling Clutch F2 Anti-Friction
Bearing
1 - K3 INNER DISC CARRIER AND REAR PLANETARY SUN
GEAR
2 - ANTI-FRICTION BEARING
3 - FREEWHEELING CLUTCH F2
VAAUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 137

ASSEMBLY
NOTE: The side of the freewheeling clutch F2 (3)
with the markings (directional arrow, part number,
etc.) must be up when the clutch is installed in the
sun gear (4).
(1) Press freewheeling clutch F2 (3) (Fig. 158) into
sun gear (4).
(2) Install snap-ring (2) for freewheeling clutch.
(3) Check O-rings (6) (Fig. 158) on hollow shaft,
replace if necessary.
(4) Install rear sun gear (4) with K3 internally
toothed disc carrier and rear freewheeling clutch (3)
onto the hollow shaft.
(5) Verify proper operation of the freewheeling
clutch F2. When the assembly is held with the F2clutch snap-ring upward, it should be possible to
rotate the hollow shaft counter-clockwise.
(6) Install retaining ring (5) onto hollow shaft (1).
GEARSHIFT CABLE
DIAGNOSIS AND TESTING
GEARSHIFT CABLE
(1) The floor shifter lever and gate positions
should be in alignment with all transmission PARK,
NEUTRAL, and gear detent positions.
(2) Engine starts must be possible with floor shift
lever in PARK or NEUTRAL gate positions only.
Fig. 158 Freewheeling Clutch F2
1 - HOLLOW SHAFT 4 - K3 INNER DISC CARRIER AND REAR PLANETARY SUN
GEAR
2 - F2 CLUTCH SNAP-RING 5 - RETAINING RING
3 - FREEWHEELING CLUTCH F2 6 - O-RINGS
21 - 138 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATIONVA

Engine starts must not be possible in any other gear
position.
(3) With floor shift lever handle push-button not
depressed and lever in:
(a) PARK position - Apply forward force on cen-
ter of handle and remove pressure. Engine starts
must be possible.
(b) PARK position - Apply rearward force on cen-
ter of handle and remove pressure. Engine starts
must be possible.
(c) NEUTRAL position - Normal position. Engine
starts must be possible.
(d) NEUTRAL position - Engine running and
brakes applied, apply forward force on center of
shift handle. Transmission shall not be able to shift
from NEUTRAL to REVERSE.
REMOVAL
(1) Move selector lever to position ªDº.
(2) Remove top (3) (Fig. 159) of the center section
of instrument panel.(3) Remove bottom (2) (Fig. 160) of the center sec-
tion of instrument panel.
(4) Pry ball socket of transmission shift cable off
ball knob at the shift lever assembly (SLA). Use a
suitable slotted screwdriver.
(5) Raise and support vehicle.
(6) Detach shift cable (1) at transmission.
(a) Unlatch ball socket latch (Fig. 161) of cable.
(b) Unclip shift cable retainer from retainer
bracket. When pulling out cable, press together
hooks of shift cable retainer at the points shown
(arrows).
Fig. 159 Remove Top Section Of Center Instrument
Panel
1 - SHIFT LEVER ASSEMBLY FRAME TRIM
2 - STORAGE COMPARTMENT
3 - TOP CENTER PART OF INSTRUMENT PANEL
4 - SCREW
5 - PLUG CONNECTIONS
6 - ASHTRAY
Fig. 160 Remove Bottom Section Of Center
Instrument Panel
1 - SCREW
2 - BOTTOM CENTER PART OF INSTRUMENT PANEL
Fig. 161 Remove Shift Cable From Transmission
1 - SHIFT CABLE
2 - TRANSMISSION SHIFT LEVER
VAAUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 139

(c) Pull shift cable out of ball socket. Ball socket
can remain on transmission lever (2).
(7) Remove the shift cable grommet from the dash
panel.
(8) Remove the shift cable from the vehicle.
INSTALLATION
(1) Pass the shift cable through the opening in the
dash panel and seat the shift cable grommet into the
hole.
(2) Install the shift cable (1) (Fig. 162) to the
transmission.
(a) Push shift cable onto the transmission shift
lever (2) ball socket.
(b) Latch ball socket latch of cable.
(c) Clip shift cable retainer into retainer bracket.
(3) Lower vehicle.
(4) Install the transmission shift cable onto the
ball knob at the SLA.
(5) Install the bottom section (2) (Fig. 163) of the
center section of instrument panel.
(6) Install the top section (3) (Fig. 164) of the cen-
ter section of instrument panel.
(7) Verify repair.
Fig. 162 Install Shift Cable Onto Transmission
1 - SHIFT CABLE
2 - TRANSMISSION SHIFT LEVER
Fig. 163 Install Bottom Section Of Center
Instrument Panel
1 - SCREW
2 - BOTTOM CENTER PART OF INSTRUMENT PANEL
Fig. 164 Install Top Section Of Center Instrument
Panel
1 - SHIFT LEVER ASSEMBLY FRAME TRIM
2 - STORAGE COMPARTMENT
3 - TOP CENTER PART OF INSTRUMENT PANEL
4 - SCREW
5 - PLUG CONNECTIONS
6 - ASHTRAY
21 - 140 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATIONVA

HOLDING CLUTCHES
DESCRIPTION
Three (Fig. 165) multiple-disc holding clutches, the
front, B1 (1), middle, B3 (4), and rear multiple disc
clutches, B2 (5), are located in the planetary gear
sets in the transmission housing.
A multiple-disc holding clutch consists of a number
of internally toothed discs (10) on an internally
toothed disc carrier and externally toothed discs (9)
on an externally toothed disc carrier, which is rigidly
connected to the transmission housing.
Fig. 165 Holding Clutches
1 - B1 CLUTCH 10 - CENTER PLANETARY GEARSET ANNULUS GEAR
2 - EXTERNALLY TOOTHED DISC 11 - CENTER PLANETARY GEARSET PINION GEARS
3 - INTERNALLY TOOTHED DISC 12 - CENTER PLANETARY GEARSET SUN GEAR
4 - B3 CLUTCH 13 - FRONT PLANETARY GEARSET PINION GEARS
5 - B2 CLUTCH 14 - FRONT PLANETARY GEARSET SUN GEAR
6 - B3 CLUTCH PISTON 15 - B1 CLUTCH INTERNALLY TOOTHED DISC CARRIER
7 - B2 CLUTCH PISTON 16 - B1 CLUTCH PISTON
8 - B2 CLUTCH INTERNALLY TOOTHED DISC CARRIER 17 - B1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER
9 - REAR PLANETARY GEARSET PLANETARY CARRIER
VAAUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 141