1997 MERCEDES-BENZ ML320 automatic transmission oil

BT27.00-Z-9999AZ
Technical modifications: Passenger cars: Automatic transmission
30.4.97

MODEL all

Vacuum unit for modulating pressure modified
TRANSMISSION 722.3 /5 as of 15.8.92

BT27.10-P-0001-01A

Secondary pump dispensed with
TRANSMISSION 722.5## ## as of 3652931

BT27.10-P-0002-01A

Control pressure cable with vacuum actuators

standardized
TRANSMISSION 722.3 /4 /5 as of 1.7.93

BT27.10-P-0003-01A

Sump volume modified
TRANSMISSION 722.7## ## as of 0054011

as of 29.7.99

BT27.10-P-0004-01A

Additional shim between deep-groove ball

bearing and output flange
TRANSMISSION 722 ...

BT27.10-P-0005-01A

Oil pan and overflow tube modified
TRANSMISSION 722.901

BT27.10-P-0006-01W

Retaining lug added to electrohydraulic

control module
TRANSMISSION 722.6## # as of 0026195

BT27.19-P-0001-01A

Caps for solenoid valve, new
TRANSMISSION 722.6 as of 1.8.97

BT27.19-P-0003-01A

Oil drain plug on torque converter deleted
TRANSMISSION 722.6## /6## ## as of

1772285 as of 22.9.99

BT27.20-P-0001-01A

Small intermediate plate modified
TRANSMISSION 722.5## ## as of 3987361

as of 15.3.94

BT27.35-P-0001-01A

Installation of a pressure feed valve
TRANSMISSION 722.6## # as of 0027083

BT27.35-P-0002-01A

Primary pump non-return valve dispensed with
TRANSMISSION 722.5## ## as of 3652931

BT27.35-P-0003-01A

Strainer for modulating pressure and shift

pressure control solenoid valve, new
TRANSMISSION 722.6## ## as of 0538312

BT27.35-P-0004-01A

Strainer in inlet to converter lock-up control

solenoid valve, newTRANSMISSION 722.6## ## as of 0485895

BT27.35-P-0005-01A

Feed B1 enlarged
TRANSMISSION 722.5 as of 15.8.91

BT27.40-P-0001-01A

Fluid reservoir deleted
TRANSMISSION 722.7## ## as of 0111673

as of 11.9.00

BT27.40-P-0002-01A

Magnet in oil pan, new part
TRANSMISSION 722.6## ## as of 2871384

as of 17.4.01, 722.7## ## as of 0153700 as

of 9.7.01

BT27.40-P-0003-01A

Piston B1 modified
TRANSMISSION 722.5## ## as of 3746852

as of 15.6.92, 722.3## ## as of 3969172

BT27.50-P-0002-01A

Plain bearing of input shaft changed to an anti-

friction bearing
TRANSMISSION 722 ...

BT27.50-P-0002-02A

One-way valve dispensed with
TRANSMISSION 722.5## ## as of 3652931

BT27.50-P-0007-01A

Outer multiple-disc carrier B1 modified
TRANSMISSION 722.6## # as of 0005900

BT27.50-P-0008-01A

Peak-to-valley height on piston B2 modified
TRANSMISSION 722.6## # as of 0023104

BT27.50-P-0009-01A

Piston B2 changed
TRANSMISSION 722.6## ## as of 0552036

as of 1.8.97

BT27.50-P-0010-01A

Friction bearing in sun wheel of rear planet

gear set converted to anti-friction bearing
TRANSMISSION 722 ...

BT27.50-P-0011-01A

Conversion from 18° to 23° gearing in front

and rear planetary gear system
TRANSMISSION 722 ...

BT27.50-P-0012-01A

Multi-disks for B1, K1 and K3 changed
TRANSMISSION 722.6## ## as of 3947440

as of 2.9.02

BT27.50-P-0013-01A

Thickness of friction and steel disks K3

changed
TRANSMISSION 722.6

BT27.51-P-0001-01A

Thickness of steel plates of B1, K1 and K2

modified
TRANSMISSION 722.6## ## as of 1596205

as of 15.6.99

BT27.51-P-0002-01A
Additional dished washer in multi-plate set K2
TRANSMISSION 722.6## ## as of 1596205

as of 15.6.99

BT27.51-P-0003-01A

Center shift modified
TRANSMISSION 722.6

BT27.60-P-0001-01A

Deletion shift lock cable ignition lock to

transmission
TRANSMISSION 722.7 in MODEL

WDB168.### ## as of 548031 as of 10.1.01

BT27.60-P-0001-02A

Selector lever soldered
TRANSMISSION 722.6 as of 1.5.96

BT27.60-P-0002-01A

Deletion of lever for shift lock cable ignition

lock at transmission
TRANSMISSION 722.700 ## as of 0129631

as of 24.1.01, 722.701 ## as of 0132072 as

of 8.2.01

BT27.60-P-0003-01A

Copyright DaimlerChrysler AG 28.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

2.1
Detach automatic transmission from engine
Models 463.206/ 209/ 232/ 233/ 240/ 241

AR27.10-P-0500BD

Models 463.243/ 244/ 245/ 246/ 247/ 248/

249/ 250/ 254

AR27.10-P-0500GA

Model 230.475

AR27.10-P-0500R

Model 230.474

Model 220 without 4MATIC

AR27.10-P-0500I

Model 220 with 4MATIC

AR27.10-P-0500IW

Models 129, 170, 202, 208, 210

AR27.10-P-0500B

Model 203 without 4MATIC, 209 with Engine

112,113

AR27.10-P-0500P

Model 203 with 4MATIC

AR27.10-P-0500PW

Model 211.061/065/070

AR27.10-P-0500T

Model 163

AR27.10-P-0500GH
2.2
Detach manual transmission from engine
Models 129, 202, 210

AR26.10-P-0020A
Models 203, 209 with Engine 112
AR26.10-P-0020P

Model 211.061

AR26.10-P-0020T

Model 208 with transmission 716.662/622

AR26.10-P-0020E

Model 170,

Model 208 with transmission 716.663

AR26.10-P-0020D

3
Detach top part of oil pan
Models 463.206/ 209/ 232/ 233/ 240/ 241/

243/ 244/ 245/ 246/ 247/ 248/ 249/ 250/ 254

AR01.45-P-7500FG

Model 230.474/
AR01.45-P-7500R

Model 220 without 4MATIC

AR01.45-P-7500I

Model 220 with 4MATIC

AR01.45-P-7500IW

Model 210 with 4MATIC

AR01.45-P-7500FA

Model 210 without 4MATIC

AR01.45-P-7500F

Models 202, 208

AR01.45-P-7500FC

Model 203 without 4MATIC, 209 with Engine

112,113

AR01.45-P-7500PV

Model 203 with 4MATIC

AR01.45-P-7500PW

Models 211.061/065/070

AR01.45-P-7500TV

Model 170

AR01.45-P-7500SV

Model 163

AR01.45-P-7500FB

Model 129

AR01.45-P-7500FD

4
Take off cylinder head

Remove intake manifold with complete

wiring loom during this step.

Models 463.206/ 209/ 232/ 233/ 240/ 241/

243/ 244/ 245/ 246/ 247/ 248/ 249/ 250/ 254

AR01.30-P-5800GV

Engine 112 in model 129 and engine 113 in

models 129, 202, 208, 210

AR01.30-P-5800B

Engine 112 in models 170, 202, 208, 210,

220 and engine 113 in models 220,

230.474 /475

AR01.30-P-5800BA

Model 163

AR01.30-P-5800MV

Models 203, 209 with engine 112, 113

Models 211.061/065/070

AR01.30-P-5800PV

5
Remove oil pump

Push back chain tensioner for this step

and take off chain.

All except models 203, 209, 211.061/065/070,

220 without 4MATIC, 230.474 /475

AR18.10-P-6020B

Model 203 without 4MATIC, 209,

211.061/065/070

AR18.10-P-6020PV

Model 203 with 4MATIC, model 220 with

4MATIC

AR18.10-P-6020PW

Model 230.474/475

AR18.10-P-6020R

6
Remove conrod bearing cap (5)

For this step, mark conrod (4) and

connecting rod bearing cap (5) on one side

relative to each other.

7
Remove conrod (4) together with pistons (3)

by lifting up and out

If pistons have been used (3), the arrows

indicating the direction of the travel and the

markings on the pistons may no longer be

visible due to carbon deposits. For this

reason, remove the carbon deposits from the

pistons. If the arrows indicating direction of
travel on the pistons are no longer

recognizable, these must be re-marked.

8
Remove circlip (1) of piston pin (2)

Do not damage piston (3). Place a clean

cloth underneath.

9
Press out piston pin (2)


Installing

10
Assign piston (3) to cylinder bore

AR03.10-P-7021-02BV

Copyright DaimlerChrysler AG 20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 2

3.1
Remove viscous fan (1)

Engine 112.942 /970 and 113.942.

Right-hand thread!

AR20.40-P-5660C

3.2
Remove electric fan

Only Engine 113.965 /981.

AR20.40-P-5000GH
4.1
Pull off plate clamps of fan shroud (2)

Only for Engine 112.942, from 5/98.

5.1
Remove fan shroud (3)

Only for Engine 112.942 /970 und

113.942. Unscrew the bolts at bottom of fan

shroud for this step


Installation:
If installing a new radiator

with integral power steering pump oil cooler, a

new fan shroud is required if a radiator

without integral oil cooler was previously
installed.

6
Remove headlamp (7).

AR82.10-P-4730GH

7
Remove radiator crossmember (8)

AR62.30-P-2300GH

8
Detach coolant line (4, 6) and expansion

reservoir coolant line (5) at the radiator


Installation:
Replace the hose clamps on

the radiator fitting for the coolant hose, as

they could cause damage to the screw/thread.

Hose clamp

*BA20.20-P-1004-01A

9
Remove the rubber seal on radiator (9)

10.1
Remove oil line (return line of radiator
!

power steering pump expansion reservoir)

(18) and oil line (feed line of steering gear

!

radiator) (19)

From 5/98 only, seal off the connections.

Set of plugs

*129589009100

11
Unscrew ATF lines (10) at the radiator

Seal off the connections.


*BA20.20-P-1001-01A


*BA20.20-P-1003-01A

Set of plugs

*129589009100

12.1
Detach the connector from the fan and
remove the fan grille (11)

Only for Engine 112.942 /970 and 113.942.

13
Unscrew the condenser from the radiator
Do not disconnect the lines.

14
Remove fasteners (20) and damper rubber

(21)

The damper rubber (21) is designed to

prevent possible vibrations between the

condenser and radiator (15) during off-road

driving.

15
Remove air conditioning system fluid

reservoir (14) from the radiator

Place aside with the lines connected.

Detach the condenser from the radiator.

16
Remove radiator (15)

When installing, the spigots on the

radiator must be inserted in the rubber

grommets in the bottom crossmember.

Installation:
On Model 163.154 with

Engine 112.942 before VIN end number

043553, when installing a new radiator with

integral power steering pump oil cooler,

additional operations are required, if they

have not already been carried out:

#
v

Retrofit the bracket for the oil cooler line of

the power steering pump

SM46.30-P-0002A

k

Radiator with integral oil cooler for the power

steering pump

BT20.20-P-0001-01A

17
Detach air guides (12)

Replace the clamps on air guides (13).

18
Install in the reverse order

19
Pour in coolant

AR20.00-P-1142HA

20
Check the headlamp setting and correct if

necessary

e

Check and adjust the headlamp setting

AP82.10-P-8260GH

Danger!

Risk of accident
caused by vehicle starting

off when engine is running.
Risk of injury


caused by contusions and burns when

working in engine during starting procedure
Secure the vehicle to prevent it from moving.
Wear closed and snug-fitting work clothes.

Do not grasp hot or rotating parts.

AS00.00-Z-0005-01A

21
Check the oil level in the automatic

transmission and correct if necessary

AR27.00-P-0101A

22
Check the cooling system for leaks

AR20.00-P-1010HA


Radiator, coolant hoses

Copyright DaimlerChrysler AG 12.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 2