transmission oil MERCEDES-BENZ ML320 1997 Complete Repair Manual

BT27.40-P-0003-01A
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

P27.40-2027-01

To avoid malfunctions from metal particles, a magnet is placed in the oil pan.


The magnet can be retrofitted in the field.

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BT27.20-P-0001-01A
Oil drain plug on torque converter deleted
Transmission 722.6
k

TRANSMISSION
722.6## /6## ## as of 1772285 as of 22.9.99

For reasons of cost, the oil drain plug on the torque converter has

been deleted for all transmission variants.

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BT27.10-P-0006-01W
Oil pan and overflow tube modified

k

TRANSMISSION
722.901

P27.10-2139-06

To improve fluid supply to the transmission,

the transmission oil pan and the overflow tube

have been redesigned.

The characteristic sloped surface (arrow) can

be used to identify the new oil pan (1). This oil

pan configuration should be installed only

together with the white overflow tube (2).

The fluid temperatures used as references for

checking and refilling are different with the

new components.

Whenever a transmission is removed for repairs, the earlier oil pan (3) with the black overflow

tube (4) should be replaced by the new sloped-surface version (1) with the white overflow tube
(2).

P27.10-2140-03

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AR03.10-P-7311BV
Remove/install piston rings
2.7.97

ENGINE
113 in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230

ENGINE
112 /945, 113.962 /982

P03.10-2022-06

1
Compression ring (plain compression

ring)

2
Compression ring ( taper-faced hook

scraper ring)

3
Oil scraper ring

4
Piston

5
Piston crown

Fig. item, etc.

Work instructions

4
Remove/install pistons

AR03.10-P-7021AV

1, 2, 3
Piston rings
transmission


Pliers

*000589513700


Removal:

Oil scraper ring
with the pliers.

The oil scraper ring (3)
must be removed and

installed by hand.


Installation:
Compression rings
-
Measure width of compression rings (1, 2).

*BE03.10-P-1003-05B

-
Pay attention to installation position of

compression rings (1, 2). The inscription


"Top" or the manufacturer's designation
must
point toward the piston crown (5).

1, 2
Measure the side clearance of the

compression rings

AR03.10-P-7311-01V

1, 2
Measure end gap of the compression rings

AR03.10-P-7311-02V

Test values for piston rings

Number

Designation
Engine 112.910/

911/912
Engine 112.913
Engine 112.920/

921/922/923/940/
941/942/943/944/
945/946/947/948/

960,

113.940/941/942/

943

BE03.10-P-1003-05B
Dimension
Plain compression ring
mm
83.2 X 1.5 X 3.189.9 X 1.5 X 3.189.9 X 1.5 X 3.1

Taper-faced hook

scraper ring
mm
83.2 X 3.5 X 3.5
89.9 X 1.75 X 3.5
89.9 X 3.5 X 3.5

Test values for piston rings

Number

Designation
Engine 112.949

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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

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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

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