1997 MERCEDES-BENZ ML320 engine

Always keep new timing chain (1) meshed with the camshaft sprocket. Pull out the free end of the
timing chain (4) steadily corresponding with the drawing in of the new timing chain (1).
3. Remove the assembly link (3) and place the old timing chain (2) to the side.
Fig. 34: Locating Assembly Link & Timing Chain

4. Cover the timing case recess with a clean cloth.
Parts which have dropped into the ti ming case recess, must be removed.
5. Connect both ends of the new timing chai n (1) with the new riveted link (5).
While inserting the new riveted link (5) ensure that the center plate (6) is also installed.
Fig. 35: Identifying Chain Ri veted Link And Center Plate

REPLACING TIMING CHAIN - AR05.10-P-7601AA

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 27 © 2006 Mitchell Repair Information Company, LLC.

ENGINE 112,113 / (except, 113.995) Only for vehicles with Elektrolufter
Fig. 36: Identifying Timing Chain Components

Removing
Risk of explosion caused
by oxyhydrogen gas. Risk
of poisoning and caustic
burns caused by
swallowing battery acid.
Risk of injury caused by
burns to skin and eyes
from battery acid or when
handling damaged lead-
acid batteriesNo fire, sparks, open flames
or smoking. Wear acid-
resistant gloves, clothing
and safety glasses. Only
pour battery acid into
suitable and appropriately
marked containers.AS54.10-Z-0001-01A
1Disconnect battery
ground cableDo not connect quiescent
current retention device
otherwise this may cause
damage to the control unit.
Model 203AR54.10-P-0003P
Models 129, 163, 170, 202,
208, 210AR54.10-P-0003A
Model 209AR54.10-P-0003Q

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 28 © 2006 Mitchell Repair Information Company, LLC.

Models 211.061/065/070AR54.10-P-0003T
Model 215, 220AR54.10-P-0003I
Model 230.474 /475AR54.10-P-0003R
All models 463 except
463.241/248 with code 979.AR54.10-P-0003G
Model 463.241 with code
979AR54.10-P-0003PV
Model 463.248 with code
979AR54.10-P-0003PM
Notes on batteryAll modelsAH54.10-P-0001-01A
2Remove spark plugsTo ensure that the engine
can be easily cranked when
drawing in the timing chain,
and to avoid the timing
chain jumping across.
Remove only once spark
plug of each cylinder.
Replace spark plugsModel 163AP15.10-P-1580GH
Models 220, 230.474/475AP15.10-P-1580AB
Models 210, 208, 202AP15.10-P-1580A
Models 203, 170, 209, 211
with engine 112
Models 209, 211 with
engine 113
3Remove cylinder head
coversAir filter mounted on
vehicleAR01.20-P-5014B
Air filter mounted on
engineAR01.20-P-5014BV
4.1Remove fan shroud Not models
211.061/065/070, 230.475
Models 220, 230.474
AR20.40-P-6800AB
4.2Remove electric fanModel 170AR20.40-P-5000SV
Models 203, 209AR20.40-P-5000PV
Model 163.174AR20.40-P-5000GH
5Position engine to 40°
after TDC of first
cylinder. Engine must not be
cranked backwards. The
notches of the camshafts
must be pointing in the
direction of the inner V.
It must be possible to easily
insert the two locking
plates.
If this is not possible: ?
Set the basic position of AR05.20-P-6020AU

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 29 © 2006 Mitchell Repair Information Company, LLC.

camshafts
The copper plates of the
timing chain must be
aligned with the scribe
marks on the camshaft
sprockets.
Owing to the unevenly long
paths of the timing chain it
may be necessary to crank
the engine as many as 14
times till the copper plates
get aligned with the scribe
marks on the camshaft
sprockets.
On vehicles equipped
with an air pump, the
combination valve must be
unbolted before the right
locking plate is inserted.
Installation: Replace
combination valve gasket.
*BA09.20-P-1001-01D
Locating plateFig. 11
Locating plateFig. 12
Timing chain drive -
generalEngines 112, 113GF05.10-P-9611-01C
6Remove chain tensionerModels 163.174, 215, 220
Models 170, 202, 203,
208.365/465
Models 209, 210,
211061/065/070
Model 230.474 with engine
113.992AR05.10-P-7800CA
7Remove camshaft
position sensor AR15.10-P-2000A
8Crank engine in direction
of rotation until the link
for separating the timing
chain is easily accessible The separation point for
the timing chain is one link
down from the copper tab
(right).
See new timing chain.
9Remove camsha ft bearing
bridge on rightEngine 112, 113AR05.20-P-7103AU
Engine 113.960 with code
(479) Cylinder shutoffAR05.20-P-7103AV
10Install holding bush (3)
onto camshaft on right Only insert bolts (4)
until they make contact. Fig. 40

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 30 © 2006 Mitchell Repair Information Company, LLC.

Holding bush
11Bolt on holding devices
(1, 2) for timing chain at
right and left cylinder
heads RetainerFig. 39
12Disconnect timing chain Cover over timing case
recess with a clean cloth.
Parts which have dropped
into the timing case recess,
must be removed.
To pull out the old
timing chain, connect the
old chain to the new timing
chain.AR05.10-P-7601-01AV
Install
13Draw in new timing chain Pull in the new timing
chain by turning the
crankshaft in its standard
direction of rotation.AR05.10-P-7601-04AV
Assembly linksFig. 32
CaseFig. 16
14Remove retaining devices
(1, 2) for timing chain at
right and left cylinder
head RetainerFig. 39
15Rivet new timing chain AR05.10-P-7601-02AV
16Crank engine in direction
of rotation
17Check timing of engine AR05.10-P-6858V
18Take off holding bush (3)
on right camshaft Holding bushFig. 40
19Install camshaft bearing
bridge on rightEngines 112, 113AR05.20-P-7103AU
Engine 113.960 with code
(479) Cylinder shutoffAR05.20-P-7103AV
20Install camshaft position
sensor AR15.10-P-2000A
21Installing chain tensionerModels 163.174, 215, 220
Models 170, 202, 203,
208.365/465
Models 209, 210,
211061/065/070
Model 230.474 with engine
113.992AR05.10-P-7800CA
22.1Install fan shroud Not model AR20.40-P-6800AB

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 31 © 2006 Mitchell Repair Information Company, LLC.

Intake manifold
211.061/065/070, 230.475
Models 220, 230.474
22.2Install electric fanModel 170AR20.40-P-5000SV
Models 203, 209AR20.40-P-5000PV
Model 163.174AR20.40-P-5000GH
23Install cylinder head
coversAir filter locat ed at vehicle
side.AR01.20-P-5014B
Air filter locat ed on engine
side.AR01.20-P-5014BV
24Install spark plugs
Replace spark plugsModels 220, 230.474/475AP15.10-P-1580AB
Models 210, 208, 202AP15.10-P-1580A
Models 170, 203, 209, 211
with engine 112
Models 209, 211 with
engine 113
Model 163AP15.10-P-1580GH
25Connect ground cableModel 203AR54.10-P-0003P
Models 129, 163, 170, 202,
208, 210AR54.10-P-0003A
Model 209AR54.10-P-0003Q
Models 211.061/065/070AR61.20-P-1105T
Model 215, 220AR54.10-P-0003I
Model 230.474/475AR54.10-P-0003R
All models 463 except
463.241/248 with code 979AR54.10-P-0003G
Model 463.241 with code
979AR54.10-P-0003PV
Model 463.248 with code
979AR54.10-P-0003PM
Risk of accident caused
by vehicle starting off by
itself when engine is
running. Risk of injury
caused by contusions and
burns during starting
procedure or when
working near the running
engineSecure vehicle to prevent it
from moving by itself.
Wear closed and snug-
fitting work clothes.
Do not grasp hot or rotating
parts.AS00.00-Z-0005-01A
26Run engine and inspect
for leaks
NumberDesignationEngines 112, 113

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 32 © 2006 Mitchell Repair Information Company, LLC.

Fig. 37: Identifying Locating Plate (112 589 0032 00)
Fig. 38: Identifying Locating Plate (112 589 01 32 00)

Fig. 39: Identifying Retainer (112 589 04 40 00)

Fig. 40: Identifying Holding Bush (112 589 05 40 00)
BA09.20-P-1001-
01DBolt, intake manifold
to cylinder headM8Nm20

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 33 © 2006 Mitchell Repair Information Company, LLC.

Fig. 41: Identifying Asse mbly Links (602 589 02 40 00)
Fig. 42: Identifying Case (602 589 00 98 00)

REPLACING TIMING CHAIN - AR05.10-P-7601AV
ENGINE 112
ENGINE 112.945 in MODEL 463.209 /232 /233 /244 /245 /250
ENGINE 113.962 in MODEL 463.206 /240 /241 /247 /248 /249 /254
ENGINE 113.982 in MODEL 463.243/246
ENGINE 113 (except 113.995) in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230

2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:37 PMPage 34 © 2006 Mitchell Repair Information Company, LLC.