Mercedes-Benz ML320. Service manual — part 411

Fig. 41: Identifying Assembly 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

Fig. 43: 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 batteries

No 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

Notes on battery

All models.

AH54.10-P-0001-01A

1

Disconnect ground cable

Model 463 except code
(979) Special protection
version

AR54.10-P-0003G

Model 463.241 with code
(979) Special protection
version.

AR54.10-P-0003PV

Model 463.248 with code
979

AR54.10-P-0003PM

Models 129, 208, 210.

AR54.10-P-0003A

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

2

Remove spark plugs

To ensure that the

engine can be easily
cranked when drawing in
the timing chain, and to
avoid the timing chain
jumping across.

Remove only one spark

plug at each cylinder.

Replace spark plugs

Model 463.

AP15.10-P-1580GA

Model 129.

AP15.10-P-1580A

Models 202, 208, 210 with
engine 112.

Models 163.

AP15.10-P-1580GH

3

Remove cylinder head
covers

Air filter located at vehicle
side.

AR01.20-P-5014B

Air filter located on
engine side.

AR01.20-P-5014BV

4

Remove viscous-drive fan.

Right-hand thread!

AR20.40-P-5660C

5

Remove fan shroud

On model 163 unscrew

bolts at bottom of fan
shroud.
Model 463.

AR20.40-P-6800V

6

Position engine at a 40°
crank angle before
ignition TDC of cylinder
1.

Engine must not be

cranked back.
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
camshafts.

AR05.20-P-6020AU

The copper tabs of the

timing chain must be
aligned with the markings
on the camshaft sprockets.
Because of the unevenly
long travel of the timing
chain it may be necessary
to crank the engine as
much as 14 times until the
copper tabs are aligned
with the markings on the

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

camshaft sprockets. On
vehicles equipped with an
air pump, the combination
valve must be unbolted
before the right locking
plate is inserted.
Installation : Replace
Gasket of combination
valve.

*BA09.20-P-1001-01D

Locating plate

Fig. 11

Locating plate

Fig. 12

Timing chain drive -
general

GF05.10-P-9611-01C

7

Remove chain tensioner

AR05.10-P-7800C

8

Remove camshaft position
sensor

AR15.10-P-2000A

9

Crank 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.

10

Remove camshaft bearing
bridge on right

Engine 112, 113.

AR05.20-P-7103AU

Engine 113.960 with Code
(479) cylinder shutoff.

AR05.20-P-7103AV

11

Install holding bush (3)
onto camshaft on right

Insert bolts (4) only

until they make contact.

Fig. 40

12

Bolt on holding devices
(1, 2) for timing chain at
right and left cylinder
heads

Fig. 39

13

Separate timing chain

Parts which have

dropped into the timing
case recess, must be
removed. Cover over
timing case recess with a
clean cloth.

AR05.10-P-7601-01AV

Connect old timing

chain to new timing chain
before pulling out.

Installing

14

Draw in new timing chain

Pull in the new timing

chain by turning the

AR05.10-P-7601-04AV

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me