Mercedes-Benz ML320. Manual — part 405

Fig. 8: Identifying Hydraulic Valve Clearance Compensation Element Components - Shown On Engine
112 In Model 210

Shown on engine 112 in model 210

Remove/Install

1

Remove cylinder
head covers with
ignition coils (6)

Air cleaner mounted on vehicle.

AR01.20-
P-5014B

Air cleaner positioned at engine side.

AR01.20-
P-
5014BV

2

Position
crankshaft to 0°
after ignition
TDC of cylinder
1

The engine must not be turned back; otherwise the chain can get

jammed.

AR05.10-
P-6858V

Model 129,
463.206/209/232/233/240/241/243/244/245/246/247/248/249/250/254,
Model 163 except 163.174/175, Model 202, 208, 210 with engine 113

AR05.10-
P-7800C

Model 163.174/175, Model 209 with engine 113.987 up to 23.4.04,

AR05.10-

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

CHECK THE ENGINE VALVE TIMING - AR05.10-P-6858V

ENGINE 112

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

3

Remove chain
tensioner (5)

Model 209 with engine 113.968
Model 170, 202, 203, 208, 209, 210 with Engine 112

P-
7800CA

Model 203 with engine 113.988
Model 209 with engine 113.987 as of 24.4.04

AR05.10-
P-
7800AC

Model 211, 215, 220, 230

AR05.10-
P-
7800AM

4

Detach left
camshaft bearing
bridge (7) and
right camshaft
bearing bridge
(8)

Engine 112, 113 except cylinder shutoff, code 479.

AR05.20-
P-
7103AU

Engine 113.960 with cylinder shutoff, code 479.

AR05.20-
P-
7103AV

Installation:

AR05.10-
P-6858V

Check basic position of camshafts, if required: ? Set the basic position of
camshafts

AR05.20-
P-
6020AU

5

Use a 2 mm drift
to press
compensation
element (11) of
the relevant
cylinder out of
the roller rocker
arms (9)

Do not use a magnet!

The slide surface of the compensation element (11) would get
magnetized. This can cause minute iron chips to accumulate, which in
turn can damage the compensation element (11) and the cam.

Installation: The small plate at the top of the roller-type rocker arm

must point to the compensation element with the slits facing downwards
(11). Compensation elements which have not been replaced, must be
reinstalled at the same point.

6

Install in the
reverse order

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Fig. 9: Identifying Engine Valve Timing, Pin On Crankcase - Shown On Engine 112

Shown on engine 112

Inspect basic position of balancing shaft only engine 112

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Fig. 10: Locating Notch In Balancing Weight, Pin On Crankcase

Remove/install

1

Remove
cylinder head
covers

Air filter located at vehicle side.

Air filter located on engine side.

2.1 Unbolt

combination
valve (on right)

Only for engines with air pump.
Installation: Replace Gasket of combination valve.

Checking

3

Inspect timing Engine 112.910/911/912/920/921/922/923/940/941/942/942/944/945/946/947/949, Engine

113.940/941/942/943944/960//961/962/963/965/967/968/980/981/982/984/987/990/991/992
Engine 113.960 with cylinder shutoff code 479 see: ?
Inlet

Outlet

Camshaft code

number and
assignment

Engine 112, 113

4

Position engine
to 40° after
ignition TDC
of cylinder 1

Rotate engine at crankshaft in direction of rotation until 40° marking on belt

pulley/vibration damper is aligned with marking on timing case cover. Slots at camshafts
must be pointing in direction of inner V.

The engine must not be turned back; otherwise the timing chain can get jammed.

5

Check basic
position of
camshafts

Place locating plate for right camshaft (2) flush onto the right cylinder head and insert

into the groove in the camshaft (6). Proceed the same way with the left-hand camshaft in the
left-hand cylinder head.

If both locating plates cannot be inserted into the grooves: ?
Set the basic position of camshafts.

6.1 Inspect basic

position of the
balancing shaft

Only for Engine 112, see figure.

The markings of the pin at front crankcase (A) and the notch in the correctional weight

(B) on the front end of the correctional weight point to each other. The two scribe marks can
be seen through the left timing case duct at a depth of about 22 cm from the cylinder head
cover joint surface.

7

Install in the

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me