Mercedes-Benz ML320. Manual — part 417

Fig. 62: Identifying Basic Position Of Camshafts - Shown On Engine 112

Modification notes

26.11.97

M112/113 Operation note modified

Step 3

AR05.10-P-7800C

Removing

1 Remove

cylinder
head
covers

Air filter located at vehicle side.

AR01.20-
P-5014B

Air filter located on engine side.

AR01.20-
P-5014BV

2 Check

basic
position of
camshafts

If the basic position of the camshafts is not correct: ?
Turn engine to 40° after ignition TDC at cylinder 1.

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

jammed.

AR05.10-
P-6858V

3 Remove

chain
tensioner

Engine 112 in models 211.080/082/261/ 265/280/282,

Engine 113 in model 211.083/270/283

Engine 112.945 in model 463.209/232/ 233/244/245/250,

AR05.10-
P-7800C

Engine 112 in models 163, 129,

Engine 113.962 in model 463.206/240/241 /247/248/249/254,

Engine 113 (except 113.965/981) in Model 210, 208, 202, 163, 129,

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Engine 113.982 in model 463.243/246

Engine 112 in Model 170, 202, 203, 208, 209, 210,

AR05.10-
P-7800CA

Engine 113 in models 163.174/175, 209

Engine 112 in Model 211.061 /065, 220, 230.467,

AR05.10-
P-
7800AM

Engine 113 in models 211.070/076/276,
215.373/374/375,220.070/073/074/075 /083/084/170/173/174/175/183/184/875,
230.474/475

4 Remove

camshaft
Hall
sensor

Engine 112 in models 211.080/082/261/265 /280/282,

Engine 113 in model 211.083/270/283

Engine 112.945 in model 463.209/232/233 /244/245/250,

AR15.10-
P-2000A

Engine 112 in Model 129, 163, 170, 202, 203, 208, 209.361/365/461/465, 210,
211.061 /065, 220, 230.467,

Engine 113 (except 113.990/991) in Model 129, 163, 202, 208,
209.375/376/475/476, 210, 211.070, 215, 220, 230.474/475,

Engine 113.962 in model 463.206/240/241 /247/248/249/254,

Engine 113.982 in model 463.243/246

Engine 113.990 in model 211.076/276,

Engine 113.991 in models 215.374, 220.074 /174

AR15.10-
P-
2000RVK

5 Remove

right-hand
camshaft
sprocket

Lift timing chain from camshaft sprocket.

Open-end wrench

Fig. 22

Insertion tool

Fig. 66

Torque wrench

Fig. 23

6 Remove

left-hand
camshaft
sprocket

Lift timing chain from camshaft sprocket.

Open-end wrench

Fig. 22

Insertion tool

Fig. 66

Torque wrench

Fig. 23

Install

7 Rotate

left-hand
camshaft
to the
basic
position
and fit
locating
plate to
the

Open-end wrench

Fig. 22

Groove of camshaft (6) must point to the center of the cylinder head cover

separating surface in direction of inner V.

Locating plate

Fig. 12

Place locating plate flush onto left cylinder head and insert into the groove

(6) of the camshaft.

At a 40° crank angle after ignition TDC of cylinder 1 it is possible to rotate

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

camshaft

the camshaft without the valves coming into contact with the pistons.

8 Rotate

right
camshaft
in basic
position
and insert
locating
plate for
right
camshaft
(2) in the
camshaft

Open-end wrench

Fig. 22

Groove of camshaft (6) must point to the center of the cylinder head cover

separating surface in direction of inner V.

Locating plate

Fig. 11

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

and insert into the groove of the camshaft (6).

At a 40° crank angle after ignition TDC of cylinder 1 it is possible to rotate

the camshaft without the valves coming into contact with the pistons.

9 Install

left-hand
camshaft
sprocket

Place timing chain onto camshaft sprocket.

Insertion tool

Fig. 66

Bolt of camshaft sprocket engine 112, 113 except 113.969

*BA05.20-
P-1001-
01B

10 Install

right-hand
camshaft
sprocket

Place timing chain onto camshaft sprocket.

Insertion tool

Fig. 66

Bolt of camshaft sprocket engine 112, 113 except 113.969

*BA05.20-
P-1001-
01B

11 Install

camshaft
Hall
sensor

Engine 112 in models 211.080/082/261/265 /280/282,

Engine 113 in model 211.083/270/283

Engine 112.945 in model 463.209/232/233 /244/245/250,

AR15.10-
P-2000A

Engine 112 in Model 129, 163, 170, 202, 203, 208, 209.361/365/461/465, 210,
211.061 /065, 220, 230.467,

Engine 113 (except 113.990/991) in Model 129, 163, 202, 208,
209.375/376/475/476, 210, 211.070, 215, 220, 230.474/475,

Engine 113.962 in model 463.206/240/241 /247/248/249/254,

Engine 113.982 in model 463.243/246

Engine 113.990 in model 211.076/276,

AR15.10-
P-
2000RVK

Engine 113.991 in models 215.374, 220.074 /174

*BA15.10-
P-1002-
03A

12 Installing

chain

Engine 112 in models 211.080/082/261/265 /280/282,

Engine 113 in model 211.083/270/283

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Camshaft

Camshaft

tensioner Engine 112.945 in model 463.209/232/233 /244/245/250,

AR05.10-
P-7800C

Engine 112 in models 163, 129

Engine 113.962 in model 463.206/240/241 /247/248/249/254,

Engine 113 (except 113.965/981) in Model 210, 208, 202, 163, 129,

Engine 113.982 in model 463.243/246

Engine 112 in Model 170, 202, 203, 208, 209, 210,

AR05.10-
P-7800CA

Engine 113 in models 163.174/175, 209

Engine 112 in Model 211.061 /065, 220, 230.467,

AR05.10-
P-
7800AM

Engine 113 in models 211.070/076/276,
215.373/374/375,220.070/073/074/075 /083/084/170/173/174/175/183/184/875,
230.474/475

Check

13 Inspect

timing

AR05.10-
P-6858V

Check

general
notes on
valve
timing,
scribe
marks

Engine 112, 113

AH05.10-
P-1000-
01A

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

jammed.

14 Install

cylinder
head
covers

Air filter located at vehicle side.

AR01.20-
P-5014B

Air filter located on engine side.

AR01.20-
P-5014BV

Number

Designation

Engines
113.940/941/
942/943/944/
948/961/962/
963/964/965/
966/967/968/
969/971/980/
981/982/984/
986/992/995

Engine
112
except
112.951/976

BA05.20-P-
1001-01B

Bolt, camshaft
sprocket

M12x45 Stage 1

Nm 50

50

Stage 2

Angle° 90

90

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me