Mercedes-Benz ML320. Manual — part 416

Shown on engine 112 1 Drift punch

Fig. 57: Identifying Rocker Arm Shaft Components - Shown On Engine 112

Removing

1

Remove camshaft
bearing bridge

Engines 112, 113 except engines 113.967/990 in models 219,
engines 113.964 /971 /989 /993

AR05.20-P-
7103AU

Engine 113.993 in model 463

AR05.20-P-
7103GX

Engines 113.967/990 in model 219

AR05.20-P-
7103TY

Engine 113.964 in model 164

AR05.20-P-
7103GZ

Engine 113.971 in model 251

AR05.20-P-
7103RT

Engine 113.989 in model 171

AR05.20-P-
7103VT

Risk of injury to skin
and eyes caused by
handling hot or glowing
objects.

Wear safety gloves, protective clothing and safety glasses, if
necessary.

AS00.00-Z-
0002-01A

2

Heat camshaft bearing
bridge to approx. 150°
C

Heat the camshaft bearing bridge uniformly, but do not

heat it over 160°C; there is a danger of structural changes.

i040

*WH58.30-Z-
1001-28A

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

i040

*WH58.30-Z-
1003-28A

3

Place camshaft bearing
bridge on board (4)

Fig. 56

4

Remove the rocker arm
spindle (3) by tapping
gently with a hammer

If it is tapped very hard, there is a danger of distorting the

camshaft bearing bridge and damaging the hollow rocker arm
spindle (3).

Fig. 53

Check

5

Inspect bearing
surfaces of rocker arms
for damage

Pay attention to any long score marks caused by the

removal of the rocker arm spindles (3). Replace the rocker arm
if damaged.

Installing

6

Insert the guide shafts
into the camshaft
bearing bridge.

At the same time, preassemble the rocker arm on guide

shaft.

Fig. 54

Fig. 55

Risk of injury to skin
and eyes caused by
handling hot or glowing
objects.

Wear safety gloves, protective clothing and safety glasses, if
necessary.

AS00.00-Z-
0002-01A

7

Heat camshaft bearing
bridge to approx. 150°
C

Heat the camshaft bearing bridge uniformly, but do not

heat it over 160°C; there is a danger of structural changes.

WH58.30-Z-
1001-28A

*WH58.30-Z-
1003-28A

8

Cool the rocker arm
spindle (3)

9

Place heated camshaft
bearing bridge on board
(4)

Fig. 56

10

Install rocker arm
spindle (3)

Insert the rocker arm spindle (3) in the camshaft bearing

bridge by tapping gently with a hammer and simultaneously
remove the guide shaft. Ensure that the rocker arms do not get
jammed.

11

Align the rocker arm
spindle (3)

In order to align and secure the rocker arm spindle (3), fit

two screws through the mounting bores in the camshaft
bearing bridge. The oil supply bores of the rocker arm spindle
(3) point towards the cylinder head.

Engines 112, 113 except engines 113.967 /990 in models 219,
engines 113.964 /971 /989 /993

AR05.20-P-
7103AU

Engine 113.993 in model 463

AR05.20-P-
7103GX

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Fig. 58: Identifying Board (112 589 10 59 00)

Fig. 59: Identifying Extraction Drift (112 589 00 15 00)

Fig. 60: Identifying Guide Shaft (112 589 02 31 00)

12

Install camshaft bearing
bridge

Engines 113.967/ 990 in model 219

AR05.20-P-
7103TY

Engine 113.964 in model 164

AR05.20-P-
7103GZ

Engine 113.971 in model 251

AR05.20-P-
7103RT

Engine 113.989 in model 171

AR05.20-P-
7103VT

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Fig. 61: Identifying Guide Shaft (112 589 03 31 00)

Commercially available tools

SET THE BASIC POSITION OF CAMSHAFTS - AR05.20-P-6020AU

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

Shown on engine 112

Number

Designation

WH58.30-Z-1001-28A

Recirculated air warming cabinet

WH58.30-Z-1003-28A

Heating oven

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me