Mercedes-Benz ML320. Manual — part 426

2. Coat the outside of valve guide (5) with oil.

3. Position the valve guide (5) and knock into the cylinder head as far as the stop (arrow)

of the insertion

drift (3).

Check the secure seating of the valve guide (5). The installation depth of the valve guide (5)

is set by the

drift punch (3).

Fig. 106: Identifying Valve Guide

4. Check the valve guide (5) with the

feeler gauge (4).

The side of the

feeler gauge (4) marked

with '0' must be inserted completely into the valve guide (5). The valve guide (5) must be replaced if the

feeler gauge (4) cannot be inserted completely. The valve guide (5) is made of powdered metal, so

reaming is not possible.

Fig. 107: Identifying Valve Guide And Feeler Gauge

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

REAM BASIC BORE TO REPAIR STAGE I - AR05.30-P-3731-04AV

Test and adjustment values for valve guides

Number

Designation

Engine 112 except
112.951/976,
Engines 113.940/941/
942/943/944/
945/946/948/
960/961/962/
963/964/965/
966/967/968/
969/971/980/
981/982/984/
986/987/988/
990/991/992/
993/995

Engine 112.951/976

BE05.30-P-
1001-02D

Outside
diameter of
exhaust and
intake valve
guide

Standard
series

mm

12.540...12.551

12.540...12.551

Standard I
series
(color:
blue)

mm

12.560...12.571

12.560...12.571

Repair
stage I
(color: red)

mm

12.740...12.751

12.740...12.751

Repair
stage II
(color:
yellow)

mm

13.140...13.151

13.140...13.151

BE05.30-P-
1002-02D

Bore
diameter in
cylinder
head of
exhaust and
intake valve
guide

Standard
series

mm

12.500...12.511

12.500...12.511

Standard I
series
(color:
blue)

mm

12.520...12.531

12.520...12.531

Repair
stage I
(color: red)

mm

12.700...12.711

12.700...12.711

Repair
stage II
(color:
yellow)

mm

13.100...13.11113.100...13.1 13.100...13.11113.100...13.1

BE05.30-P-
1003-02D

Overlap in cylinder head mm

0.029...0.051

0.029...0.051

BE05.30-P-
1004-02D

Length

L

mm

50

50

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

Fig. 108: Identifying Supports(1 Pair) (606 589 00 31 00)

Fig. 109: Identifying Reaming Tool (119 589 01 53 00)

Fig. 110: Identifying Guide Sleeve (113 589 02 63 00)

Fig. 111: Identifying Cylinder Brush (000 589 10 68 00)

BE05.30-P-
1005-02D

Dimension

A

mm

14.3 (±0.2)

14.3 (±0.2)

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me

1. Place cylinder head onto the supports (1).

Align the supports so that the reaming tool is not able to

strike the supports when it is pressed through.

Fig. 112: Identifying Cylinder Head Supports

2. Insert reaming tool (2)

into the basic bore.

3. Press reaming tool (2)

through.

Lubricate with petroleum during this step. Clean reaming tool (2)

with compressed air or a plastic brush

after each reaming operation. Use a matching aluminum drift as

an extension in the area of the guide sleeve (3) for pressing through the reaming tool (2).

Fig. 113: Identifying Reaming Tool

INSPECT VALVE GUIDES - AR05.30-P-3731-06AV

2004 Mercedes-Benz ML350

1998-2005 ENGINE Engine timing - 163 Chassis

me