bolt pattern MERCEDES-BENZ ML320 1997 Complete User Guide

Fig. 74: Identifying Tightening Pattern/Bolt Assignment (Left And Right Cylinder Head M 112)
Tightening instructions for left and right cylinder heads M 112
Use wrench bit to tight en cylinder head bolts.
Observe sequence, see tightening pattern.
If the tightening torque is exceeded on a cylinder he ad bolt, unscrew the cylinder head bolt, inspect shank
length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with
stage 1.
Cylinder head bolts must not be retightened.
Tightening diagram/bolt assignment
Left and right cylinder head M 113
Fig. 75: Identifying Left And Right Cylinder Head M 112 (Left And Right Cylinder Head M 113)

Tightening instructions for left and right cylinder heads M 113
Use wrench bit to tight en cylinder head bolts.
Observe sequence, see tightening pattern.
If the tightening torque is exceeded on a cylinder he ad bolt, unscrew the cylinder head bolt, inspect shank
length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with
stage 1.

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 80 © 2006 Mitchell Repair Information Company, LLC.

28Unscrew bolts,
cylinder head -->
timing case cover
(20) *BA01.40-P-
1002-01C
29Slacken cylinder
head bolts (21) in
stages, unscrew Slacken cylinder head bolts according to
loosening pattern only once the engine has
cooled down, in order to avoid that the cylinder
head warps.AR01.30-P-5800-
09B
Installation: Observe tightening pattern and
tightening instructions of cylinder head bolts.
Oil thread and head cont act surface of cylinder
head bolts.AR01.30-P-5800-
07B
Screwdriver insertFig. 72
Screwdriver insertFig. 73
*BA01.30-P-
1001-01D
30Remove cylinder
head Installation: On Engine 112/113 observe
porous points in the le ft and right cylinder
head. If porous points are present, sealant must
be applied to the cylinder head gasket.
Notes on application
of sealant to cylinder
head gasket.Engine 112, 113AH01.30-P-1000-
04VA
The sealant must be applied within 10
minutes.
Loctite 5900 sealant.*BR00.45-Z-
1013-01A
31
Inspect version of
cylinder head gasket
Information for
assigning the
cylinder head gasketsAssignment of cylinder head gasket
Engine 112, 113AH01.30-P-1000-
06V
32Check cylinder head
bolts (21) AR01.30-P-5800-
03B
*BE01.30
-P-
1001-04B
33Clean sealing
surfaces, check for
cracks, shrink holes
and flatness, clean
bolt holes Pay attention to dowel sleeves (26) for
locating the cylinder head.
Sealing surfaces of crankcase and cylinder
head are provided with an 0.8 mm thick
silicone layer during se ries production. Silicone
sealant is applied in the gasket area when
carrying out repairs only if shrink holes are
present.
The sealant must be applied within 10
minutes.
*BR00.45-Z-

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 89 © 2006 Mitchell Repair Information Company, LLC.