Page 2345 of 4133
Shown on exhaust valve seat ring
Fig. 118: Identifying Dimension
- Shown On Exhaust Valve Seat Ring
Shown on exhaust side
BE05.30-P-
1005-03CDistance between contact
face of cylinder head and
end face of valve seat ringIntakemm8.50...8.588.16...8.36
Exhaustmm9.57...9.657.99...8.19
BE05.30-P-
1006-03CBasic bore diameter of inlet
valve seat rings in cylinder
headStandardmm39.000...39.01634.000...34.016
Rep. size 1mm40.200...40.21635.200...35.216
BE05.30-P-
1007-03CBasic bore diameter of
exhaust valve seat rings in
cylinder headStandardmm44.000...44.01637.000...37.016
Rep. size 1mm45.200...45.21638.200...38.216
BE05.30-P-
1008-03CBore depth of
valve seat
rings in
cylinder headIntakeStandardmm14,4013,99
ExhaustStandardmm17,4714,16
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Saturday, October 02, 2010 3:39:39 PMPage 104 © 2006 Mitchell Repair Information Company, LLC.
Page 2346 of 4133
Fig. 119: Identifying Basic Bore Diameter Of Valve Seat Ring In Cylinder Head - Shown On Exhaust
Side
The overlap of the valve seat ring in the cylinder head is determined as follows: outside diameter of the valve
seat ring (B) minus the basic bore diameter of th e valve seat ring in the cylinder head (E).
Fig. 120: Identifying Outside Diameter Of Valve Seat Ring And Basic Bore Diameter Of Valve Seat Ring
In Cylinder Head
REPLACE VALVE SEAT RINGS - AR05.30-P-3831AV
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
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Page 2347 of 4133

ENGINE 113 in MODELS 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230
Fig. 121: Identifying Basic Bore Of Valve Seat Ring (Intake) And Basic Bore Of Valve Seat Ring
(Exhaust)
Modification notes
25.2.04Value changed from
0.084...0.110 mm to
0.074...0.1 mmFigure in BE05.30-P-1004-03C for
engine 112.910/911 modified*BE05.30-P-1004-
03C
25.2.04Value changed from
0.084...0.110 mm to
0.074...0.1 mmFigure revised in BE05.30-P-1004-03C
in case of engine
112.912/914/915/920/921/922/923/940/
941/942/943/944/945/946/947/948/960/
961, 113.940/941/942/943/944*BE05.30-P-1004-
03C
25.2.04Value changed from
0.084...0.110 mm to
0.074...0.1 mmFigure revised in BE05.30-P-1004-03C
in case of engine
113.960/961/962/963/965/967/968/
980/981/982/984/987/988/990/991 /992*BE05.30-P-1004-
03C
Remove/install
1Remove valves AR05.30-P-3511AV
2Inspect valve guide inner
diameter for wear If the measurements
obtained for the valve
guide are not within the
specified tolerance ?AR05.30-P-3731-06AV
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Saturday, October 02, 2010 3:39:39 PMPage 106 © 2006 Mitchell Repair Information Company, LLC.
Page 2348 of 4133

Test values for valve seat rings
Replace valve guide.AR05.30-P-3731AV
3Turn valve seat ring out of
the cylinder head with
ring seat turning tool Pay attention to
operating instructions of
ring seat turning tool.
*WE58.40-Z-1009-21A
*WE58.40-Z-1010-21A
4Measure diameter of valve
seat ring basic bore (D1,
D2) in the cylinder head Overlap between valve
seat ring and basic bore
must be assured.*BE05.30-P-1006-03C
*BE05.30-P-1007-03C
*BE05.30
-P-1004-03C
If the measurements
obtained deviate from the
test
values: ? machine basic
bores to the next oversize
of the valve seat rings
Pay attention to inspection
and machining
dimensions of the valve
seat rings and of the basic
bore ?
Inspection and machining
dimensions of valve seat
ringsAR05.30-P-3831-03AV
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
5Heat cylinder head in
recirculated heating
cabinet or heating oven Temperature approx.
80 °C
*WH58.30-Z-1001-28A
*WH58.30-Z-1003-28A
8Drive in valve seat ring
using a suitable drift
9Machine valve seat rings After installing a new
valve seat ring, the valve
must always be replaced.AR05.30-P-4511AV
10Install in the reverse order
NumberDesignationEngine 112.910/
911Engine 112.912/
914/915/920/
921/922/923/
940/941/942/
943/944/945/
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Page 2349 of 4133

Test values for valve seat rings
Commercially available tools
Workshop equipment
946/947/948/
951/960/961,
113.940/941/94
2/943/944
BE05.30-P-
1004-03CValve seat ring -
overlap in
cylinder headIntakemm0.084...0.1150.084...0.115
Exhaustmm0.074...0.1000.074...0.100
BE05.30-P-
1006-03CBasic bore
diameter of inlet
valve seat rings
in cylinder headStandardmm31.000...31.01637.000...37.016
Rep. size 1mm32.000...32.01638.200...38.216
BE05.30-P-
1007-03CBasic bore
diameter of
exhaust valve
seat rings in
cylinder headStandardmm35.000... 35.01642.000... 42.016
Rep. size 1mm36.200...36.21643.200...43.216
NumberDesignation
Engine
113.960/
961/962/963/
964/965/967/
968/971/980/
981/982/984/
987/988/990/
991/992/993/
995
BE05.30-P-1004-
03CValve seat ring - overlap in cylinder headIntakemm0.084...0.115
Exhaustmm0.074...0.100
BE05.30-P-1006-
03CBasic bore diameter of inlet valve seat rings in
cylinder headStandardmm39.000...39.016
Rep. size
1mm40.200...40.216
BE05.30-P-1007-
03CBasic bore diameter of exhaust valve seat rings in
cylinder headStandardmm44.000...44.016
Rep. size
1mm45.200...45.216
NumberDesignation
WH58.30-Z-1001-28ARecirculated air warming cabinet
WH58.30-Z-1003-28AHeating oven
WE58.40-Z-1009-21AValve seat turning device
WE58.40-Z-1010-21AValve seat turning device
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Saturday, October 02, 2010 3:39:39 PMPage 108 © 2006 Mitchell Repair Information Company, LLC.
Page 2350 of 4133

MEASURE VALVE SETBACK TO CYLI NDER HEAD - AR05.30-P-4100-01AV
Modification notes
Test and adjustment values of cylinder head
Test and adjustment values of cylinder head
Workshop equipment
Shown on engine 606
1. Measure valve setback (a) with depth caliper
gage.
25.3.04Value changed from 8.50...8.90
mm to 8.05...8.45 mmValue in series 1001, exhaust valve, for engine
113.962/982/987/990/991/993 changed
25.3.04Value changed from 7.90...8.30
mm to 7.20...7.60 mmValue in series 1001, intake valve, for engine
113.962/982/987/990/991/993 changed
NumberDesignationEngines 112,
113.940/941/
942/943/944/
945/946/948
except 112.976Engine 112.976
BE01.30-P-
1001-02DValve setback of
new valves and
new valve seat
ringsExhaust valvemm8.05...8.458.50...8.90
Intake valvemm7.60...8.007.90...8.30
NumberDesignationEngine
113.960/961/
963/965/966/
967/968/980/
981/984/986/
992/995Engine 113.987/
988/989/
990/991/
993
BE01.30-P-
1001-02DValve setback of
new valves and
new valve seat
ringsExhaust valvemm8.5...8.98.05...8.45
Intake valvemm7.90...8.307.20...7.60
WE58.40-Z-1002-19ADepth gage
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Saturday, October 02, 2010 3:39:39 PMPage 109 © 2006 Mitchell Repair Information Company, LLC.
Page 2351 of 4133

Fig. 122: Identifying Valve Setback - Shown On Engine 606
CHECK VALVES - AR05.30-P-4201-01AV
Modification notes
Test values for valves
Test values for valves
19.11.04Value changed from 45 (±15') mm to
45 (+15') mmFigure for series 1003 for engine
112 complete*BE05.30-P-1003-
01E
NumberDesignationEngine
112.910/911Engine
112.912/913/
914/915/920/
921/922/923/
940/941/942/
943/944/945/
946/947/948/
949/960Engine
112.951
BE05.30-P-
1001-01EValve disk
dia.Exhaustmm34±0,141±0,141 ±0,1
Intakemm30±0,136±0,136±0,1
BE05.30-P-
1002-01EValve disk
heightExhaust when
newmm1.61.61.6
Intake valve
when newmm1.21.21.2
BE05.30-P-
1003-01EValve seat
angle (a)ExhaustAngle°45 (+15')45 (+15')45 (+15')
IntakeAngle°45 (+15')45 (+15')45 (+15')
BE05.30-P-
1004-01EValve stem
dia.Exhaustmm6,9706,9706.970 (-0.02)
Intakemm6,9756,9756.975 (-0.015)
BE05.30-P-
1005-01EValve lengthExhaustmm121,65±0,2122,25±0,2122,25 (±0,2)
Intakemm120,70±0,2119,40±0,2119,40 (±0,2)
NumberDesignationEngines
113.940/941/
942/943/944Engine
113.960/
961/962/963/ Engine
137.970
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
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Saturday, October 02, 2010 3:39:39 PMPage 110 © 2006 Mitchell Repair Information Company, LLC.
Page 2352 of 4133
Fig. 123: Identifying Valve Dimensions
CHECKING AND MACHINING DIMENSIONS FOR VALVE SEATS - AR05.30-P-4510-01AV
Test values for valve seat rings
965/967/968/
980/981/982/
984/987/988/
990/991/992/
993/995
BE05.30-P-
1001-01EValve disk
dia.Exhaustmm41±0,143±0,136±0,1
Intakemm36±0,138±0,133±0,1
BE05.30-P-
1002-01EValve disk
heightExhaust when
newmm1.61.61.6
Intake valve
when newmm1.21.21.1
BE05.30-P-
1003-01EValve seat
angle(aExhaust)Angle°45±15'45±15'45±15'
IntakeAngle°45±15'45±15'45±15'
BE05.30-P-
1004-01EValve stem
dia.Exhaustmm6,9706,9706,970
Intakemm6,9756,9755,975
BE05.30-P-
1005-01EValve lengthExhaustmm122,25±0,2121,80±0,2104,30 ±0,2
Intakemm119,40±0,2119,10±0,2103,60 ±0,2
NumberDesignationEngine
112.910/
911Engine 112.912/
914/915/920/
921/922/923/
940/941/942/
943/944/945/
2004 Mercedes-Benz ML350
1998-2005 ENGINE Engine timing - 163 Chassis
me
Saturday, October 02, 2010 3:39:39 PMPage 111 © 2006 Mitchell Repair Information Company, LLC.