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OM600 ENGINE MECHANICAL 1B3 -- 117
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Notice
Measure center (arrow) of the valve guide and if the
inner diameter ’A’ exceeds standard value, replace
the guide.
Tools Required
000 589 10 53 00 Reamer (for Exhaust)
000589106800CylinderBrush
000 589 21 53 00 Reamer (for Intake)
102 589 00 23 00 GO / NO GO Gauge (for Intake)
103589021500Drift(forExhaust)
103589031500Drift(forIntake)
117 589 03 25 00 GO / NO GO Gauge (for Exhaust)
346 589 00 63 00 Super Cooling Box
601 589 02 23 00 GO/NO GO Gauge
601589051500Drift(forIntake)
601589061500Drift(forExhaust)
Matching Valve Seat - Broaching Tools - Guide Sleeves
Valve Seat
Broaching Tool No.
Guide Sleeve Tool No.
Guide Sleeve Side
Intake115 589 00 53 00102 589 00 63 00B
Exhaust
115589005300
(14.2 mm)
102589006300
102 589 08 63 00B
Intake115 589 01 53 00601589156300A
Exhaust
115589015300
(14.4 mm)601 589 15 63 00B
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1B3 -- 118 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Checking
1. Thoroughly clean the valve guide bore using a cylin-
der brush.
Cylinder Brush 000 589 10 68 00
2. Insert the GO/NO GOgauge into the valve guide
bore. If the NO GO side is inserted fully, replace the
valve guide (Intake 8mm, Exhaust 9mm).
GO/NO GO Gauge 601 589 02 23 00
Replacement Procedure
1. Drive out the valve guide (2) by using a drift (5).
Notice
The valve guide must be driven out upward of the
cylinder head.
Drift (for Intake) 103 589 03 15 00
Drift (for Exhaust) 103 589 02 15 00
2. Thoroughly clean the basic bore by using a cylinder
brush.
Cylinder Brush 000 589 10 68 00
3. Check the basic bore in cylinder head for scoring
marks and ream to next repair size if necessary.
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OM600 ENGINE MECHANICAL 1B3 -- 119
D AEW OO M Y_2000
4. Reaming basic bore in cylinder head (repair size).
-- Thoroughly remove carbon deposits in cylinder
head.
Notice
Particularly remove the insides of the valve seat
rings.
-- Remove the elevation (arrow) of intake valve seat
rings.
-- Select correct broaching tool and guide sleeve
(refer to the table).
Notice
Before broaching work, the broaching tool must be
cleared of swarf with a stiff plastic brush.
-- Lubricate the basic bore, guide sleeve and
broaching tool with petroleum.
-- Push broaching tool (6) in broaching direction (ar-
row) into the guide sleeve (7) far enough so that
the first cut of the broaching tool is positioned in
the basic bore when guide sleeve is fitted onto
the valve seat ring (3).
6. Broaching tool
7. Guide sleeve
See the ’standard data’
-- Center the guide sleeve (7) in the valve seat ring
(3) by turning.
-- Knock through the broaching tool (6) with a plas-
tic hammer (approx. 25g). and aluminum drift.
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1B3 -- 120 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
5. Heat the cylinder head (1) in a wear tank to approx.
80_C.
6. Cool down the new valve guide (2) with liquid nitro-
gen.
Notice
Do not touch the cooled valve guide by hand.
Super Cooling box 346 589 00 63 00
7. Drive in new valve guide with drift (8) until the wire
ring makes contact.
Notice
Thevalveguidemustbedriveninfromthecylinder
head cover.
Drift (for Intake) 601 589 05 15 00
Drift (for Exhaust) 601 589 06 15 00
8. Check the valve guide bore with GO / NO GO gauge
(9).
The GO side (marked ’0’) should just still drop. If the
GO side cannot be inserted, the bore of valve guide
should be reamed.
Notice
Perform the check only on cooled down cylinder
head.
GO / NO GO Gauge (for Intake) 102 589 00 23 00
GO / NO GO Gauge (for Exhaust) 117 589 03 23 00
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OM600 ENGINE MECHANICAL 1B3 -- 121
D AEW OO M Y_2000
9. If necessary, ream the valve guide bore evenly.
Notice
Never turn the reamer against the direction of rota-
tion.
Reamer (for Exhaust) 000 589 10 53 00
Reamer (for Intake) 000 589 21 53 00
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1B3 -- 122 OM600 ENGINE MECHANICAL
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VALVE SEAT RINGS
Preceding Work : Removal of valve
Checking of valve guide, replace if necessary
Removal of prechamber
1 Cylinder Head
2 Valve Seat Ring
3 Valve Guide
A Height (Cylinder Head Upper / Lower Surface)
B Height (cylinder Head Cover Surface -- Seat of
Valve Seat Ring)D Valve Seat Ring Outer Diameter
D1 Valve Seat Ring Inner Diameter
D2 Basic Bore Diameter
H Height of Valve Seat Ring
Service Ddata
Item
Intake
Exhaust
D240.000 -- 40.016 mm37.000 -- 37.016 mm
D40.084 -- 40.100 mm37.084 -- 37.100 mm
D133.400 -- 33.600 mm30.400 -- 30.600 mm
H6.955 -- 7.045 mm6.955 -- 7.045 mm
Overlap U=D-- D20.068 -- 0.100 mm0.068 -- 0.100 mm
B133.4 mm133.4 mm
A142.5 mm142.5 mm
Page 672 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 123
D AEW OO M Y_2000
Commercial Tools
Cylinder Head Clamping DeviceHunger
D-- 8000 München 70
Type Ventilknecht K2000
Order No. 221 00 100
Valve Seat Turning ToolHunger
D-- 8000 München 70
Ty p e VDS 1 A
Order No. 236 03 308
Ring Seat Turning ToolHunger
D-- 8000 München 70
Type RDS 1
Order No. 219 00 100
Pneumatic Removal / Installation Device
(Drift : 8mm, 9mm, 14mm)Hunger
D-- 8000 München 70
Type PVM 1
Tensioning HeadHunger
D-- 8000 München 70
Order No. 250 15 250
Cutting Tool for Recessing GroovesHunger
D-- 8000 München 70
Order No. 217 93 601
Test Set for ValvesHunger
D-- 8000 München 70
Order No. 216 69 210
Internal Dial Gauge (Range : 25 -- 60mm)Mahr
D-- 7300 Esslingen
Order No. 844
External Micrometer (Range : 25 -- 60mm)Mahr
D-- 7300 Esslingen
Order No. 40 S
Electrically Heated Water TankOtto Dürr
D-- 7123 Sachsenherm -- Ochsenbach
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1B3 -- 124 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Removal Procedure
1. Measure dimension ’A’.
Limit142.5 mm
2. Clamp the cylinder head with clamping device.
3. Cut groove into the valve seat ring so that dimension
’C’ is approx. 2mm and dimension ’E’ is approx.
6mm.
4. Remove the cylinder head from the clamping device
and place it onto wooden blocks.
5. Remove the valve guide (3).
Drift (Intake) 8mm
Drift (Exhaust) 9mm
6. Insert the tensioning head (4) and extracted wedges
(arrow) by turning the bolt (5).
Notice
Carefully tighten the bolt (5) otherwise the valve
seat ring in the cylinder headwill be excessively ten-
sioned.
7. Lock the bolt (5) with nut (6).