Page 418 of 1463
1B3-116 OM600 ENGINE MECHANICAL
8.000
- 8.030
9.000
- 9.05039.5 Intake
Exhaust0.029
- 0.051
0.029
- 0.051 Red
White
Red
White
Diameter ‘a’
Service Data
ItemBasic Bore
Repair size 1
Repair size 2
Repair size 1
Repair size 2Outer Diameter ‘D’
14.251
14.440 - 14.451
14.240 - 14.251
14.440 - 14.451Color Code
14.200 - 14.211
14.400 - 14.411
14.200 - 14.211
14.400 - 14.411Overlap
‘D’ - ‘a’Valve Guide
Inner Diameter ‘A’
37.7
Length ‘L’
CHECK AND REPLACEMENT OF VALVE GUIDES
Preceding Work : Removal of cylinder head
Removal of valve spring
Removal of valve
1 Cylinder Head
2 Valve Guide3 Valve Seat Ring
a Basic Bore Diameter
Page 429 of 1463
OM600 ENGINE MECHANICAL 1B3-127
CHECK AND MACHINING OF VALVES
Preceding Works : Removal of cylinder head
Removal of the vale spring
Removal of the valve
I Valve Length
W Camshaft Cam Basic Diameter
X Distance (Camshaft Basic Bore - Valve Stem)Y Half Camshaft Basic Bore Diameter
Z Distance (Cylinder Head Cover Parting Surface -
Valve Stem)
Page 430 of 1463
1B3-128 OM600 ENGINE MECHANICAL
Intake Valve Exhaust Valve
Item
Valve Disc Diameter ‘d’
Valve Disc Height ‘h’
Setting Angle “a” or Machining the Valve
Valve Stem Diameter ‘d1’
Valve Length ‘I’Intake Valve
37.90 - 38.10 mm
1.7 mm
45°
7.955 - 7.970 mm
106.20 - 106.60 mm
105.30 - 105.70
0.03 mmExhaust Valve
34.90 - 35.10 mm
1.7 mm
45°
9.945 - 8.960 mm
106.20 - 106.60 mm
105.30 - 105.70 mm
0.03 mm
Standard
Repair
Max. Permis Sible Runout at Valve Stem and Valve Seat
W = 38.0 ± 0.2mm
Matching Valves
Camshaft Cam Basic Dia.
Size (x)
Size (x)
Size (x)19.5 - 20.3mm
20.4 - 21.4mm
21.4 - 21.97mmW = 36.6 ± 0.2mm Camshaft Cam Basic Dia.
19.5 - 20.1mm
20.2 - 21.2mm
21.2 - 21.97mmValve to be Used
Use machined valve,
if needed
new repair valve
I = 105.5 ± 0.2mm
Reuse valve
Use standard size
valve
I = 106.4 ± 0.2mm
Page 435 of 1463
OM600 ENGINE MECHANICAL 1B3-133
Service Data
Item
Valve Arrears ‘a’
Valve Seat Width ‘b’
Valve Seat Angle ‘
a’
Valve Seat Free Angle ‘
b’
Permissible Radial Runout
Valve Length ‘I’Intake
0.1 - 0.7 mm
1.2 - 1.7 mm
45°
65°
0.03 mm
106.20 - 106.60 mm
105.30 - 105.70 mmExhaust
0.1 - 0.7 mm
1.5 - 2.0 mm
45°
65°
0.03 mm
106.20 - 106.60 mm
105.30 - 105.70 mm
Standard
Repair
w = 38.0 ± 0.2 mm
Matching Valves
Camshaft cam basic dia.
Size (x)
Size (x)
Size (x)19.5 - 20.3mm
20.4 - 21.4mm
21.4 - 21.97mmw = 37.6 ± 0.2 mm Camshaft cam basic dia.
19.5 - 20.1mm
20.2 - 21.2mm
21.2 - 21.97mmValve to be used
Use machined valve,
if needed
use pair valve
1 = 105.5 ± 0.2mm
Reuse valve
Use standard size
valve
I = 106.4 ± 0.2mm
Commercial Tools
Hunger
D-8000 München 70
Type Ventilknecht K2000
Order No. 221 00 100
Hunger
D-8000 München 70
Type VDS 1A
Order No. 236 03 308
Hunger
D-8000 München 70
Order No. 217 93 601 Cylinder Head Clamping Devie
Valve Seat Turning Tool
Test Sat for Valves
Page 438 of 1463
1B3-136 OM600 ENGINE MECHANICAL
I Length of Valve
w Camshaft Cam Basic Circle Diameter
x Distance (Camshaft basic bore - valve stem)y Half Camshaft Basic Bore Diameter
z Distance (Cylinder head cover parting surface - .
valve stem)
8. Measure ‘x’ (Camshaft basic bore - valve stem).
‘x’ = ‘z’ - ‘y’
9. Determine the valve to be used.
(See ‘Matching valves’)
Example)Measured value ‘w’ = 38.2 mm
Measured value ‘z’ = 36.5 mm
Value ‘y’ = 15.5 mm
‘x’ = 36.5 - 15.5 = 21.0 mm
In the case of a camshaft cam basic circle diameter
‘w’ = 38.2mm and a distance ‘x’ = 21.0mm, the installed
valve may be used.
Page 446 of 1463
1B3-144 OM600 ENGINE MECHANICAL
10. Check the TDC marking of OT on the crankshaft.8. Install the chain tensioner.
Tightening Torque 80 Nm
Notice
Replace the seal.
Before installation, by pumping in the oil approx. 10 times,
fill the oil.
9. Remove the engine lock.
Notice
If max. length ‘L’ of the 12-sided bolt exceeds 53.6mm,
replace it.
Page 456 of 1463
1B3-154 OM600 ENGINE MECHANICAL
4. Position the no. 1 cylinder at the TDC of OT.
6. Pull out the bearing pins (9, 11) with sliding hammer and
remove the guide rail 10.
Sliding Hammer 116 589 20 33 00
Threaded Pin 116 589 02 34 00
Installation Procedure
1. Apply collar of both bearing pins with sealing compound.
2. Position the guide rail and insert the bearing pins.
3. Install the camshaft sprocket.
Tightening Torque 10 Nm
Notice
If the max. length ‘L’ of the 12-sided bolt exceeds 53.6mm,
replace it.
Page 464 of 1463
1B3-162 OM600 ENGINE MECHANICAL
Notice
If the max. length ‘L’ of the stretch bolt exceeds 53.6mm,
replace it.
5. Fit the oil pump chain (9) on the crankshaft sprocket (12)
and insert the oil pump sprocket (8) into the oil pump chain
and then install it on the oil pump.
Notice
The curved side of the oil pump sprocket should face the
oil pump.
6. Insert the woodruff key (15).
7. Install the guide rail (16). Attach the spring (17) to guide rail
and to tensioning lever together onto the bearing pins (5,6).
Notice
Ensure that the spring is correctly located in the guide rail
(arrow).