Page 625 of 2053
1B3 -- 76 OM600 ENGINE MECHANICAL
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Removal Procedure
1. Remove the starter motor and install the engine lock
into the wheel ring gear.
Engine Lock 602 589 00 40 00
2. Remove the poly V-- belt.
3. Remove the cooling fan.
Notice
Keep the fan in vertical position.
4. Remove the cooling fan belt pulley (2).
5. Place alignment marks (arrow) on the vibration
damper (5) and crankshaft belt pulley (4).
6. Remove the timing sensor bracket.
Notice
Remove if necessary.
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OM600 ENGINE MECHANICAL 1B3 -- 79
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5. Install the timing sensor bracket.
Notice
See the ’TDC setting’.
6. Install the cooling fan pulley.
Tightening Torque10 N∙m(89lb-in)
7. Install the cooling fan.
8. Install the fan belt.
9. Remove the engine lock.
Page 631 of 2053
1B3 -- 82 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
CRANKSHAFT BALL BEARING
1 Spacer
2 Cover Replace............................3 Ball Bearing
4 Bolt 45N∙m (33 lb-ft)+ 90_ ................
Notice
Manual transmission only.
Tools Required
000 589 33 33 00 Counter Support
000 589 25 33 00 Internal Extractor
Removal & Installation Procedure
1. Remove the manual transmission.
2. Using a puller, pull out the locking ring and ball bear-
ing together.
Counter Support 000 589 33 33 00
Internal Extractor 000 589 25 33 00
3. Apply Loctite 241 on the new ball bearing and then
insert the ball bearing to be stopped at the spacer
ring by using a proper mandrel.
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OM600 ENGINE MECHANICAL 1B3 -- 95
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Tools Required
602 589 00 40 00 Engine Lock
Removal & Installation Procedure
1. Install the engine lock.
Engine Lock 602 589 02 40 00
2. Remove the 12-- sided stretch bolts (4).
Installation Notice
Tightening Torque45 N∙m (33 lb-ft) + 90_
Notice
If the length ’L’ of bolts exceeds 22.5mm, replace
the bolts.
3. Remove the flywheel (3), if equipped with manual
transmission.
Installation Notice
Correctly align the position of dowel pin (2).
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1B3 -- 124 OM600 ENGINE MECHANICAL
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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).
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OM600 ENGINE MECHANICAL 1B3 -- 139
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CAMSHAFT
Preceding Work : Removal of cylinder head cover
1 Bolt 25N∙m (18 lb-ft) ......................
2 Washer
3 Camshaft Bearing Cap
4 Camshaft
5 Dowel Pin
6 Locking Washer
7 Timing Chain8 Cylinder Head
9OilPan
10 Camshaft Sprocket
11 Was h er
12 12-- Sided Bolt (M11)
Check, 25N∙m (18 lb-ft)+90_ ...............
13 Gasket Replace..........................
14 Chain Tensioner 80N∙m (59 lb-ft) ............
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1B3 -- 140 OM600 ENGINE MECHANICAL
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Tools Required
602 589 00 40 00 Engine Lock
Removal Procedure
1. Rotate the crankshaft and position the piston of no.1
cylinder at TDC.
Notice
Do not rotate the crankshaft in the opposite direction
of engine rotation.
In this position, the markings of the camshaft/cam-
shaft bearing cap (arrow) must be aligned.
2. Place alignment marks on the camshaft sprocket
and timing chain.
3. Remove the starter motor and install the engine
lock.
Engine Lock 602 589 00 40 00
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1B3 -- 142 OM600 ENGINE MECHANICAL
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7. Remove the camshaft bearing cap.
8. Pull off the camshaft.
Notice
Be careful not to miss front locking washer.
9. Pull out the locking washer.
Notice
Check the condition of locking washer and replace if
necessary.
Installation Procedure
1. Insert the locking washer.
2. Check the valve tappet and ensure that tappet
moves smoothly.
3. Coat the camshaft with oil and install the camshaft
onto the cylinder head so that the TDC marking (ar-
row) is positioned upward vertically.
4. Install the camshaft bearing caps according to
markings(1, 2, 3 etc.).