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OM600 ENGINE MECHANICAL 1B3 -- 91
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Notice
If the max. length of bolts(L) exceed 63.8mm, re-
place them.
19. Coat the new crankshaft with engine oil and place it
on the crankcase.
20. Install the crankshaft bearing caps according to
marking and tighten the bolts.
Tightening Torque55 N∙m (41 lb-ft) + 90_
Notice
Install from No. 1 cap.
22. Rotate the crankshaft with hand and check whether
it rotates smoothly.
23. Measure crankshaft bearing axial clearance.
Clearance0.100 -- 0.245 mm
Notice
If the clearance is out of standard, adjust the axial
clearance of crankshaft bearing by replacing the
thrust washers.
Dial Gauge 001 589 53 21 00
Dial Gauge Holder 363 589 02 21 00
Notice
The same thickness of thrust washers should be
installed on both sides of the thrust bearing.
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1B3 -- 92 OM600 ENGINE MECHANICAL
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24. Insert the new connecting rod bearing shells into the
connecting rod and connecting rod bearing cap and
tighten the 12--sided stretch bolts (11).
Tightening Torque40 N∙m (30 lb-ft) + 90_
25. Measure inner diameter of connecting rod bearing.
26. Measure connecting rod bearing journal diameter
(K).
Notice
Refer to measurement of the crankshaft bearing
journal diameter.
27. Measure the radial clearance (L) of the connecting
rod bearing.
Example) Measured value ’J’ = 47.700mm
Measured value ’K’ = 47.653mm
——————————————
Clearance ’L’ = 0.047mm
Radial Clearance ’L’0.026 -- 0.068mm
Notice
If the clearance is out of standard, adjust the radial
clearance of connecting rod bearing by replacing the
connecting rod bearing shells.
28. Remove the connecting rod bearing cap.
29. Install the piston.
30. Rotate the crankshaft by hand and check whether it
rotates smoothly.
31. If the bearings are damaged,
-- replace the oil presser relief valve.
-- clean the oil pump and oil filter housing carefully
and replace the hose if necessary.
Notice
After assembling the engine, check the camshaft
timing, adjust the start of fuel injection and check the
TDC sensor bracket setting.
32. Fill oil and run the engine and then check the oil
pressure and oil level.
Notice
Install the original oil filter element and then change
the engine oil and oil filter element after 1,000 --
1,500km.
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OM600 ENGINE MECHANICAL 1B3 -- 93
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FLYWHEEL
Preceding Work : Removal of transmission
Removal of the clutch
1OilPan
2 Straight Pin
3 Flywheel4 12-- Sided Stretch Bolt
Check, 45N∙m (33 lb-ft)+90_ ...............
5 Drive Plate (Automatic Transmission)
6 Flywheel (Automatic Transmission)
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1B3 -- 102 OM600 ENGINE MECHANICAL
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Checking
Notice
The noise which continues short time during short
travel (frequent starting of the engine) or engine
starting after a long time storage is normal operating
conditions. So, it does not need to be repaired. De-
termine the malfunctions in valve clearance com-
pensation device with noise through following tests.
If defective, replace as respectively.
1. Run the engine at more than 3000rpm for approx. 4
minutes.
2. Stop the engine. After 5minutes, check the engine
oil level and adjust if necessary.
3. Remove the cylinder head cover.
4. Check the valve tappets at TDC position of each cyl-
inders.
5. Using a drift, lightly press the valve tappet and mea-
sure clearance between the cam and valve tappet.
Notice
If the clearance exceeds 0.4mm, replace the valve
tappet.
6. If a valve tappet moves down too far in comparison
to the others, replace the valve tappet.
7. Rotate the engine and check the remaining valve
tappets.
Notice
DUnnecessary rotation of the engine will damage
the valve tappets.
DDo not rotate the engine by using the camshaft
sprocket bolt or to the opposite direction of the
engine rotation.
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1B3 -- 104 OM600 ENGINE MECHANICAL
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Replacement Procedure
1. Pull out the valve tappet (1).
Magnetic Bar 102 589 03 40 00
2. Remove the plug (5) and blow compressed air into
the oil gallery (3). At this time, check that the outlet
bores(arrow) at the seat of the valve tappet are
clear.
3. Replace the seal (4) and tighten the plug (5).
4. Insert the new valve tappet.
Notice
Coat the valve tappet with oil.
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OM600 ENGINE MECHANICAL 1B3 -- 111
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6. Remove the spring retainer(3) and spring (4).
7. Check the valve spring and replace if necessary.
8. Insert valve spring (4) with the color coding (arrow)
facing down and insert valve spring Retainer(3).
9. By press the spring retainer(3) with press lever (90),
install the valve cotters with magnetic finger (10).
Press Lever 667 589 00 31 00
Magnetic Finger 116 589 06 63 00
10. Remove the supporting bar.
11. Remove the holding wheel (7) from the timing chain
(5).
Holding Wheel 603 589 01 40 00
13. Coat the valve tappet with oil and install it.
Magnetic Bar 102 589 03 40 00
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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 -- 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.).