Page 638 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 89
D AEW OO M Y_2000
8. Thoroughly clean the oil gallery.
9. Select a proper new bearing shells with reference to
table.
10. Coat the new bearing shells with oil and insert into
the crankcase and into the crankshaft bearing caps.
Notice
Do not mix up upper and lower crankshaft bearing
shells.
11. Install the bearing caps according to marking and
tighten the 12--sided stretch bolts.
Tightening Torque35-- 40 N∙m (26-- 30 lb-ft)
Notice
No. 1 is vibration damper side.
12. Measure crankshaft bearing diameters (E).
Extension 366 589 00 21 05
13. Measure at 3 points (A, B and C) and if the average
value of B and C is less than A’s value, the average
value of B and C is the mean value and if more than
A’s value, A’s value is the mean value.
14. Measure crankshaft bearing journal diameter (F).
Notice
When measured in A and B, the runout should not
exceed 0.010mm.
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OM600 ENGINE MECHANICAL 1B3 -- 91
D AEW OO M Y_2000
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.
Page 644 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 95
D AEW OO M Y_2000
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).
Page 656 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 107
D AEW OO M Y_2000
Tools Required
102 589 03 40 00 Magnetic Bar
116 589 06 63 00 Magnetic Finger
601589015900AssemblingBoard
601 589 02 59 00 Supporting Bridge
667589003100PressLever
Removal & Installation Procedure
1. Remove the nuts (8) uniformly and then remove the
washer (7), exhaust manifold (9) and gasket.
Installation Notice
Check the stud bolt (6) for damage and replace if
necessary.
Tightening Torque12 N∙m (106 lb-in)
Replace the gasket and tighten the nuts (8).
Tightening Torque25 N∙m (18 lb-ft)
2. Install the assembling board (11) to the cylinder
head with 4 cylinder head blots (10).
Assembling Board 601 589 01 59 00
3. Pull out the valve tappet (1) with magnetic bar (12).
Notice
Place the valve tappets upside down (open end up-
ward).
Magnetic Bar 102 589 03 40 00
4. Install the supporting bridge (13) on the cylinder
head (5).
Supporting Bridge 601 589 02 59 00
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1B3 -- 138 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Tools Required
001589532100 DialGauge
363 589 02 21 00 Dial Gauge Holder
366589002105 Extension
Measurement Procedure
1. Remove the cylinder head cover.
2. Rotate the engine in the direction of engine rotation
until the intake valve of NO.1 cylinder is completely
closed. The cam lobe faces up (arrow).
Notice
Do not rotate the engine at the bolt of the crankshaft
sprocket. Do not rotate the engine in the opposite di-
rection of engine rotation. If do, thiswill cause seri-
ous measuring errors.
3. Install the dial gauge holder and dial gauge (7) with
the extension (8) to the cylinder head and position
the tracer pin (9) onto the valve tappet (intake valve
of cylinder NO.1) with a preload of min. 3mm.
Notice
The tracer pin should be positioned exactly vertical.
Dial gauge Holder 363 589 02 21 00
Dial Gauge 001 589 53 21 00
Extension 366 589 00 21 05
4. Set the dial gauge to ’0’.
5. Rotate the engine further in direction of rotation until
the dial gauge has moved back by 2mm (valve lift) to
1mm.
6. Check the timing.
NewAT DC 11 . 3 3_
After approx. 20,000kmAT DC 1 2_
Notice
If timing is out standard, the camshaft should be
checked for wear and the timing chain for stretch. If
adifferenceofmorethan4_exists, the timing chain
should be replaced.
7. Replace the gasket and install the cylinder head
cover.
Tightening Torque10 N∙m(89lb-in)
Page 692 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 143
D AEW OO M Y_2000
5. Tighten the camshaft bearing cap bolts acccording
to installation order.
Tightening Torque25 N∙m (18 lb-ft)
Notice
Tighten the No. 1 bolts (light arrow) by one revolu-
tion in stages first and then tighten the No.2 bolts
(dark arrow).
OM 662LA
OM 661LA
6. Install the camshaft sprocket to be aligned the mark-
ings of the camshaft / camshaft bearing cap (arrow).
Notice
Align the alignment marks on the timing chain and
sprocket.
7. Tighten the camshaft sprocket bolt.
Tightening Torque25 N∙m (18 lb-ft) + 90_
Page 693 of 2053
1B3 -- 144 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Notice
If max. length ’L’ of the 12-- sided bolt exceeds
53.6mm, replace it.
8. Install the chain tensioner.
Tightening Torque80 N∙m (59 lb-ft)
Notice
Replace the seal.
Before installation, by pumping in the oil approx. 10
times, fill the oil.
9. Remove the engine lock.
10. Check the TDC marking of OT on the crankshaft.