Page 630 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 81
D AEW OO M Y_2000
Notice
The sealing lip of the repair radial seal is offset to the
inside by 2mm to ensure that is does not run in any
groove which the standard radial seal may have left
on the crankshaft flange.
A Standard Radial Seal
B Repair Radial Seal
Replacement Procedure
1. Pull out the radial seal (1) and be careful not to dam-
age the sealing surface of timing case cover.
2. Thoroughly clean the mounting bore of the radial
seal.
3. Coat a little oil on the sealing lip of new radial (1) and
contact surface.
Notice
Don’t use grease.
4. Install the radial seal (1) by using a sleeve (4).
Notice
Align the groove of sleeve and woodruff key(arrow).
Sleeve 601 589 03 14 00
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1B3 -- 92 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
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 658 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 109
D AEW OO M Y_2000
VALVE SPRINGS (CYLINDER HEAD INSTALLED)
Preceding Work : Removal of camshaft
1 Valve Tappet
2 Valve Cotters
3 Spring Retainer4 Valve Spring Check, replace if necessary....
5 Timing Chain
6 Cylinder Head
Notice
Remove the valve springs only when the piston is at
TDC.
Tools Required
102 589 03 40 00 Magnetic Bar
116 589 06 63 00 Magnetic Finger
603 589 01 40 00 Holding Wheel
667 589 00 31 00 Press Lever
667 589 02 63 00 Supporting Bar
Page 659 of 2053
1B3 -- 110 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Removal & Installation Procedure
1. Remove the valve tappet (1) with magentic lifter.
Notice
Place the valve tappets upside down (open end up-
ward)
Magentic Liter 102 589 03 40 00
2. Install the holding wheel (7) into the timing chain of
camshaft sprocket piston.
Holding Wheel 603 589 01 40 00
3. Position the piston of relevant cylinder at TDC.
4. Install the supporting bar (8).
Supporting Bar 667 589 02 63 00
5. Using the press lever (9), press the spring retain-
er(3) downward and remove the valve cotters (2)
with magnetic finger (10).
Notice
Be careful not to damage guide bore of the valve
tappet.
Press Lever 667 589 00 31 00
Magnetic Finger 116 589 06 63 00
Page 660 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 111
D AEW OO M Y_2000
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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1B3 -- 114 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Replacement Procedure
1. Remove the valve tappet (1) with magnetic lifter.
Notice
Place the valve tappets upside down (open end up-
ward).
Magnetic Lifter 102 589 03 40 00
2. Install the holding wheel (7) into the timing chain
(11).
Holding Wheel 603 589 01 40 00
3. Position the piston of relevant cylinder at TDC.
4. Install the supporting bar (8).
Supporting Bar 667 589 02 63 00
5. Using press lever (9), press the spring retainer(3)
downward and remove the valve collets with mag-
netic finger (10).
Press Lever 667 589 00 31 00
Magnetic Finger 116 589 06 63 00
Page 686 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 137
D AEW OO M Y_2000
CAMSHAFT TIMING TEST
Preceding Work : Removal of glow plug
1 Cylinder Head Cover
2 Bolt 10N∙m (89 lb-in) .....................
3 Gasket Replace..........................4 Valve Tappet
5 Cylinder Head
Timing
CditifhftIntake valveExhaust valveCondition of camshaftOpenCloseOpenClose
NewAT DC 11 . 3 3_ABDC 17_BBDC 28_BTDC 15.25_
After approx. 20,000kmAT DC 1 2_ABDC 18_BBDC 27_BTDC 14_
* At 2mm of valve lifting stroke.
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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)