Page 613 of 2053
1B3 -- 64 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Tools Required
116 589 03 07 00 Socket Wrench
Removal Procedure
1. Remove the fan clutch and cooling fan belt pulley.
2. Drain the engine oil completely.
3. Remove the oil dipstick tube bracket bolts.
4. Remove the crankshaft pulley.
5. Loosen the bolt (1) and then remove the cylinder
head cover (2) and gasket.
6. Remove the vacuum pump.
7. Detach the closing cover (20). Remove the bolts(21)
and then remove the guide pulley (22).
8. Remove the guide pulley bracket (24).
Page 615 of 2053
1B3 -- 66 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
13. Remove the camshaft.
14. Remove the socket bolts(4) in the chain box.
Socket Wrench 115 589 03 07 00
15. Remove the injection pump.
Notice
See the “Removal of fuel injection pump”.
16. Remove the oil pan bolts (8, 9) in the area of the tim-
ing case cover (14).
17. Slightly loosen the remaining oil pan bolts.
18. Remove the timing case cover (19) bolts and then
remove the timing case cover (14).
Notice
Be careful not to damage the cylinder head gasket
or oil pan gasket.
Page 617 of 2053
1B3 -- 68 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
5. Install the flange, vibration damper and crankshaft
belt pulley.
Notice
Replace front radial seal if necessary.
6. Install the generator bracket.
TighteningFront25 N∙m (18 lb-ft)Tightening
To r q u eSide25 N∙m (18 lb-ft)
7. Install the generator.
TighteningTorqueUpper--25N∙m (18 lb-ft)TighteningTorqueLow -- 25 N∙m (18 lb-ft)
8. Install the cylinder head cover.
Tightening Torque10 N∙m(89lb-in)
9. Tighten the injection pump mounting bolts.
Tightening Torque23 N∙m (17 lb-ft)
Page 619 of 2053
1B3 -- 70 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
15. Install the guide pulley (22) and fit the closing cover
(20).
Tightening Torque23 N∙m (17 lb-ft)
16. Replace the gasket (3) and install the cylinder head
cover (2).
Tightening Torque10 N∙m(89lb-in)
17. Install the cooling fan belt pulley and fan clutch.
18. Install the belt tensioning device and then install the
belt.
19. Install the cooling fan.
20. Fill the engine oil and check oil leaks by running the
engine.
Page 650 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 101
D AEW OO M Y_2000
HYDRAULIC VALVE CLEARANCE COMPENSATION ELEMENT CHECK
1 Cylinder Head Cover
2 Bolt 10N∙m (89 lb-in) .....................
3 Gasket Replace..........................4 Valve Tappet
5 Cylinder Head
Page 651 of 2053

1B3 -- 102 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
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.
Page 652 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 103
D AEW OO M Y_2000
VALVE TAPPETS
Preceding Work : Removal of camshaft
1 Valve Tappet
2 Cylinder Head
3 Oil Gallery4 Seal Replace.............................
5 Screw Plug
Tools Required
102 589 03 40 00 Magnetic Bar
Page 655 of 2053
1B3 -- 106 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
VALVE SPRINGS (CYLINDER HEAD REMOVED)
Cylinder Head Removed
1 Valve Tappet
2 Valve Cotters
3 Spring Retainer
4 Valve Spring Check, replace if necessary....
5 Cylinder Head6 Stud Bolt 12N∙m (106 lb-in) ................
7Washer
8 Nut Replace, 25N∙m (18 lb-ft) ..............
9 Exhaust Manifold