Page 341 of 1463
OM600 ENGINE MECHANICAL 1B3-39
Length(L) When New
80mm
102mm
115mm Thread Dia.
M10
M10
M10Max. Length(L)
82mm
104mm
117mm
The twelve-sided socket head bolts are tightened with each
stages of torque and torque angle.
It is not necessary to retighten the cylinder head bolts at
the 1000~1500km inspection or after 1000~1500km of
repairs.
Notice
The cylinder head may only be removed when the engine
has cooled down. The cylinder head is removed together
with the exhaust manifold. As the cylinder head bolts
undergo a permanent tightening. They require to be
replaced if they exceed the maximum lengthes indicated
in the table.
Page 355 of 1463
OM600 ENGINE MECHANICAL 1B3-53
5. Tighten the cylinder head bolts to specified torque and
torque angle.
OM 662LA
OM 661LA
6. Install the socket bolts in the chain box.
Tightening Torque 25 Nm
Stage 1
Stage 2
Torque angle
Wait for
Torque angle15 Nm
35 Nm
90°
10 minutes
90°
7. Connect the vacuum pipe to the thermo valve.
Page 356 of 1463
1B3-54 OM600 ENGINE MECHANICAL
8. Connect the vacuum lines to the vacuum pump.
9. Install the fuel filter and connect the pipe.
Tightening Torque 25 Nm
Notice
Be careful not to be confused the connections and hoses.
10. Connect the fuel pipe to the injection pump.
11. Install the sliding rail(24) and insert the sliding rail pins(25,
26).
Notice
Apply sealing compound on the each collar of the sliding
rail pins.
Sliding Hammer 116 589 20 33 00
Threaded Pin 116 589 02 34 00
Page 357 of 1463
OM600 ENGINE MECHANICAL 1B3-55
12. Install the idle pulley and fit the closing cover.
Tightening Torque 25 Nm
13. Insert the tensioning lever(31) and install the spring.
14. Install the damper.
Tightening Torque 23 Nm
Notice
Insert the tensioning lever bolts onto the mounting hole.
15. Insert the locking washer.
16. Inspect the valve tappet and check that the tappet moves
smoothly.
Page 358 of 1463
1B3-56 OM600 ENGINE MECHANICAL
17. Coat the camshaft with oil and install the camshaft on the
cylinder head to be TDC mark(arrow) upward.
18. Measure the axial end play of the camshaft.
End Play 0.06 - 0.21mm
Notice
If out of standard, adjust it with the proper thickness of
locking washer.
19. Install the bearing caps on the camshaft according to the
number on the caps.
20. Tighten the bearing cap bolts according to the numerical
sequence.
Tightening Torque 25 Nm
Notice
Tighten the No. 1 bolts(light arrow) first and then tighten
the No. 2 bolts(dark arrow) stage by stage.
OM662LA
OM661LA
Page 359 of 1463
OM600 ENGINE MECHANICAL 1B3-57
21. Position the camshaft on marking and install the camshaft
sprocket.
Notice
Align the alignment marks on the chain and sprocket.
23. Install the camshaft sprocket bolt. 22. Check the TDC position of the crankshaft.
Tightening Torque 25 Nm + 90°
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1B3-58 OM600 ENGINE MECHANICAL
24. Install the exhaust manifold and gasket.
25. Install the turbocharger.
26. Install the exhaust pipe onto the turbocharger.
Tightening Torque 25 Nm
Notice
Measure the max. length ‘L’ and replace the bolt if it exceeds
53.6mm.
Page 361 of 1463
OM600 ENGINE MECHANICAL 1B3-59
27. Replace the seal and then install the chain tensioner.
Tightening Torque 80 Nm
28. Remove the engine lock.
29. Insert the nozzle washer into the hole to face round part
downward.
30. Install the fuel injection nozzle.
Tightening Torque 40 Nm
31. Connect the fuel hose.
32. Install the cable channel and connect the cables to glow
plugs.