Page 337 of 1463
OM600 ENGINE MECHANICAL 1B3-35
TDC (TDC SENSOR BRACKET) SETTING
Preceding Work : Removal of No.1 cylinder prechamber
1 Measuring Device
2 Dial Gauge
3 Cylinder Head
4 Piston................................................Set at TDC
Tools Service
001 589 32 21 00 Dial Gauge
601 589 07 21 00 Deqth Gauge
667 589 01 21 00 Fixing Device
Notice
lThe TDC sensor bracket must be adjusted in case of
followings.
lWhen replacing the TDC sensor bracket.
lWhen replacing the crankshaft, the hub or the vibration
damper.
lWhen replacing or installing the timing case cover.
lAfter engine overhauling.
*If the cylinder head is removed, the measuring pin of the
dial gauge can be positioned on the piston crown.
This is done by placing the magnetic dial holder on the
mating surface of the crankcase.
Page 338 of 1463

1B3-36 OM600 ENGINE MECHANICAL
Setting (with cylinder head installed)
1. Remove the prechamber of No. 1 cylinder.
2. Position the piston of No.1 cylinder at BTDC 10.
3. Install the measuring device into the prechamber bore and
position the dial gauge with a preload of 5mm.
Dial Gauge 001 589 53 21 00
Depth Gauge 601 589 07 21 00
4. Slowly rotate the crankshaft in the direction of engine rotation
until the large pointer on the dial gauge stops (TDC position).
Notice
The position of TDC is when the large pointer on the dial
gauge is stopped before moving back.
5. remove the reinstall the measuring device and position the
dial gauge scale at ‘0’.
6. Slowly rotate the crankshaft in the direction of engine rotation
until the dial gauge has moved back (counterclockwise) by
3.65mm.
7. Insert fixing device into the sensor bracket.
Notice
The pin on the vibration damper must engage into the slot
of the fixing device.
Fixing Device 667 589 01 21 00
8. If the pin does not engage, adjust the setting of the sensor
bracket by removing and tightening of the sensor bracket
bolts.
Tightening Torque 10 Nm
Notice
The timing mark on the damper must be positioned at ATDC
20.
Page 339 of 1463

OM600 ENGINE MECHANICAL 1B3-37
CYLINDER HEAD
1 Fuel Injection Pipe.....................................18Nm
2 Cylinder Head
3 Gasket ................................................... Replace
4 Bolt............................................................25Nm
5 Washer
6 Clamp
7 Heater Feed Pipe
8 Bolt
9 Washer
1 0 Bolt
11 Nozzle Washer....................................... Replace
12 Fuel Injection Nozzle............................35-40 Nm
13 Hexagon Socket Bolt................................. 25 Nm
14 Washer
1 5 Bolt........................................................... 25 Nm
16 Cylinder Head Bolt..............................See Table
17 Cylinder Head Cover
1 8 Bolt........................................................... 10 Nm
19 Gasket
2 0 Camshaft21 Camshaft Drive Sprocket....................... Replace
22 Washer
23 Bolt(12-Sided) ..................................25Nm + 90°
24 Sliding Rail
25 Sliding Rail Pin
26 Sliding Rail Pin
27 Chain Tensioner....................................... 80 Nm
28 Gasket ................................................... Replace
29 Cooling Fan.............................................. Check
30 Hexagon Socket Bolt................................. 45 Nm
31 Tensioning Lever
3 2 Bolt........................................................... 25 Nm
3 3 Bolt
34 Nut ............................................................ 23 Nm
35 Fuel Filter
36 Turbo Charger
37 Intake Duct
38 Gasket ................................................... Replace
39 Intake Manifold
Page 340 of 1463
1B3-38 OM600 ENGINE MECHANICAL
000 589 77 03 00 Box Wrench Insert
001 589 65 09 00 Socket Wrench Insert
102 589 03 40 00 Magnetic Bar
116 589 02 34 00 Threaded Pin
116 589 03 07 00 T Type Socket Wrench
116 589 20 33 00 Sliding Hammer
601 589 00 10 00 Cylinder Head Bolt Wrench
602 589 00 40 00 Engine Lock
603 589 00 40 00 Counter Holder
Tools Required
Cylinder Bolts (12-sided socket head)
(Engine cold)
M8 Cylinder Head Bolts
Tightening Torque
stage1
stage2
stage310 Nm
35 Nm
180°
25 Nm
Tightening Sequence for Cylinder Head Bolts
OM 662LA Engine
OM 661LA Engine
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 342 of 1463
1B3-40 OM600 ENGINE MECHANICAL
Disassembly Procedure
1. Completely drain the coolant from the radiator and cylinder
block.
2. Remove the cooling fan shroud.
3. Hold the fan with counter holder and remove the bolt and
then remove the cooling fan.
Notice
Keep the fan in vertical position.
Counter Holder 603 589 00 40 00
5. Remove the nut.
6. Remove the nut on the tensioning lever and insert the
rod(F12 ´ 180mm). By pushing the rod to the arrow direction,
pull back the bolt.
7. Push the tensioning lever to the opposite direction to release
the spring tension and remove the poly V-belt. 4. Remove the bracket oil dipstick tube.
Page 343 of 1463
OM600 ENGINE MECHANICAL 1B3-41
8. Remove the air cleaner cover and element and then
remove the air cleaner housing.
9. Remove the oil return hose and plug.
Notice
Cover them to prevent chips from coming into.
10. Unscrew the EGR pipe mounting bolts onto the exhaust
manifold.
11. Remove the duct bracket from the cylinder head.
12. Unscrew the intake duct mounting bolts onto the intake
manifold.
13. Separate the connecting rod from the control lever.
Page 344 of 1463
1B3-42 OM600 ENGINE MECHANICAL
14. Pull out the accelerator control linkage.
15. Remove the fuel injection line(1) from the fuel injection
nozzle(12).
Box Wrench Inset 000 589 77 03 00
16. Remove the fuel injection line from the fuel injection pump.
Box Wrench Insert 000 589 77 03 00
17. Remove the bracket mounting bolts and then remove the
fuel injection line(1).