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1B3-104 OM600 ENGINE MECHANICAL
Replacement Procedure
1. Pull out the valve tappet (1).Magnetic Bar 102 589 03 40 00
2. Remove the plug (5) and blow compressed air into the oil gallery (3). At this time, check that the outlet bores(arrow)
at the seat of the valve tappet are clear.
3. Replace the seal (4) and tighten the plug (5).
4. Insert the new valve tappet.
NoticeCoat the valve tappet with oil.
Page 376 of 1574
OM600 ENGINE MECHANICAL 1B3-111
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) facingdown 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
Page 395 of 1574
1B3-130 OM600 ENGINE MECHANICAL
10. Measure distance ‘z’ (cylinder head cover parting surface
- valve stem).
5. Clean the vales, valve seats and valve guides.
6. Coat the valve stem with oil and insert it into valve guide.
7. Insert the valves (1) into the valve guides according to
marking.
8. Measure amount by which the valve arrears ‘a’.
Arrears ‘a’ 0.1 - 0.7 mm
Notice If out of standard, replace the valve seat ring.
9. Measure camshaft cam basic diameter (w).
Diameter ‘w’ 38 ± 0.2 mm
or 37.6 ± 0.2 mm
Page 404 of 1574
OM600 ENGINE MECHANICAL 1B3-139
CAMSHAFT Preceding Work : Removal of cylinder head cover
1 Bolt............................................................ 25Nm
2 Washer
3 Camshaft Bearing Cap
4 Camshaft
5 Dowel Pin
6 Locking Washer
7 Timing Chain 8 Cylinder Head
9 Oil Pan
10 Camshaft Sprocket
11 Washer
12 12-Sided Bolt (M11) ... ..........Check, 25Nm + 90 °
13 Gasket ................................................... Replace
14 Chain Tensioner ........................................ 80Nm
Page 407 of 1574
1B3-142 OM600 ENGINE MECHANICAL
4. Install the camshaft bearing caps according to markings(1,2, 3 etc.).
7. Remove the camshaft bearing cap.
8. Pull off the camshaft.
Notice
Be careful not to miss front locking washer.
9. Pull out the locking washer.Notice Check the condition of locking washer and replace if
necessary.
Installation Procedure
1. Insert the locking washer.
2. Check the valve tappet and ensure that tappet moves smoothly.
3. Coat the camshaft with oil and install the camshaft onto the cylinder head so that the TDC marking (arrow) is positioned
upward vertically.
Page 409 of 1574
1B3-144 OM600 ENGINE MECHANICAL
10. Check the TDC marking of OT on the crankshaft.8. Install the chain tensioner.
Tightening Torque 80 Nm
Notice Replace the seal.Before installation, by pumping in the oil approx. 10 times, fill the oil.
9. Remove the engine lock.
Notice If max. length ‘L’ of the 12-sided bolt exceeds 53.6mm,
replace it.
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1B3-146 OM600 ENGINE MECHANICAL
Notice Always install the chain tensioner to be filled with oil. Place the chain tensioner in engine oil up to over the collar on the hexagon head with the thrust pin facing up. Slowly push down the thrust pin as far as the stop 7~10 times with the aid of a press or a column drill
Faulty chain tensioners should be replaced completely.
3 Screw Plug
4 Aluminum Gasket
5 Ball
6 Ball Guide
7 Compression Spring
8 Compression Spring
9 Housing
10 Thrust Pin 11 Valve Disc
12 O-Ring
13 Snap Ring
14 Compression Spring
15 Filler
A Feed Bore from Cylinder Head
B To Oil Pan
Page 421 of 1574
1B3-156 OM600 ENGINE MECHANICAL
TIMING CASE COVER GUIDE RAIL Preceding Work : Removal of cylinder head cover1 Bearing Pin
2 Bearing Pin
3 Guide Rail
4 Oil Pump Chain 5 Crankshaft
6 Spring
7 Bushing
8 Tensioning Lever