Page 137 of 1463
1B1-64 M162 ENGINE MECHANICAL
CAMSHAFT TIMING POSITION
Preceding Work : Removal of cylinder head cover
Removal of cylinder head front cover
1 Chain Tensioner Assembly
2 Exhaust Camshaft Sprocket
3 Upper Guide Rail4 Cylinder Head Front Cover
5 Wrench (Special Tool)
6 Adjustment Hole Fitting Pin (
f4.0 mm)
Page 138 of 1463

M162 ENGINE MECHANICAL 1B1-65
Adjustment Procedure
1. Position the No.1 cylinder to BTDC 30° .
2. Remove the chain tensioner.
3. Remove the exhaust camshaft sprocket.
4. Align the intake and exhaust camshaft flange hole with the
cylinder head upper surface.
lIntake Side : 3 o’clock direction
lExhaust Side : 9 o’clock direction
5. Secure the intake and exhaust camshaft.
6. Position the piston of No.1 cylinder at TDC (OT) by turning
the crankshaft.
7. Turn the camshaft adjuster of the intake camshaft to the
left as much as possible (cam adjuster ‘retarded’ position).
8. Install the chain to the intake camshaft sprocket.
Notice
Timing chain must be placed on the guide rail in gear case
cover. Tools Required
104 589 01 01 00Spanner
Inspection
1. Position the No.1 cylinder piston to TDC (OT) by turning
the crankshaft.
Notice
When the OT mark on vibration damper is aligned with timing
gear case cover, the intake and exhaust cam of cylinder
will make the slope to the center and will face up. In this
way, the adjustment hole of the intake and exhaust camshaft
will match in line with the cylinder head upper end, at 3
o’clock, and 9 o’clock direction each other.
2. Check the timing as below procedure;
- Check if the camshaft adjustment hole is positioned to 3
o’clock direction at the intake side and to 9 o’clock
direction at the exhaust side, respectively and align with
the cylinder head mating surface.
- At this condition, check if the OT mark on vibration
damper aligns with the marker on the timing gear case.
Page 139 of 1463
1B1-66 M162 ENGINE MECHANICAL
11. Check the camshaft timing.The sprocket bolt is designed to be used only once, so
replace with new one.
10. Install the chain tensioner.
Installation NoticeTightening Torque1st step 18 - 22 Nm
2nd step 90° ± 5°
9. Install the chain to the exhaust camshaft sprocket and
install it to the camshaft.
Installation Notice (Sprocket Bolt)
Tightening
TorqueScrew Plug
40 Nm
Tensioner Assembly
72 - 88 Nm
Page 140 of 1463
M162 ENGINE MECHANICAL 1B1-67
VALVE SPRING
Preceding Work : Removal of camshaft
Removal of spark plug
1 Valve Tappet Assembly
2 Valve Cotter
3 Upper Retainer
4 Valve Spring..........Check, Replace if necessary
5 Valve Stem Seal
6 Lower Retainer7 Connecting Hose
8 Thrust Piece
9 Slide
10 Adjust Bolt
11 Lever Pusher
12 Supporting Bar
Page 141 of 1463
1B1-68 M162 ENGINE MECHANICAL
Tools Required
111 589 01 59 00 Supporting Bar
111 589 18 61 00 Lever Pusher
111 589 25 63 00 Thrust Piece
116 589 06 63 00 Magnetic Finger
Removal & Installation Procedure
1. Place the supporting bar (12) and the slide (9) at the
camshaft bearing cap (Nos 1 & 7/8&14) and tighten them
with the bearing cap bolt.
Installation Notice
2. Turn the crankshaft to position the each cylinder piston at
TDC.
5. Install the engine lock to the ring gear to prevent the
crankshaft from rotating.
6. Blow up with compressed air.Notice
lRemove the valve spring only at TDC.
lAlways rotate the crankshaft by holding the chain to
prevent from timing chain damage and tangling, and for
smooth rotation.
3. Remove the valve tappet (1) using the magnetic finger.
4. Install the leakage tester connecting hose to the spark plug
hole.
Supporting Bar 111 589 01 59 00
Tightening Torque 22.5 - 27.5 Nm
Mark on The Vibration Damper
OT
120°
240°Cylinder
1, 6
2, 5
3, 4
Page 142 of 1463
M162 ENGINE MECHANICAL 1B1-69
8. Install the lever pusher (11) and the thrust piece (8) to the
slide (9).
13. Remove the valve cotter (2) using either the pincette (13)
or magnetic finger.
Lever Pusher 111 589 18 61 00
Magnetic Finger 116 589 06 63 00
9. Mount the thrust piece (8) vertically to the valve spring
retainer (3).
10. Make the thrust piece (8) and the slide (9) perpendicular
to each other.
11. Secure the slide (9) by turning the adjust bolt (10).
12. Press the valve spring (4) by using the lever pusher (11).
14. Remove the upper retainer (3) and the valve spring (4).
15. Remove the valve stem seal and replace if necessary.
Notice
Check the valve stem seal and replace if necessary.
16. Remove the lower retainer (6).
Notice
Check the retainer for damages and replace with a new
one if necessary.
17. Installation should follow the removal procedure in the
reverse order.
Page 143 of 1463
1B1-70 M162 ENGINE MECHANICAL
Test (Upper and Lower Valve Tappet and Valve
Cotter)
lUpper Valve Spring Retainer
lLower Valve Spring Retainer
lValve Cotter
12.3 (D)(d) 8.5
Size (mm)
Thickness (mm)
(a) 0.8 - 1.0
9.2 - 9.8 (H)(B) 9.0
Size (mm)
Page 144 of 1463
M162 ENGINE MECHANICAL 1B1-71
VALVE STEM SEAL
Preceding Work : Removal of valve spring
1 Drift (Special Tool)
2 Valve Stem Seal
3 Protective Sleeve
Drift 119 589 00 43 00 Pliers 104 589 00 37 00
Tools Required
104 589 00 37 00 Pliers
119 589 00 43 00 Drift
Replacement Procedure
1. Remove the valve stem seal (2) using the pliers.
Notice
Check the valve stem seal for damage and replace if
necessary.
2. Coat the valve stem seal with oil and assemble it with the
protective sleeve.
3. Insert the valve stem seal by pressing it with the drift.