Remove and install both camshafts (Z 12 XE, Z 12
XEP, Z 14 XEP, with air conditioning, LHD)
Remove
2. |
Remove air cleaner housing (1)
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Disconnect 2 wiring harness plugs
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Hot film mass air flow sensor (3), tank vent valve (2)
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Remove suction pipe (4)
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Detach engine vent hose (5)
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For Z 12 XEP, Z 14 XEP: detach air intake hose
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3. |
Disconnect 4 cable management wiring harness plugs
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Oil pressure switch (2), coolant temperature sensor (3),
camshaft sensor (4) and ignition module (1)
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Unclip wiring trough (5)
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Set wiring harness to one side
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4. |
Remove ignition module
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Remove ignition module cover
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Extract using KM-6009 (1)
Note: Do not tilt
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5. |
Remove cylinder head cover
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Detach 2 engine vent hoses
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7. |
Remove ribbed V-belt cover
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8. |
Unscrew crankshaft bearing bridge closure bolt (1)
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9. |
Set no.1 cylinder to TDC
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Turn crankshaft uniformly until KM-952 engages
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Mark on crankshaft belt pulley (4) must line up with lug (3) on
timing case
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10. |
Insert KM-953
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KM-953 must engage in camshaft
groove
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11. |
Lock chain tensioner
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Unscrew closure bolt (1)
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Load intake camshaft in direction of arrow via hexagonal
section using an open-ended spanner
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12. |
Remove sliding rail (1)
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13. |
Detach camshaft sprockets
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Unscrew 2 bolts (2)
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Counterhold camshafts at hexagonal section (3)
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Remove phase sensor disc
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14. |
Remove exhaust camshaft
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Remove camshaft bearing cap
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Release camshaft bearing cap working in inward spiral from
outside in steps of 1/2 to 1 turn
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Camshaft must be evenly released from the bearing seats
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15. |
Remove intake camshaft
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Remove camshaft bearing cap
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Release camshaft bearing cap working in inward spiral from
outside in steps of 1/2 to 1 turn
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Camshaft must be evenly released from the bearing seats
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Install
16. |
Inspect components
Note: If cylinder head
is to be checked and overhauled : Remove all outer attaching parts
from cylinder head.
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Camshafts, cylinder head
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17. |
Install intake camshaft
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Coat sliding surfaces with MoS2 lubricating paste
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Insert camshaft, camshaft bearing cap
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Observe installation position and allocations
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Install camshaft bearing cap
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Tighten 8 camshaft bearing cap bolts 8
Nm
Note: Tighten in stages
in a spiral from inside to outside
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18. |
Install exhaust camshaft
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Coat sliding surfaces with MoS2 lubricating paste
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Insert camshaft, camshaft bearing cap
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Observe installation position and allocations
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Install camshaft bearing cap
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Tighten 8 camshaft bearing cap bolts 8
Nm
Note: Tighten in stages
in a spiral from inside to outside
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19. |
Adjust camshafts
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Insert KM-953 (1)
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"Turn" the camshafts at hexagonal section (arrows)
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20. |
Attach camshaft sprockets
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Attach intake camshaft sprocket with phase sensor disc (2)
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Bolt in bolt
Note: It must be
possible to rotate phase sensor disk by hand
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Attach exhaust camshaft sprocket
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22. |
Remove KM-955-1
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Tighten chain tensioner closure bolt 50
Nm
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23. |
Attach KM-954
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Rotate phase sensor disk (2) until KM-954 (1) can be attached to timing case
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24. |
Fasten camshaft sprockets
Note: Tightening torque
of 10 Nm is used to secure the
camshaft sprockets and the phase sensor disk
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Tighten 2 bolts (2) 10 Nm
Note: First tighten
intake camshaft sprocket bolt
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Counterhold camshafts at hexagonal section (1)
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25. |
Remove retaining tools
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KM-952 , KM-953 , KM-954
Note: Retaining tools
must not be used for counterholding
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26. |
Fasten camshaft sprockets
Note: Second person
required
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Tighten 2 bolts 50 Nm + 60°
Note: First tighten
intake camshaft sprocket bolt
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Counterhold camshafts at hexagonal section
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28. |
Remove retaining tools
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KM-952 , KM-953 , KM-954
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29. |
Attach closure bolt of crankshaft bearing bridge
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30. |
Install ribbed V-belt cover
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32. |
Attach cylinder head cover (1)
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Renew gasket (2) and seal rings
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Apply sealant (dimension I = 2 mm)
Note: Complete assembly
operations within 10 minutes
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33. |
Attach 2 engine vent hoses
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34. |
Attach ignition module
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Attach ignition module cover
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35. |
Install engine management wiring harness
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Connect 4 wiring harness plugs
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36. |
Install air cleaner housing
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For Z 12 XEP, Z 14 XEP: attach air intake hose
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Attach engine vent hose
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Clip in tank vent valve
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Connect 2 wiring harness plugs
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