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All Valve Stem Seals, Replace (Cylinder Head Installed) > < All Valve Stem Seals, Replace (Cylinder Head Installed)

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Replace all valve stem seals (cylinder head installed)

  Remove

1.   Remove hydraulic valve lifter
•   See operation "Camshafts, Remove and Install"
2.   Remove spark plugs
•   See operation "Spark Plugs, Remove and Install"
3.   Make alignment mark
•   On crankshaft belt pulley (arrow)
Note:   180° offset in respect of the marking, ignition TDC cylinder no. 1
Object Number: 2410503 Size: DEFAULT


4.   Prepare automated valve spring lever MKM-6086
•   Adjust supports MKM-6086-6 (2)
– Adjust support heads (1) centrally in respect of the support feet (2) and tighten
•   Complete lever arm MKM-6086-7
– With joint MKM-6086-8 and removal head MKM-6086-10
5.   Complete assembly kit MKM-6086-200
•   Insert thrust piece MKM-6086-200-10 (3)
Note:   Note manufacturer's provisions
Object Number: 2411369 Size: DEFAULT


6.   Attach automatic valve spring lever MKM-6086
•   Attach supports MKM-6086-6 (1)
– Push assembly shaft into supports
Note:   Align assembly shaft so that it is centred over spark plug bore
– Tighten 4 bolts
•   Install lever arm MKM-6086-7 (2)
Note:   Removal head must point towards intake side
•   Secure installation shaft
– Tighten 2 bolts
7.   Install compressed air adapter
•   Screw into spark plug thread, cylinder no. 1
•   Apply compressed air to cylinder no. 1
Object Number: 2410443 Size: DEFAULT


8.   Remove intake valve springs on cylinder no. 1
•   2 off
•   Carefully push valve springs downwards
– With lever arm (1)
Note:   Removal head (2) must stand vertically above valve stem
Important:   Observe correct assignment
•   Remove valve cotters, valve heads, valve springs
Note:   Do not use magnetic tools
Object Number: 2410449 Size: DEFAULT


9.   Replace valve stem seals
•   2 off
•   Remove with KM-840
•   Place new valve stem seal on valve stem
•   Drive in as far as the stop with KM-958
Object Number: 2410450 Size: DEFAULT


10.   Install intake valve springs on cylinder no. 1
•   Insert valve springs and valve heads
•   Insert valve cotters into assembly head (1)
– Slide plastic clamping sleeve (2) in direction of lever arm mount
Important:   Insert valve cotters with tapered end towards valve
– Insert valve cotters
– Slide plastic clamping sleeve in direction of valve (arrow)
Object Number: 2410505 Size: DEFAULT


11.   Install valve cotters
•   Attach assembly head (1) to lever arm
Important:   Assembly head must stand vertically above valve stem. Valve cotters (2) must engage audibly
•   Carefully push valve springs downwards with lever arm (arrow)
Important:   Do not make a 2nd attempt without checking that both valve cotters are seated in the assembly head. Check seat of valve cotters. Ensure that compressed air is being applied.
•  
Object Number: 2410506 Size: DEFAULT


12.   Transfer lever arm
•   Remove lever arm
•   Detach assembly head
•   Attach removal head
•   Install lever arm
Note:   Removal head must point towards exhaust side
13.   Remove exhaust valve springs on cylinder no. 1
•   2 off
•   Carefully push valve springs downwards with lever arm
Note:   Removal head must stand vertical above valve stem
Important:   Observe correct assignment
•   Remove valve cotters, valve heads, valve springs
Note:   Do not use magnetic tools
14.   Replace valve stem seals
•   2 off
•   Remove with KM-840
•   Place new valve stem seal on valve stem
•   Drive in as far as the stop with KM-958
15.   Install exhaust valve springs on cylinder no. 1
•   Insert valve springs and valve heads
•   Insert valve cotters into assembly head (1)
– Slide plastic clamping sleeve (2) in direction of lever arm mount
Important:   Insert valve cotters with tapered end towards valve
– Insert valve cotters
– Slide plastic clamping sleeve in direction of valve (arrow)
16.   Install valve cotters
•   Attach assembly head (1) to lever arm
Important:   Assembly head must stand vertically above valve stem. Valve cotters (2) must engage audibly
•   Carefully push valve springs downwards with lever arm (arrow)
Note:   Do not make a 2nd attempt without checking that both valve cotters are seated in the assembly head. Check seat of valve cotters. Ensure that compressed air is being applied.
17.   Transfer compressed air adapter
•   Interrupt compressed air feed
•   Unscrew from spark plug thread, cylinder no. 1
•   Screw into spark plug thread, cylinder no. 4
•   Apply compressed air to cylinder no. 4
18.   Transfer lever arm
•   Remove lever arm
•   Detach assembly head
•   Attach removal head
•   Install lever arm
19.   Replace valve stem seals, cylinder no. 4
•   4 off
20.   Interrupt compressed air feed
21.   Remove crankshaft lock KM-952
22.   Adjust ignition TDC of cylinder no. 3
•   Pull timing chain upwards
•   Turn crankshaft evenly (180°)
Note:   The mark on the crankshaft belt pulley must align with the lug on the timing case.
23.   Lock crankshaft
•   Using KM-952
24.   Transfer compressed air adapter
•   Interrupt compressed air feed
•   Unscrew from spark plug thread, cylinder no. 4
•   Screw into spark plug thread, cylinder no. 2
•   Apply compressed air to cylinder no. 2
25.   Replace valve stem seals, cylinder no. 2
•   4 off
26.   Transfer compressed air adapter
•   Interrupt compressed air feed
•   Unscrew from spark plug thread, cylinder no. 2
•   Screw into spark plug thread, cylinder no. 3
•   Apply compressed air to cylinder no. 3
27.   Replace valve stem seals, cylinder no. 3
•   4 off
28.   Interrupt compressed air feed
29.   Detach automatic valve spring lever
30.   Remove compressed air adapter
31.   Release crankshaft
32.   Raise vehicle
33.   Lock crankshaft
•   Pull timing chain upwards
•   Turn crankshaft evenly until KM-952 engages
•   Insert KM-952
34.   Lower vehicle

  Install

35.   Install spark plugs
•   See operation "Spark Plugs, Remove and Install"
36.   Visually check components
•   Camshafts, camshaft bearing cap, cylinder head, roller cam follower, hydraulic valve lifter
37.   Install hydraulic valve lifter, roller cam follower and camshafts
•   See operation "Camshafts, Remove and Install"
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All Valve Stem Seals, Replace (Cylinder Head Installed) > < All Valve Stem Seals, Replace (Cylinder Head Installed)