Part 2
WM 1001Z2 Assembling engine
Information
A data matrix coding is shown on the staking dihedron of the camshafts. This is a square black/white dotted marking used for electronic identification purposes during the production process. This marking can be used as an aid when inserting the camshafts into the cylinder head. All four camshafts press against the valves the least when the data matrix coding is facing upwards during installation.
35. Insert camshafts so that the minimum amount of pressure is exerted on the valve springs and coat bearing locations with normal multipurpose grease or engine oil. Position bearing covers correctly and screw down. The housings are numbered and marked with E (intake) or A (outlet). Fit camshaft bearing covers evenly and gradually, and slowly tighten to the specified tightening torque. The camshafts must not be strained or tilted. Outlet camshafts and intake camshafts (also bank-specific) cannot be used interchangeably because of the bearing locations and length.
Camshaft identification on V8 turbo engine
Camshaft bearing cover identification
Camshaft mount, cylinders 5 to 8
36. Move both hydraulic valves for camshaft control into installation position and fit them. -3 and 4-
Camshaft adjustment
37. Fit threaded peg for tensioning and guide rails if necessary. -1 and 2-
Timing chain and chain guide
38. Fit guide rail with tensioning rail for oil pump chain and pull locking pin (tensioning rail will be released).
39. Fit U-shaped deflection rail -4-.
Timing chain and sprockets
40. Fit tensioning rail and let it hang.
41. Fit both small guide rail pieces between the camshaft controller and sprocket (if removed).
42. Loosely fit camshaft controller and sprockets using screws.
43. Position timing chain and guide correctly over guide and tensioning rails.
44. Fit timing-case cover. Secure sheetmetal holder for tank vent to the upper screw on the timing-case cover at the 1st cylinder. -> 153319 Removing and installing timing-case cover Service and Repair; chain tensioner is still removed.
45. Replace and fit joint flange (sealing ring) between the vibration damper and timing-case cover. -> 137419 Removing and installing crankshaft sealing ring for pulley/vibration balancer Service and Repair
46. Turn the engine around. Oil pump is upright.
47. Lay sealing ring in the lower part of the crankcase.
48. Apply sealant to the oil guide housing as specified. Sealant should be applied thinly and evenly. Screw down within 5 minutes.
Applying sealant to oil guide housing
49. Position oil guide housing and align against transmission or projection of lower part of the crankcase. On the transmission side, the oil guide housing must not project further than the crankcase. Make sure that the transmission can later be screwed evenly to the block. The oil guide housing can be adjusted in the same way as the timing-case cover (using dial gauge, etc.). For details, see -> 175019 Removing and installing oil guide housing 175019 Removing and installing oil guide housing
50. Screw down oil guide housing. Tighten all screws uniformly in diagonally opposite sequence -4-. Don't forget the screws between the oil guide housing and timing-case cover (five screws behind front vibration balancer, bores are currently overhead). -7-
Oil guide housing with accessories
51. Equip intake manifold oil strainer with sealing ring and then fit it. Tighten all oil pipes.
Oil lines on turbo engine
Oil lines, intake pipe on turbo engine
52. Push joint flange of the oil pressure control valve through the side opening in the housing via the oil pressure control valve and secure using two screws -2 and 3-.
53. Fit oil level sensor (turn carefully when inserting sensor). -5 and 6-
54. Fit lower oil pan and tighten evenly crosswise (the inserted seal can be reused provided it does not leak and is not damaged). Insert and fit oil drain plug with new sealing ring.
Oil pan
55. Turn the engine around.
56. Position vibration balancer with screw tightened by hand.
57. Set the timing. Follow procedure exactly. -> 150516 Setting timing for camshafts Procedures
WARNING
Risk of damage to the engine and danger of crushing if the engine tips over
- When removing and installing the vibration damper with the engine removed (engine on assembly support), excessive use of force can cause the assembly mounting to become kinked.
-> The engine must be supported at the oil pan or engine carrier using suitable lifting equipment and a wide wooden block. This applies to all engines and assembly mountings.
58. Tighten vibration balancer -3 and 4- to the specified torque (use a brace brace 9679/1 ). Make a mark between the screw and the vibration balancer using a water-resistant marker (continuous line from screw to vibration balancer). Mark a second line on the vibration balancer at 180° from the first marking. Tighten from first marking to the second marking (torque-angle tightening). For details, see -> 137619 Removing and installing pulley (vibration balancer) Service and Repair
Supporting engine (illustration shows V8 engine supported on assembly support)
Pulleys
59. Fit high-pressure pump at cylinder head for cylinders 5 to 8. For details, see -> 246319 Removing and installing high-pressure pump 246319 Removing and installing high-pressure pump
60. Move vacuum pump at cylinder head for cylinders 1 to 4 into installation position and fit it. -> 477619 Removing and installing vacuum pump Service and Repair
